diff options
author | Wolfgang Denk <wd@pollux.denx.de> | 2006-10-24 15:17:18 +0200 |
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committer | Wolfgang Denk <wd@pollux.denx.de> | 2006-10-24 15:17:18 +0200 |
commit | 9748d5a9e8aa8bf6dd576e70894b9996c22f7003 (patch) | |
tree | bfbdfb6f1ef9d24389e19a3b47ecdc7a883af455 /cpu/at32ap | |
parent | 8318fbf8cc30418b621ea9f39b84b4c1a08f003a (diff) | |
parent | 3a78e3e75b633ecb6413114ffd11e2f000c4f11e (diff) | |
download | u-boot-imx-9748d5a9e8aa8bf6dd576e70894b9996c22f7003.zip u-boot-imx-9748d5a9e8aa8bf6dd576e70894b9996c22f7003.tar.gz u-boot-imx-9748d5a9e8aa8bf6dd576e70894b9996c22f7003.tar.bz2 |
Merge with /home/wd/git/u-boot/mailing-list/Haavard_Skinnemoen
Diffstat (limited to 'cpu/at32ap')
-rw-r--r-- | cpu/at32ap/Makefile | 50 | ||||
-rw-r--r-- | cpu/at32ap/at32ap7000/Makefile | 43 | ||||
-rw-r--r-- | cpu/at32ap/at32ap7000/devices.c | 448 | ||||
-rw-r--r-- | cpu/at32ap/at32ap7000/hebi.c | 38 | ||||
-rw-r--r-- | cpu/at32ap/cache.c | 97 | ||||
-rw-r--r-- | cpu/at32ap/config.mk | 22 | ||||
-rw-r--r-- | cpu/at32ap/cpu.c | 83 | ||||
-rw-r--r-- | cpu/at32ap/device.c | 126 | ||||
-rw-r--r-- | cpu/at32ap/entry.S | 65 | ||||
-rw-r--r-- | cpu/at32ap/exception.c | 119 | ||||
-rw-r--r-- | cpu/at32ap/hsdramc.c | 155 | ||||
-rw-r--r-- | cpu/at32ap/hsdramc1.h | 143 | ||||
-rw-r--r-- | cpu/at32ap/hsmc3.h | 126 | ||||
-rw-r--r-- | cpu/at32ap/interrupts.c | 154 | ||||
-rw-r--r-- | cpu/at32ap/pio.c | 94 | ||||
-rw-r--r-- | cpu/at32ap/pio2.h | 44 | ||||
-rw-r--r-- | cpu/at32ap/pm.c | 163 | ||||
-rw-r--r-- | cpu/at32ap/sm.h | 204 | ||||
-rw-r--r-- | cpu/at32ap/start.S | 113 |
19 files changed, 2287 insertions, 0 deletions
diff --git a/cpu/at32ap/Makefile b/cpu/at32ap/Makefile new file mode 100644 index 0000000..8ce79e9 --- /dev/null +++ b/cpu/at32ap/Makefile @@ -0,0 +1,50 @@ +# +# (C) Copyright 2000-2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# Copyright (C) 2005-2006 Atmel Corporation. +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +include $(TOPDIR)/config.mk + +LIB := $(obj)lib$(CPU).a + +START := start.o +SOBJS := entry.o +COBJS := cpu.o hsdramc.o exception.o cache.o +COBJS += interrupts.o device.o pm.o pio.o +SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) +START := $(addprefix $(obj),$(START)) + +all: $(obj).depend $(START) $(LIB) + +$(LIB): $(OBJS) + $(AR) crv $@ $^ + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/cpu/at32ap/at32ap7000/Makefile b/cpu/at32ap/at32ap7000/Makefile new file mode 100644 index 0000000..1cd9444 --- /dev/null +++ b/cpu/at32ap/at32ap7000/Makefile @@ -0,0 +1,43 @@ +# +# Copyright (C) 2005-2006 Atmel Corporation +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +include $(TOPDIR)/config.mk + +LIB := $(obj)lib$(SOC).a + +COBJS := hebi.o devices.o +SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) + +all: $(obj).depend $(LIB) + +$(LIB): $(OBJS) + $(AR) crv $@ $^ + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/cpu/at32ap/at32ap7000/devices.c b/cpu/at32ap/at32ap7000/devices.c new file mode 100644 index 0000000..8b216e9 --- /dev/null +++ b/cpu/at32ap/at32ap7000/devices.c @@ -0,0 +1,448 @@ +/* + * Copyright (C) 2006 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <common.h> + +#include <asm/arch/memory-map.h> +#include <asm/arch/platform.h> + +#include "../sm.h" + +#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) + +const struct clock_domain chip_clock[] = { + [CLOCK_CPU] = { + .reg = SM_PM_CPU_MASK, + .id = CLOCK_CPU, + .bridge = NO_DEVICE, + }, + [CLOCK_HSB] = { + .reg = SM_PM_HSB_MASK, + .id = CLOCK_HSB, + .bridge = NO_DEVICE, + }, + [CLOCK_PBA] = { + .reg = SM_PM_PBA_MASK, + .id = CLOCK_PBA, + .bridge = DEVICE_PBA_BRIDGE, + }, + [CLOCK_PBB] = { + .reg = SM_PM_PBB_MASK, + .id = CLOCK_PBB, + .bridge = DEVICE_PBB_BRIDGE, + }, +}; + +static const struct resource hebi_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_HSB, 0 }, + }, + }, { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBB, 13 }, + }, + }, { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBB, 14 }, + }, + }, { + .type = RESOURCE_GPIO, + .u = { + .gpio = { 27, DEVICE_PIOE, GPIO_FUNC_A, 0 }, + }, + }, +}; +static const struct resource pba_bridge_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_HSB, 1 }, + } + }, { + .type = RESOURCE_CLOCK, + .u = { + /* HSB-HSB Bridge */ + .clock = { CLOCK_HSB, 4 }, + }, + }, +}; +static const struct resource pbb_bridge_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_HSB, 2 }, + }, + }, +}; +static const struct resource hramc_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_HSB, 3 }, + }, + }, +}; +static const struct resource pioa_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBA, 10 }, + }, + }, +}; +static const struct resource piob_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBA, 11 }, + }, + }, +}; +static const struct resource pioc_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBA, 12 }, + }, + }, +}; +static const struct resource piod_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBA, 13 }, + }, + }, +}; +static const struct resource pioe_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBA, 14 }, + }, + }, +}; +static const struct resource sm_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBB, 0 }, + }, + }, +}; +static const struct resource intc_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBB, 1 }, + }, + }, +}; +static const struct resource hmatrix_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBB, 2 }, + }, + }, +}; +#if defined(CFG_HPDC) +static const struct resource hpdc_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBA, 16 }, + }, + }, +}; +#endif +#if defined(CFG_MACB0) +static const struct resource macb0_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_HSB, 8 }, + }, + }, { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBB, 6 }, + }, + }, { + .type = RESOURCE_GPIO, + .u = { + .gpio = { 19, DEVICE_PIOC, GPIO_FUNC_A, 0 }, + }, + }, +}; +#endif +#if defined(CFG_MACB1) +static const struct resource macb1_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_HSB, 9 }, + }, + }, { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBB, 7 }, + }, + }, { + .type = RESOURCE_GPIO, + .u = { + .gpio = { 12, DEVICE_PIOC, GPIO_FUNC_B, 19 }, + }, + }, { + .type = RESOURCE_GPIO, + .u = { + .gpio = { 14, DEVICE_PIOD, GPIO_FUNC_B, 2 }, + }, + }, +}; +#endif +#if defined(CFG_LCDC) +static const struct resource lcdc_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_HSB, 7 }, + }, + }, +}; +#endif +#if defined(CFG_USART0) +static const struct resource usart0_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBA, 3 }, + }, + }, { + .type = RESOURCE_GPIO, + .u = { + .gpio = { 2, DEVICE_PIOA, GPIO_FUNC_B, 8 }, + }, + }, +}; +#endif +#if defined(CFG_USART1) +static const struct resource usart1_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBA, 4 }, + }, + }, { + .type = RESOURCE_GPIO, + .u = { + .gpio = { 2, DEVICE_PIOA, GPIO_FUNC_A, 17 }, + }, + }, +}; +#endif +#if defined(CFG_USART2) +static const struct resource usart2_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBA, 5 }, + }, + }, { + .type = RESOURCE_GPIO, + .u = { + .gpio = { 2, DEVICE_PIOB, GPIO_FUNC_B, 26 }, + }, + }, +}; +#endif +#if defined(CFG_USART3) +static const struct resource usart3_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBA, 6 }, + }, + }, { + .type = RESOURCE_GPIO, + .u = { + .gpio = { 2, DEVICE_PIOB, GPIO_FUNC_B, 17 }, + }, + }, +}; +#endif +#if defined(CFG_MMCI) +static const struct resource mmci_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_PBB, 9 }, + }, + }, { + .type = RESOURCE_GPIO, + .u = { + .gpio = { 6, DEVICE_PIOA, GPIO_FUNC_A, 10 }, + }, + }, +}; +#endif +#if defined(CFG_DMAC) +static const struct resource dmac_resource[] = { + { + .type = RESOURCE_CLOCK, + .u = { + .clock = { CLOCK_HSB, 10 }, + }, + }, +}; +#endif + +const struct device chip_device[] = { + [DEVICE_HEBI] = { + .regs = (void *)HSMC_BASE, + .nr_resources = ARRAY_SIZE(hebi_resource), + .resource = hebi_resource, + }, + [DEVICE_PBA_BRIDGE] = { + .nr_resources = ARRAY_SIZE(pba_bridge_resource), + .resource = pba_bridge_resource, + }, + [DEVICE_PBB_BRIDGE] = { + .nr_resources = ARRAY_SIZE(pbb_bridge_resource), + .resource = pbb_bridge_resource, + }, + [DEVICE_HRAMC] = { + .nr_resources = ARRAY_SIZE(hramc_resource), + .resource = hramc_resource, + }, + [DEVICE_PIOA] = { + .regs = (void *)PIOA_BASE, + .nr_resources = ARRAY_SIZE(pioa_resource), + .resource = pioa_resource, + }, + [DEVICE_PIOB] = { + .regs = (void *)PIOB_BASE, + .nr_resources = ARRAY_SIZE(piob_resource), + .resource = piob_resource, + }, + [DEVICE_PIOC] = { + .regs = (void *)PIOC_BASE, + .nr_resources = ARRAY_SIZE(pioc_resource), + .resource = pioc_resource, + }, + [DEVICE_PIOD] = { + .regs = (void *)PIOD_BASE, + .nr_resources = ARRAY_SIZE(piod_resource), + .resource = piod_resource, + }, + [DEVICE_PIOE] = { + .regs = (void *)PIOE_BASE, + .nr_resources = ARRAY_SIZE(pioe_resource), + .resource = pioe_resource, + }, + [DEVICE_SM] = { + .regs = (void *)SM_BASE, + .nr_resources = ARRAY_SIZE(sm_resource), + .resource = sm_resource, + }, + [DEVICE_INTC] = { + .regs = (void *)INTC_BASE, + .nr_resources = ARRAY_SIZE(intc_resource), + .resource = intc_resource, + }, + [DEVICE_HMATRIX] = { + .regs = (void *)HMATRIX_BASE, + .nr_resources = ARRAY_SIZE(hmatrix_resource), + .resource = hmatrix_resource, + }, +#if defined(CFG_HPDC) + [DEVICE_HPDC] = { + .nr_resources = ARRAY_SIZE(hpdc_resource), + .resource = hpdc_resource, + }, +#endif +#if defined(CFG_MACB0) + [DEVICE_MACB0] = { + .regs = (void *)MACB0_BASE, + .nr_resources = ARRAY_SIZE(macb0_resource), + .resource = macb0_resource, + }, +#endif +#if defined(CFG_MACB1) + [DEVICE_MACB1] = { + .regs = (void *)MACB1_BASE, + .nr_resources = ARRAY_SIZE(macb1_resource), + .resource = macb1_resource, + }, +#endif +#if defined(CFG_LCDC) + [DEVICE_LCDC] = { + .nr_resources = ARRAY_SIZE(lcdc_resource), + .resource = lcdc_resource, + }, +#endif +#if defined(CFG_USART0) + [DEVICE_USART0] = { + .regs = (void *)USART0_BASE, + .nr_resources = ARRAY_SIZE(usart0_resource), + .resource = usart0_resource, + }, +#endif +#if defined(CFG_USART1) + [DEVICE_USART1] = { + .regs = (void *)USART1_BASE, + .nr_resources = ARRAY_SIZE(usart1_resource), + .resource = usart1_resource, + }, +#endif +#if defined(CFG_USART2) + [DEVICE_USART2] = { + .regs = (void *)USART2_BASE, + .nr_resources = ARRAY_SIZE(usart2_resource), + .resource = usart2_resource, + }, +#endif +#if defined(CFG_USART3) + [DEVICE_USART3] = { + .regs = (void *)USART3_BASE, + .nr_resources = ARRAY_SIZE(usart3_resource), + .resource = usart3_resource, + }, +#endif +#if defined(CFG_MMCI) + [DEVICE_MMCI] = { + .regs = (void *)MMCI_BASE, + .nr_resources = ARRAY_SIZE(mmci_resource), + .resource = mmci_resource, + }, +#endif +#if defined(CFG_DMAC) + [DEVICE_DMAC] = { + .regs = (void *)DMAC_BASE, + .nr_resources = ARRAY_SIZE(dmac_resource), + .resource = dmac_resource, + }, +#endif +}; diff --git a/cpu/at32ap/at32ap7000/hebi.c b/cpu/at32ap/at32ap7000/hebi.c new file mode 100644 index 0000000..3b32adf --- /dev/null +++ b/cpu/at32ap/at32ap7000/hebi.c @@ -0,0 +1,38 @@ +/* + * Copyright (C) 2006 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <common.h> + +#include <asm/io.h> + +#include <asm/arch/hmatrix2.h> +#include <asm/arch/memory-map.h> +#include <asm/arch/platform.h> + +void cpu_enable_sdram(void) +{ + const struct device *hmatrix; + + hmatrix = get_device(DEVICE_HMATRIX); + + /* Set the SDRAM_ENABLE bit in the HEBI SFR */ + hmatrix2_writel(hmatrix, SFR4, 1 << 1); +} diff --git a/cpu/at32ap/cache.c b/cpu/at32ap/cache.c new file mode 100644 index 0000000..41fb5aa --- /dev/null +++ b/cpu/at32ap/cache.c @@ -0,0 +1,97 @@ +/* + * Copyright (C) 2004-2006 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> + +#include <asm/cacheflush.h> + +void dcache_clean_range(volatile void *start, size_t size) +{ + unsigned long v, begin, end, linesz; + + linesz = CFG_DCACHE_LINESZ; + + /* You asked for it, you got it */ + begin = (unsigned long)start & ~(linesz - 1); + end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1); + + for (v = begin; v < end; v += linesz) + dcache_clean_line((void *)v); + + sync_write_buffer(); +} + +void dcache_invalidate_range(volatile void *start, size_t size) +{ + unsigned long v, begin, end, linesz; + + linesz = CFG_DCACHE_LINESZ; + + /* You asked for it, you got it */ + begin = (unsigned long)start & ~(linesz - 1); + end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1); + + for (v = begin; v < end; v += linesz) + dcache_invalidate_line((void *)v); +} + +void dcache_flush_range(volatile void *start, size_t size) +{ + unsigned long v, begin, end, linesz; + + linesz = CFG_DCACHE_LINESZ; + + /* You asked for it, you got it */ + begin = (unsigned long)start & ~(linesz - 1); + end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1); + + for (v = begin; v < end; v += linesz) + dcache_flush_line((void *)v); + + sync_write_buffer(); +} + +void icache_invalidate_range(volatile void *start, size_t size) +{ + unsigned long v, begin, end, linesz; + + linesz = CFG_ICACHE_LINESZ; + + /* You asked for it, you got it */ + begin = (unsigned long)start & ~(linesz - 1); + end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1); + + for (v = begin; v < end; v += linesz) + icache_invalidate_line((void *)v); +} + +/* + * This is called after loading something into memory. We need to + * make sure that everything that was loaded is actually written to + * RAM, and that the icache will look for it. Cleaning the dcache and + * invalidating the icache will do the trick. + */ +void flush_cache (unsigned long start_addr, unsigned long size) +{ + dcache_clean_range((void *)start_addr, size); + icache_invalidate_range((void *)start_addr, size); +} diff --git a/cpu/at32ap/config.mk b/cpu/at32ap/config.mk new file mode 100644 index 0000000..1c12169 --- /dev/null +++ b/cpu/at32ap/config.mk @@ -0,0 +1,22 @@ +# +# Copyright (C) 2005-2006 Atmel Corporation +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# +PLATFORM_RELFLAGS += -mcpu=ap7000 diff --git a/cpu/at32ap/cpu.c b/cpu/at32ap/cpu.c new file mode 100644 index 0000000..37e3ea0 --- /dev/null +++ b/cpu/at32ap/cpu.c @@ -0,0 +1,83 @@ +/* + * Copyright (C) 2005-2006 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <common.h> +#include <command.h> + +#include <asm/io.h> +#include <asm/sections.h> +#include <asm/sysreg.h> + +#include <asm/arch/memory-map.h> +#include <asm/arch/platform.h> + +#include "hsmc3.h" + +DECLARE_GLOBAL_DATA_PTR; + +int cpu_init(void) +{ + const struct device *hebi; + extern void _evba(void); + char *p; + + gd->cpu_hz = CFG_OSC0_HZ; + + /* fff03400: 00010001 04030402 00050005 10011103 */ + hebi = get_device(DEVICE_HEBI); + hsmc3_writel(hebi, MODE0, 0x00031103); + hsmc3_writel(hebi, CYCLE0, 0x000c000d); + hsmc3_writel(hebi, PULSE0, 0x0b0a0906); + hsmc3_writel(hebi, SETUP0, 0x00010002); + + pm_init(); + + sysreg_write(EVBA, (unsigned long)&_evba); + asm volatile("csrf %0" : : "i"(SYSREG_EM_OFFSET)); + gd->console_uart = get_device(CFG_CONSOLE_UART_DEV); + + /* Lock everything that mess with the flash in the icache */ + for (p = __flashprog_start; p <= (__flashprog_end + CFG_ICACHE_LINESZ); + p += CFG_ICACHE_LINESZ) + asm volatile("cache %0, 0x02" : "=m"(*p) :: "memory"); + + return 0; +} + +void prepare_to_boot(void) +{ + /* Flush both caches and the write buffer */ + asm volatile("cache %0[4], 010\n\t" + "cache %0[0], 000\n\t" + "sync 0" : : "r"(0) : "memory"); +} + +int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + /* This will reset the CPU core, caches, MMU and all internal busses */ + __builtin_mtdr(8, 1 << 13); /* set DC:DBE */ + __builtin_mtdr(8, 1 << 30); /* set DC:RES */ + + /* Flush the pipeline before we declare it a failure */ + asm volatile("sub pc, pc, -4"); + + return -1; +} diff --git a/cpu/at32ap/device.c b/cpu/at32ap/device.c new file mode 100644 index 0000000..89914b6 --- /dev/null +++ b/cpu/at32ap/device.c @@ -0,0 +1,126 @@ +/* + * Copyright (C) 2006 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <common.h> + +#include <asm/arch/platform.h> + +#include "sm.h" + +struct device_state { + int refcount; +}; + +static struct device_state device_state[NR_DEVICES]; + +static int claim_resource(const struct resource *res) +{ + int ret = 0; + + switch (res->type) { + case RESOURCE_GPIO: + ret = gpio_set_func(res->u.gpio.gpio_dev, + res->u.gpio.start, + res->u.gpio.nr_pins, + res->u.gpio.func); + break; + case RESOURCE_CLOCK: + ret = pm_enable_clock(res->u.clock.id, res->u.clock.index); + break; + } + + return ret; +} + +static void free_resource(const struct resource *res) +{ + switch (res->type) { + case RESOURCE_GPIO: + gpio_free(res->u.gpio.gpio_dev, res->u.gpio.start, + res->u.gpio.nr_pins); + break; + case RESOURCE_CLOCK: + pm_disable_clock(res->u.clock.id, res->u.clock.index); + break; + } +} + +static int init_dev(const struct device *dev) +{ + unsigned int i; + int ret = 0; + + for (i = 0; i < dev->nr_resources; i++) { + ret = claim_resource(&dev->resource[i]); + if (ret) + goto cleanup; + } + + return 0; + +cleanup: + while (i--) + free_resource(&dev->resource[i]); + + return ret; +} + +const struct device *get_device(enum device_id devid) +{ + struct device_state *devstate; + const struct device *dev; + unsigned long flags; + int initialized = 0; + int ret = 0; + + devstate = &device_state[devid]; + dev = &chip_device[devid]; + + flags = disable_interrupts(); + if (devstate->refcount++) + initialized = 1; + if (flags) + enable_interrupts(); + + if (!initialized) + ret = init_dev(dev); + + return ret ? NULL : dev; +} + +void put_device(const struct device *dev) +{ + struct device_state *devstate; + unsigned long devid, flags; + + devid = (unsigned long)(dev - chip_device) / sizeof(struct device); + devstate = &device_state[devid]; + + flags = disable_interrupts(); + devstate--; + if (!devstate) { + unsigned int i; + for (i = 0; i < dev->nr_resources; i++) + free_resource(&dev->resource[i]); + } + if (flags) + enable_interrupts(); +} diff --git a/cpu/at32ap/entry.S b/cpu/at32ap/entry.S new file mode 100644 index 0000000..b52d798 --- /dev/null +++ b/cpu/at32ap/entry.S @@ -0,0 +1,65 @@ +/* + * Copyright (C) 2004-2006 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <asm/sysreg.h> +#include <asm/ptrace.h> + + .section .text.exception,"ax" + .global _evba + .type _evba,@function + .align 10 +_evba: + .irp x,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 + .align 2 + rjmp unknown_exception + .endr + + .global timer_interrupt_handler + .type timer_interrupt_handler,@function + .align 2 +timer_interrupt_handler: + /* + * Increment timer_overflow and re-write COMPARE with 0xffffffff. + * + * We're running at interrupt level 3, so we don't need to save + * r8-r12 or lr to the stack. + */ + mov r8, lo(timer_overflow) + orh r8, hi(timer_overflow) + ld.w r9, r8[0] + mov r10, -1 + mtsr SYSREG_COMPARE, r10 + sub r9, -1 + st.w r8[0], r9 + rete + + .type unknown_exception, @function +unknown_exception: + pushm r0-r12 + sub r8, sp, REG_R12 - REG_R0 - 4 + mov r9, lr + mfsr r10, SYSREG_RAR_EX + mfsr r11, SYSREG_RSR_EX + pushm r8-r11 + mfsr r12, SYSREG_ECR + mov r11, sp + rcall do_unknown_exception +1: rjmp 1b diff --git a/cpu/at32ap/exception.c b/cpu/at32ap/exception.c new file mode 100644 index 0000000..4123c44 --- /dev/null +++ b/cpu/at32ap/exception.c @@ -0,0 +1,119 @@ +/* + * Copyright (C) 2005-2006 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <common.h> + +#include <asm/sysreg.h> +#include <asm/ptrace.h> + +static const char * const cpu_modes[8] = { + "Application", "Supervisor", "Interrupt level 0", "Interrupt level 1", + "Interrupt level 2", "Interrupt level 3", "Exception", "NMI" +}; + +static void dump_mem(const char *str, unsigned long bottom, unsigned long top) +{ + unsigned long p; + int i; + + printf("%s(0x%08lx to 0x%08lx)\n", str, bottom, top); + + for (p = bottom & ~31; p < top; ) { + printf("%04lx: ", p & 0xffff); + + for (i = 0; i < 8; i++, p += 4) { + unsigned int val; + + if (p < bottom || p >= top) + printf(" "); + else { + val = *(unsigned long *)p; + printf("%08x ", val); + } + } + printf("\n"); + } +} + +void do_unknown_exception(unsigned int ecr, struct pt_regs *regs) +{ + unsigned int mode; + + printf("\n *** Unhandled exception %u at PC=0x%08lx\n", ecr, regs->pc); + + switch (ecr) { + case ECR_BUS_ERROR_WRITE: + case ECR_BUS_ERROR_READ: + printf("Bus error at address 0x%08lx\n", + sysreg_read(BEAR)); + break; + case ECR_TLB_MULTIPLE: + case ECR_ADDR_ALIGN_X: + case ECR_PROTECTION_X: + case ECR_ADDR_ALIGN_R: + case ECR_ADDR_ALIGN_W: + case ECR_PROTECTION_R: + case ECR_PROTECTION_W: + case ECR_DTLB_MODIFIED: + case ECR_TLB_MISS_X: + case ECR_TLB_MISS_R: + case ECR_TLB_MISS_W: + printf("MMU exception at address 0x%08lx\n", + sysreg_read(TLBEAR)); + break; + } + + printf(" pc: %08lx lr: %08lx sp: %08lx r12: %08lx\n", + regs->pc, regs->lr, regs->sp, regs->r12); + printf(" r11: %08lx r10: %08lx r9: %08lx r8: %08lx\n", + regs->r11, regs->r10, regs->r9, regs->r8); + printf(" r7: %08lx r6: %08lx r5: %08lx r4: %08lx\n", + regs->r7, regs->r6, regs->r5, regs->r4); + printf(" r3: %08lx r2: %08lx r1: %08lx r0: %08lx\n", + regs->r3, regs->r2, regs->r1, regs->r0); + printf("Flags: %c%c%c%c%c\n", + regs->sr & SR_Q ? 'Q' : 'q', + regs->sr & SR_V ? 'V' : 'v', + regs->sr & SR_N ? 'N' : 'n', + regs->sr & SR_Z ? 'Z' : 'z', + regs->sr & SR_C ? 'C' : 'c'); + printf("Mode bits: %c%c%c%c%c%c%c%c%c\n", + regs->sr & SR_H ? 'H' : 'h', + regs->sr & SR_R ? 'R' : 'r', + regs->sr & SR_J ? 'J' : 'j', + regs->sr & SR_EM ? 'E' : 'e', + regs->sr & SR_I3M ? '3' : '.', + regs->sr & SR_I2M ? '2' : '.', + regs->sr & SR_I1M ? '1' : '.', + regs->sr & SR_I0M ? '0' : '.', + regs->sr & SR_GM ? 'G' : 'g'); + mode = (regs->sr >> SYSREG_M0_OFFSET) & 7; + printf("CPU Mode: %s\n", cpu_modes[mode]); + + /* Avoid exception loops */ + if (regs->sp >= CFG_INIT_SP_ADDR + || regs->sp < (CFG_INIT_SP_ADDR - CONFIG_STACKSIZE)) + printf("\nStack pointer seems bogus, won't do stack dump\n"); + else + dump_mem("\nStack: ", regs->sp, CFG_INIT_SP_ADDR); + + panic("Unhandled exception\n"); +} diff --git a/cpu/at32ap/hsdramc.c b/cpu/at32ap/hsdramc.c new file mode 100644 index 0000000..f36da35 --- /dev/null +++ b/cpu/at32ap/hsdramc.c @@ -0,0 +1,155 @@ +/* + * Copyright (C) 2005-2006 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <common.h> + +#ifdef CFG_HSDRAMC +#include <asm/io.h> +#include <asm/sdram.h> + +#include <asm/arch/platform.h> + +#include "hsdramc1.h" + +struct hsdramc { + const struct device *hebi; + void *regs; +}; + +static struct hsdramc hsdramc; + +unsigned long sdram_init(const struct sdram_info *info) +{ + unsigned long *sdram = (unsigned long *)uncached(info->phys_addr); + unsigned long sdram_size; + unsigned long tmp; + unsigned long bus_hz; + unsigned int i; + + hsdramc.hebi = get_device(DEVICE_HEBI); + if (!hsdramc.hebi) + return 0; + + /* FIXME: Both of these lines are complete hacks */ + hsdramc.regs = hsdramc.hebi->regs + 0x400; + bus_hz = pm_get_clock_freq(hsdramc.hebi->resource[0].u.clock.id); + + cpu_enable_sdram(); + + tmp = (HSDRAMC1_BF(NC, info->col_bits - 8) + | HSDRAMC1_BF(NR, info->row_bits - 11) + | HSDRAMC1_BF(NB, info->bank_bits - 1) + | HSDRAMC1_BF(CAS, info->cas) + | HSDRAMC1_BF(TWR, info->twr) + | HSDRAMC1_BF(TRC, info->trc) + | HSDRAMC1_BF(TRP, info->trp) + | HSDRAMC1_BF(TRCD, info->trcd) + | HSDRAMC1_BF(TRAS, info->tras) + | HSDRAMC1_BF(TXSR, info->txsr)); + +#ifdef CFG_SDRAM_16BIT + tmp |= HSDRAMC1_BIT(DBW); + sdram_size = 1 << (info->row_bits + info->col_bits + + info->bank_bits + 1); +#else + sdram_size = 1 << (info->row_bits + info->col_bits + + info->bank_bits + 2); +#endif + + hsdramc1_writel(&hsdramc, CR, tmp); + + /* + * Initialization sequence for SDRAM, from the data sheet: + * + * 1. A minimum pause of 200 us is provided to precede any + * signal toggle. + */ + udelay(200); + + /* + * 2. A Precharge All command is issued to the SDRAM + */ + hsdramc1_writel(&hsdramc, MR, HSDRAMC1_MODE_BANKS_PRECHARGE); + hsdramc1_readl(&hsdramc, MR); + writel(0, sdram); + + /* + * 3. Eight auto-refresh (CBR) cycles are provided + */ + hsdramc1_writel(&hsdramc, MR, HSDRAMC1_MODE_AUTO_REFRESH); + hsdramc1_readl(&hsdramc, MR); + for (i = 0; i < 8; i++) + writel(0, sdram); + + /* + * 4. A mode register set (MRS) cycle is issued to program + * SDRAM parameters, in particular CAS latency and burst + * length. + * + * CAS from info struct, burst length 1, serial burst type + */ + hsdramc1_writel(&hsdramc, MR, HSDRAMC1_MODE_LOAD_MODE); + hsdramc1_readl(&hsdramc, MR); + writel(0, sdram + (info->cas << 4)); + + /* + * 5. A Normal Mode command is provided, 3 clocks after tMRD + * is met. + * + * From the timing diagram, it looks like tMRD is 3 + * cycles...try a dummy read from the peripheral bus. + */ + hsdramc1_readl(&hsdramc, MR); + hsdramc1_writel(&hsdramc, MR, HSDRAMC1_MODE_NORMAL); + hsdramc1_readl(&hsdramc, MR); + writel(0, sdram); + + /* + * 6. Write refresh rate into SDRAMC refresh timer count + * register (refresh rate = timing between refresh cycles). + * + * 15.6 us is a typical value for a burst of length one + */ + hsdramc1_writel(&hsdramc, TR, (156 * (bus_hz / 1000)) / 10000); + + printf("SDRAM: %u MB at address 0x%08lx\n", + sdram_size >> 20, info->phys_addr); + + printf("Testing SDRAM..."); + for (i = 0; i < sdram_size / 4; i++) + sdram[i] = i; + + for (i = 0; i < sdram_size / 4; i++) { + tmp = sdram[i]; + if (tmp != i) { + printf("FAILED at address 0x%08lx\n", + info->phys_addr + i * 4); + printf("SDRAM: read 0x%lx, expected 0x%lx\n", tmp, i); + return 0; + } + } + + puts("OK\n"); + + return sdram_size; +} + +#endif /* CFG_HSDRAMC */ diff --git a/cpu/at32ap/hsdramc1.h b/cpu/at32ap/hsdramc1.h new file mode 100644 index 0000000..ce229bc --- /dev/null +++ b/cpu/at32ap/hsdramc1.h @@ -0,0 +1,143 @@ +/* + * Register definitions for SDRAM Controller + */ +#ifndef __ASM_AVR32_HSDRAMC1_H__ +#define __ASM_AVR32_HSDRAMC1_H__ + +/* HSDRAMC1 register offsets */ +#define HSDRAMC1_MR 0x0000 +#define HSDRAMC1_TR 0x0004 +#define HSDRAMC1_CR 0x0008 +#define HSDRAMC1_HSR 0x000c +#define HSDRAMC1_LPR 0x0010 +#define HSDRAMC1_IER 0x0014 +#define HSDRAMC1_IDR 0x0018 +#define HSDRAMC1_IMR 0x001c +#define HSDRAMC1_ISR 0x0020 +#define HSDRAMC1_MDR 0x0024 +#define HSDRAMC1_VERSION 0x00fc + +/* Bitfields in MR */ +#define HSDRAMC1_MODE_OFFSET 0 +#define HSDRAMC1_MODE_SIZE 3 + +/* Bitfields in TR */ +#define HSDRAMC1_COUNT_OFFSET 0 +#define HSDRAMC1_COUNT_SIZE 12 + +/* Bitfields in CR */ +#define HSDRAMC1_NC_OFFSET 0 +#define HSDRAMC1_NC_SIZE 2 +#define HSDRAMC1_NR_OFFSET 2 +#define HSDRAMC1_NR_SIZE 2 +#define HSDRAMC1_NB_OFFSET 4 +#define HSDRAMC1_NB_SIZE 1 +#define HSDRAMC1_CAS_OFFSET 5 +#define HSDRAMC1_CAS_SIZE 2 +#define HSDRAMC1_DBW_OFFSET 7 +#define HSDRAMC1_DBW_SIZE 1 +#define HSDRAMC1_TWR_OFFSET 8 +#define HSDRAMC1_TWR_SIZE 4 +#define HSDRAMC1_TRC_OFFSET 12 +#define HSDRAMC1_TRC_SIZE 4 +#define HSDRAMC1_TRP_OFFSET 16 +#define HSDRAMC1_TRP_SIZE 4 +#define HSDRAMC1_TRCD_OFFSET 20 +#define HSDRAMC1_TRCD_SIZE 4 +#define HSDRAMC1_TRAS_OFFSET 24 +#define HSDRAMC1_TRAS_SIZE 4 +#define HSDRAMC1_TXSR_OFFSET 28 +#define HSDRAMC1_TXSR_SIZE 4 + +/* Bitfields in HSR */ +#define HSDRAMC1_DA_OFFSET 0 +#define HSDRAMC1_DA_SIZE 1 + +/* Bitfields in LPR */ +#define HSDRAMC1_LPCB_OFFSET 0 +#define HSDRAMC1_LPCB_SIZE 2 +#define HSDRAMC1_PASR_OFFSET 4 +#define HSDRAMC1_PASR_SIZE 3 +#define HSDRAMC1_TCSR_OFFSET 8 +#define HSDRAMC1_TCSR_SIZE 2 +#define HSDRAMC1_DS_OFFSET 10 +#define HSDRAMC1_DS_SIZE 2 +#define HSDRAMC1_TIMEOUT_OFFSET 12 +#define HSDRAMC1_TIMEOUT_SIZE 2 + +/* Bitfields in IDR */ +#define HSDRAMC1_RES_OFFSET 0 +#define HSDRAMC1_RES_SIZE 1 + +/* Bitfields in MDR */ +#define HSDRAMC1_MD_OFFSET 0 +#define HSDRAMC1_MD_SIZE 2 + +/* Bitfields in VERSION */ +#define HSDRAMC1_VERSION_OFFSET 0 +#define HSDRAMC1_VERSION_SIZE 12 +#define HSDRAMC1_MFN_OFFSET 16 +#define HSDRAMC1_MFN_SIZE 3 + +/* Constants for MODE */ +#define HSDRAMC1_MODE_NORMAL 0 +#define HSDRAMC1_MODE_NOP 1 +#define HSDRAMC1_MODE_BANKS_PRECHARGE 2 +#define HSDRAMC1_MODE_LOAD_MODE 3 +#define HSDRAMC1_MODE_AUTO_REFRESH 4 +#define HSDRAMC1_MODE_EXT_LOAD_MODE 5 +#define HSDRAMC1_MODE_POWER_DOWN 6 + +/* Constants for NC */ +#define HSDRAMC1_NC_8_COLUMN_BITS 0 +#define HSDRAMC1_NC_9_COLUMN_BITS 1 +#define HSDRAMC1_NC_10_COLUMN_BITS 2 +#define HSDRAMC1_NC_11_COLUMN_BITS 3 + +/* Constants for NR */ +#define HSDRAMC1_NR_11_ROW_BITS 0 +#define HSDRAMC1_NR_12_ROW_BITS 1 +#define HSDRAMC1_NR_13_ROW_BITS 2 + +/* Constants for NB */ +#define HSDRAMC1_NB_TWO_BANKS 0 +#define HSDRAMC1_NB_FOUR_BANKS 1 + +/* Constants for CAS */ +#define HSDRAMC1_CAS_ONE_CYCLE 1 +#define HSDRAMC1_CAS_TWO_CYCLES 2 + +/* Constants for DBW */ +#define HSDRAMC1_DBW_32_BITS 0 +#define HSDRAMC1_DBW_16_BITS 1 + +/* Constants for TIMEOUT */ +#define HSDRAMC1_TIMEOUT_AFTER_END 0 +#define HSDRAMC1_TIMEOUT_64_CYC_AFTER_END 1 +#define HSDRAMC1_TIMEOUT_128_CYC_AFTER_END 2 + +/* Constants for MD */ +#define HSDRAMC1_MD_SDRAM 0 +#define HSDRAMC1_MD_LOW_POWER_SDRAM 1 + +/* Bit manipulation macros */ +#define HSDRAMC1_BIT(name) \ + (1 << HSDRAMC1_##name##_OFFSET) +#define HSDRAMC1_BF(name,value) \ + (((value) & ((1 << HSDRAMC1_##name##_SIZE) - 1)) \ + << HSDRAMC1_##name##_OFFSET) +#define HSDRAMC1_BFEXT(name,value) \ + (((value) >> HSDRAMC1_##name##_OFFSET) \ + & ((1 << HSDRAMC1_##name##_SIZE) - 1)) +#define HSDRAMC1_BFINS(name,value,old) \ + (((old) & ~(((1 << HSDRAMC1_##name##_SIZE) - 1) \ + << HSDRAMC1_##name##_OFFSET)) \ + | HSDRAMC1_BF(name,value)) + +/* Register access macros */ +#define hsdramc1_readl(port,reg) \ + readl((port)->regs + HSDRAMC1_##reg) +#define hsdramc1_writel(port,reg,value) \ + writel((value), (port)->regs + HSDRAMC1_##reg) + +#endif /* __ASM_AVR32_HSDRAMC1_H__ */ diff --git a/cpu/at32ap/hsmc3.h b/cpu/at32ap/hsmc3.h new file mode 100644 index 0000000..ec78cee --- /dev/null +++ b/cpu/at32ap/hsmc3.h @@ -0,0 +1,126 @@ +/* + * Register definitions for Static Memory Controller + */ +#ifndef __CPU_AT32AP_HSMC3_H__ +#define __CPU_AT32AP_HSMC3_H__ + +/* HSMC3 register offsets */ +#define HSMC3_SETUP0 0x0000 +#define HSMC3_PULSE0 0x0004 +#define HSMC3_CYCLE0 0x0008 +#define HSMC3_MODE0 0x000c +#define HSMC3_SETUP1 0x0010 +#define HSMC3_PULSE1 0x0014 +#define HSMC3_CYCLE1 0x0018 +#define HSMC3_MODE1 0x001c +#define HSMC3_SETUP2 0x0020 +#define HSMC3_PULSE2 0x0024 +#define HSMC3_CYCLE2 0x0028 +#define HSMC3_MODE2 0x002c +#define HSMC3_SETUP3 0x0030 +#define HSMC3_PULSE3 0x0034 +#define HSMC3_CYCLE3 0x0038 +#define HSMC3_MODE3 0x003c +#define HSMC3_SETUP4 0x0040 +#define HSMC3_PULSE4 0x0044 +#define HSMC3_CYCLE4 0x0048 +#define HSMC3_MODE4 0x004c +#define HSMC3_SETUP5 0x0050 +#define HSMC3_PULSE5 0x0054 +#define HSMC3_CYCLE5 0x0058 +#define HSMC3_MODE5 0x005c + +/* Bitfields in SETUP0 */ +#define HSMC3_NWE_SETUP_OFFSET 0 +#define HSMC3_NWE_SETUP_SIZE 6 +#define HSMC3_NCS_WR_SETUP_OFFSET 8 +#define HSMC3_NCS_WR_SETUP_SIZE 6 +#define HSMC3_NRD_SETUP_OFFSET 16 +#define HSMC3_NRD_SETUP_SIZE 6 +#define HSMC3_NCS_RD_SETUP_OFFSET 24 +#define HSMC3_NCS_RD_SETUP_SIZE 6 + +/* Bitfields in PULSE0 */ +#define HSMC3_NWE_PULSE_OFFSET 0 +#define HSMC3_NWE_PULSE_SIZE 7 +#define HSMC3_NCS_WR_PULSE_OFFSET 8 +#define HSMC3_NCS_WR_PULSE_SIZE 7 +#define HSMC3_NRD_PULSE_OFFSET 16 +#define HSMC3_NRD_PULSE_SIZE 7 +#define HSMC3_NCS_RD_PULSE_OFFSET 24 +#define HSMC3_NCS_RD_PULSE_SIZE 7 + +/* Bitfields in CYCLE0 */ +#define HSMC3_NWE_CYCLE_OFFSET 0 +#define HSMC3_NWE_CYCLE_SIZE 9 +#define HSMC3_NRD_CYCLE_OFFSET 16 +#define HSMC3_NRD_CYCLE_SIZE 9 + +/* Bitfields in MODE0 */ +#define HSMC3_READ_MODE_OFFSET 0 +#define HSMC3_READ_MODE_SIZE 1 +#define HSMC3_WRITE_MODE_OFFSET 1 +#define HSMC3_WRITE_MODE_SIZE 1 +#define HSMC3_EXNW_MODE_OFFSET 4 +#define HSMC3_EXNW_MODE_SIZE 2 +#define HSMC3_BAT_OFFSET 8 +#define HSMC3_BAT_SIZE 1 +#define HSMC3_DBW_OFFSET 12 +#define HSMC3_DBW_SIZE 2 +#define HSMC3_TDF_CYCLES_OFFSET 16 +#define HSMC3_TDF_CYCLES_SIZE 4 +#define HSMC3_TDF_MODE_OFFSET 20 +#define HSMC3_TDF_MODE_SIZE 1 +#define HSMC3_PMEN_OFFSET 24 +#define HSMC3_PMEN_SIZE 1 +#define HSMC3_PS_OFFSET 28 +#define HSMC3_PS_SIZE 2 + +/* Bitfields in MODE1 */ +#define HSMC3_PD_OFFSET 28 +#define HSMC3_PD_SIZE 2 + +/* Constants for READ_MODE */ +#define HSMC3_READ_MODE_NCS_CONTROLLED 0 +#define HSMC3_READ_MODE_NRD_CONTROLLED 1 + +/* Constants for WRITE_MODE */ +#define HSMC3_WRITE_MODE_NCS_CONTROLLED 0 +#define HSMC3_WRITE_MODE_NWE_CONTROLLED 1 + +/* Constants for EXNW_MODE */ +#define HSMC3_EXNW_MODE_DISABLED 0 +#define HSMC3_EXNW_MODE_RESERVED 1 +#define HSMC3_EXNW_MODE_FROZEN 2 +#define HSMC3_EXNW_MODE_READY 3 + +/* Constants for BAT */ +#define HSMC3_BAT_BYTE_SELECT 0 +#define HSMC3_BAT_BYTE_WRITE 1 + +/* Constants for DBW */ +#define HSMC3_DBW_8_BITS 0 +#define HSMC3_DBW_16_BITS 1 +#define HSMC3_DBW_32_BITS 2 + +/* Bit manipulation macros */ +#define HSMC3_BIT(name) \ + (1 << HSMC3_##name##_OFFSET) +#define HSMC3_BF(name,value) \ + (((value) & ((1 << HSMC3_##name##_SIZE) - 1)) \ + << HSMC3_##name##_OFFSET) +#define HSMC3_BFEXT(name,value) \ + (((value) >> HSMC3_##name##_OFFSET) \ + & ((1 << HSMC3_##name##_SIZE) - 1)) +#define HSMC3_BFINS(name,value,old)\ + (((old) & ~(((1 << HSMC3_##name##_SIZE) - 1) \ + << HSMC3_##name##_OFFSET)) \ + | HSMC3_BF(name,value)) + +/* Register access macros */ +#define hsmc3_readl(port,reg) \ + readl((port)->regs + HSMC3_##reg) +#define hsmc3_writel(port,reg,value) \ + writel((value), (port)->regs + HSMC3_##reg) + +#endif /* __CPU_AT32AP_HSMC3_H__ */ diff --git a/cpu/at32ap/interrupts.c b/cpu/at32ap/interrupts.c new file mode 100644 index 0000000..d720cfa --- /dev/null +++ b/cpu/at32ap/interrupts.c @@ -0,0 +1,154 @@ +/* + * Copyright (C) 2004-2006 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <common.h> + +#include <asm/div64.h> +#include <asm/errno.h> +#include <asm/io.h> +#include <asm/processor.h> +#include <asm/sysreg.h> + +#include <asm/arch/platform.h> + +#define HANDLER_MASK 0x00ffffff +#define INTLEV_SHIFT 30 +#define INTLEV_MASK 0x00000003 + +DECLARE_GLOBAL_DATA_PTR; + +/* Incremented whenever COUNT reaches 0xffffffff by timer_interrupt_handler */ +volatile unsigned long timer_overflow; + +/* + * Instead of dividing by get_tbclk(), multiply by this constant and + * right-shift the result by 32 bits. + */ +static unsigned long tb_factor; + +static const struct device *intc_dev; + +unsigned long get_tbclk(void) +{ + return gd->cpu_hz; +} + +unsigned long long get_ticks(void) +{ + unsigned long lo, hi_now, hi_prev; + + do { + hi_prev = timer_overflow; + lo = sysreg_read(COUNT); + hi_now = timer_overflow; + } while (hi_prev != hi_now); + + return ((unsigned long long)hi_now << 32) | lo; +} + +void reset_timer(void) +{ + sysreg_write(COUNT, 0); + cpu_sync_pipeline(); /* process any pending interrupts */ + timer_overflow = 0; +} + +unsigned long get_timer(unsigned long base) +{ + u64 now = get_ticks(); + + now *= tb_factor; + return (unsigned long)(now >> 32) - base; +} + +void set_timer(unsigned long t) +{ + unsigned long long ticks = t; + unsigned long lo, hi, hi_new; + + ticks = (ticks * get_tbclk()) / CFG_HZ; + hi = ticks >> 32; + lo = ticks & 0xffffffffUL; + + do { + timer_overflow = hi; + sysreg_write(COUNT, lo); + hi_new = timer_overflow; + } while (hi_new != hi); +} + +/* + * For short delays only. It will overflow after a few seconds. + */ +void udelay(unsigned long usec) +{ + unsigned long now, end; + + now = sysreg_read(COUNT); + + end = ((usec * (get_tbclk() / 10000)) + 50) / 100; + end += now; + + while (now > end) + now = sysreg_read(COUNT); + + while (now < end) + now = sysreg_read(COUNT); +} + +static int set_interrupt_handler(unsigned int nr, void (*handler)(void), + unsigned int priority) +{ + unsigned long intpr; + unsigned long handler_addr = (unsigned long)handler; + + if ((handler_addr & HANDLER_MASK) != handler_addr + || (priority & INTLEV_MASK) != priority) + return -EINVAL; + + intpr = (handler_addr & HANDLER_MASK); + intpr |= (priority & INTLEV_MASK) << INTLEV_SHIFT; + writel(intpr, intc_dev->regs + 4 * nr); + + return 0; +} + +void timer_init(void) +{ + extern void timer_interrupt_handler(void); + u64 tmp; + + sysreg_write(COUNT, 0); + + tmp = (u64)CFG_HZ << 32; + tmp += gd->cpu_hz / 2; + do_div(tmp, gd->cpu_hz); + tb_factor = (u32)tmp; + + intc_dev = get_device(DEVICE_INTC); + + if (!intc_dev + || set_interrupt_handler(0, &timer_interrupt_handler, 3)) + return; + + /* For all practical purposes, this gives us an overflow interrupt */ + sysreg_write(COMPARE, 0xffffffff); +} diff --git a/cpu/at32ap/pio.c b/cpu/at32ap/pio.c new file mode 100644 index 0000000..8b6c3a3 --- /dev/null +++ b/cpu/at32ap/pio.c @@ -0,0 +1,94 @@ +/* + * Copyright (C) 2006 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <common.h> + +#include <asm/errno.h> +#include <asm/io.h> +#include <asm/arch/platform.h> + +#include "pio2.h" + +struct pio_state { + const struct device *dev; + u32 alloc_mask; +}; + +static struct pio_state pio_state[CFG_NR_PIOS]; + +int gpio_set_func(enum device_id gpio_devid, unsigned int start, + unsigned int nr_pins, enum gpio_func func) +{ + const struct device *gpio; + struct pio_state *state; + u32 mask; + + state = &pio_state[gpio_devid - DEVICE_PIOA]; + + gpio = get_device(gpio_devid); + if (!gpio) + return -EBUSY; + + state->dev = gpio; + mask = ((1 << nr_pins) - 1) << start; + + if (mask & state->alloc_mask) { + put_device(gpio); + return -EBUSY; + } + state->alloc_mask |= mask; + + switch (func) { + case GPIO_FUNC_GPIO: + /* TODO */ + return -EINVAL; + case GPIO_FUNC_A: + pio2_writel(gpio, ASR, mask); + pio2_writel(gpio, PDR, mask); + pio2_writel(gpio, PUDR, mask); + break; + case GPIO_FUNC_B: + pio2_writel(gpio, BSR, mask); + pio2_writel(gpio, PDR, mask); + pio2_writel(gpio, PUDR, mask); + break; + } + + return 0; +} + +void gpio_free(enum device_id gpio_devid, unsigned int start, + unsigned int nr_pins) +{ + const struct device *gpio; + struct pio_state *state; + u32 mask; + + state = &pio_state[gpio_devid - DEVICE_PIOA]; + gpio = state->dev; + mask = ((1 << nr_pins) - 1) << start; + + pio2_writel(gpio, ODR, mask); + pio2_writel(gpio, PER, mask); + + state->alloc_mask &= ~mask; + put_device(gpio); +} diff --git a/cpu/at32ap/pio2.h b/cpu/at32ap/pio2.h new file mode 100644 index 0000000..6b79de3 --- /dev/null +++ b/cpu/at32ap/pio2.h @@ -0,0 +1,44 @@ +/* + * Register definitions for Parallel Input/Output Controller + */ +#ifndef __CPU_AT32AP_PIO2_H__ +#define __CPU_AT32AP_PIO2_H__ + +/* PIO2 register offsets */ +#define PIO2_PER 0x0000 +#define PIO2_PDR 0x0004 +#define PIO2_PSR 0x0008 +#define PIO2_OER 0x0010 +#define PIO2_ODR 0x0014 +#define PIO2_OSR 0x0018 +#define PIO2_IFER 0x0020 +#define PIO2_IFDR 0x0024 +#define PIO2_ISFR 0x0028 +#define PIO2_SODR 0x0030 +#define PIO2_CODR 0x0034 +#define PIO2_ODSR 0x0038 +#define PIO2_PDSR 0x003c +#define PIO2_IER 0x0040 +#define PIO2_IDR 0x0044 +#define PIO2_IMR 0x0048 +#define PIO2_ISR 0x004c +#define PIO2_MDER 0x0050 +#define PIO2_MDDR 0x0054 +#define PIO2_MDSR 0x0058 +#define PIO2_PUDR 0x0060 +#define PIO2_PUER 0x0064 +#define PIO2_PUSR 0x0068 +#define PIO2_ASR 0x0070 +#define PIO2_BSR 0x0074 +#define PIO2_ABSR 0x0078 +#define PIO2_OWER 0x00a0 +#define PIO2_OWDR 0x00a4 +#define PIO2_OWSR 0x00a8 + +/* Register access macros */ +#define pio2_readl(port,reg) \ + readl((port)->regs + PIO2_##reg) +#define pio2_writel(port,reg,value) \ + writel((value), (port)->regs + PIO2_##reg) + +#endif /* __CPU_AT32AP_PIO2_H__ */ diff --git a/cpu/at32ap/pm.c b/cpu/at32ap/pm.c new file mode 100644 index 0000000..01ac325 --- /dev/null +++ b/cpu/at32ap/pm.c @@ -0,0 +1,163 @@ +/* + * Copyright (C) 2006 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <common.h> + +#ifdef CFG_POWER_MANAGER +#include <asm/errno.h> +#include <asm/io.h> + +#include <asm/arch/memory-map.h> +#include <asm/arch/platform.h> + +#include "sm.h" + +/* Sanity checks */ +#if (CFG_CLKDIV_CPU > CFG_CLKDIV_HSB) \ + || (CFG_CLKDIV_HSB > CFG_CLKDIV_PBA) \ + || (CFG_CLKDIV_HSB > CFG_CLKDIV_PBB) +# error Constraint fCPU >= fHSB >= fPB{A,B} violated +#endif +#if defined(CONFIG_PLL) && ((CFG_PLL0_MUL < 1) || (CFG_PLL0_DIV < 1)) +# error Invalid PLL multiplier and/or divider +#endif + +DECLARE_GLOBAL_DATA_PTR; + +struct clock_domain_state { + const struct device *bridge; + unsigned long freq; + u32 mask; +}; +static struct clock_domain_state ckd_state[NR_CLOCK_DOMAINS]; + +int pm_enable_clock(enum clock_domain_id id, unsigned int index) +{ + const struct clock_domain *ckd = &chip_clock[id]; + struct clock_domain_state *state = &ckd_state[id]; + + if (ckd->bridge != NO_DEVICE) { + state->bridge = get_device(ckd->bridge); + if (!state->bridge) + return -EBUSY; + } + + state->mask |= 1 << index; + if (gd->sm) + writel(state->mask, gd->sm->regs + ckd->reg); + + return 0; +} + +void pm_disable_clock(enum clock_domain_id id, unsigned int index) +{ + const struct clock_domain *ckd = &chip_clock[id]; + struct clock_domain_state *state = &ckd_state[id]; + + state->mask &= ~(1 << index); + if (gd->sm) + writel(state->mask, gd->sm->regs + ckd->reg); + + if (ckd->bridge) + put_device(state->bridge); +} + +unsigned long pm_get_clock_freq(enum clock_domain_id domain) +{ + return ckd_state[domain].freq; +} + +void pm_init(void) +{ + uint32_t cksel = 0; + unsigned long main_clock; + + /* Make sure we don't disable any device we're already using */ + get_device(DEVICE_HRAMC); + get_device(DEVICE_HEBI); + + /* Enable the PICO as well */ + ckd_state[CLOCK_CPU].mask |= 1; + + gd->sm = get_device(DEVICE_SM); + if (!gd->sm) + panic("Unable to claim system manager device!\n"); + + /* Disable any devices that haven't been explicitly claimed */ + sm_writel(gd->sm, PM_PBB_MASK, ckd_state[CLOCK_PBB].mask); + sm_writel(gd->sm, PM_PBA_MASK, ckd_state[CLOCK_PBA].mask); + sm_writel(gd->sm, PM_HSB_MASK, ckd_state[CLOCK_HSB].mask); + sm_writel(gd->sm, PM_CPU_MASK, ckd_state[CLOCK_CPU].mask); + +#ifdef CONFIG_PLL + /* Initialize the PLL */ + main_clock = (CFG_OSC0_HZ / CFG_PLL0_DIV) * CFG_PLL0_MUL; + + sm_writel(gd->sm, PM_PLL0, (SM_BF(PLLCOUNT, CFG_PLL0_SUPPRESS_CYCLES) + | SM_BF(PLLMUL, CFG_PLL0_MUL - 1) + | SM_BF(PLLDIV, CFG_PLL0_DIV - 1) + | SM_BF(PLLOPT, CFG_PLL0_OPT) + | SM_BF(PLLOSC, 0) + | SM_BIT(PLLEN))); + + /* Wait for lock */ + while (!(sm_readl(gd->sm, PM_ISR) & SM_BIT(LOCK0))) ; +#else + main_clock = CFG_OSC0_HZ; +#endif + + /* Set up clocks for the CPU and all peripheral buses */ + if (CFG_CLKDIV_CPU) { + cksel |= SM_BIT(CPUDIV) | SM_BF(CPUSEL, CFG_CLKDIV_CPU - 1); + ckd_state[CLOCK_CPU].freq = main_clock / (1 << CFG_CLKDIV_CPU); + } else { + ckd_state[CLOCK_CPU].freq = main_clock; + } + if (CFG_CLKDIV_HSB) { + cksel |= SM_BIT(HSBDIV) | SM_BF(HSBSEL, CFG_CLKDIV_HSB - 1); + ckd_state[CLOCK_HSB].freq = main_clock / (1 << CFG_CLKDIV_HSB); + } else { + ckd_state[CLOCK_HSB].freq = main_clock; + } + if (CFG_CLKDIV_PBA) { + cksel |= SM_BIT(PBADIV) | SM_BF(PBASEL, CFG_CLKDIV_PBA - 1); + ckd_state[CLOCK_PBA].freq = main_clock / (1 << CFG_CLKDIV_PBA); + } else { + ckd_state[CLOCK_PBA].freq = main_clock; + } + if (CFG_CLKDIV_PBB) { + cksel |= SM_BIT(PBBDIV) | SM_BF(PBBSEL, CFG_CLKDIV_PBB - 1); + ckd_state[CLOCK_PBB].freq = main_clock / (1 << CFG_CLKDIV_PBB); + } else { + ckd_state[CLOCK_PBB].freq = main_clock; + } + sm_writel(gd->sm, PM_CKSEL, cksel); + + /* CFG_HZ currently depends on cpu_hz */ + gd->cpu_hz = ckd_state[CLOCK_CPU].freq; + +#ifdef CONFIG_PLL + /* Use PLL0 as main clock */ + sm_writel(gd->sm, PM_MCCTRL, SM_BIT(PLLSEL)); +#endif +} + +#endif /* CFG_POWER_MANAGER */ diff --git a/cpu/at32ap/sm.h b/cpu/at32ap/sm.h new file mode 100644 index 0000000..ce81ef0 --- /dev/null +++ b/cpu/at32ap/sm.h @@ -0,0 +1,204 @@ +/* + * Register definitions for System Manager + */ +#ifndef __CPU_AT32AP_SM_H__ +#define __CPU_AT32AP_SM_H__ + +/* SM register offsets */ +#define SM_PM_MCCTRL 0x0000 +#define SM_PM_CKSEL 0x0004 +#define SM_PM_CPU_MASK 0x0008 +#define SM_PM_HSB_MASK 0x000c +#define SM_PM_PBA_MASK 0x0010 +#define SM_PM_PBB_MASK 0x0014 +#define SM_PM_PLL0 0x0020 +#define SM_PM_PLL1 0x0024 +#define SM_PM_VCTRL 0x0030 +#define SM_PM_VMREF 0x0034 +#define SM_PM_VMV 0x0038 +#define SM_PM_IER 0x0040 +#define SM_PM_IDR 0x0044 +#define SM_PM_IMR 0x0048 +#define SM_PM_ISR 0x004c +#define SM_PM_ICR 0x0050 +#define SM_PM_GCCTRL 0x0060 +#define SM_RTC_CTRL 0x0080 +#define SM_RTC_VAL 0x0084 +#define SM_RTC_TOP 0x0088 +#define SM_RTC_IER 0x0090 +#define SM_RTC_IDR 0x0094 +#define SM_RTC_IMR 0x0098 +#define SM_RTC_ISR 0x009c +#define SM_RTC_ICR 0x00a0 +#define SM_WDT_CTRL 0x00b0 +#define SM_WDT_CLR 0x00b4 +#define SM_WDT_EXT 0x00b8 +#define SM_RC_RCAUSE 0x00c0 +#define SM_EIM_IER 0x0100 +#define SM_EIM_IDR 0x0104 +#define SM_EIM_IMR 0x0108 +#define SM_EIM_ISR 0x010c +#define SM_EIM_ICR 0x0110 +#define SM_EIM_MODE 0x0114 +#define SM_EIM_EDGE 0x0118 +#define SM_EIM_LEVEL 0x011c +#define SM_EIM_TEST 0x0120 +#define SM_EIM_NMIC 0x0124 + +/* Bitfields in PM_CKSEL */ +#define SM_CPUSEL_OFFSET 0 +#define SM_CPUSEL_SIZE 3 +#define SM_CPUDIV_OFFSET 7 +#define SM_CPUDIV_SIZE 1 +#define SM_HSBSEL_OFFSET 8 +#define SM_HSBSEL_SIZE 3 +#define SM_HSBDIV_OFFSET 15 +#define SM_HSBDIV_SIZE 1 +#define SM_PBASEL_OFFSET 16 +#define SM_PBASEL_SIZE 3 +#define SM_PBADIV_OFFSET 23 +#define SM_PBADIV_SIZE 1 +#define SM_PBBSEL_OFFSET 24 +#define SM_PBBSEL_SIZE 3 +#define SM_PBBDIV_OFFSET 31 +#define SM_PBBDIV_SIZE 1 + +/* Bitfields in PM_PLL0 */ +#define SM_PLLEN_OFFSET 0 +#define SM_PLLEN_SIZE 1 +#define SM_PLLOSC_OFFSET 1 +#define SM_PLLOSC_SIZE 1 +#define SM_PLLOPT_OFFSET 2 +#define SM_PLLOPT_SIZE 3 +#define SM_PLLDIV_OFFSET 8 +#define SM_PLLDIV_SIZE 8 +#define SM_PLLMUL_OFFSET 16 +#define SM_PLLMUL_SIZE 8 +#define SM_PLLCOUNT_OFFSET 24 +#define SM_PLLCOUNT_SIZE 6 +#define SM_PLLTEST_OFFSET 31 +#define SM_PLLTEST_SIZE 1 + +/* Bitfields in PM_VCTRL */ +#define SM_VAUTO_OFFSET 0 +#define SM_VAUTO_SIZE 1 +#define SM_PM_VCTRL_VAL_OFFSET 8 +#define SM_PM_VCTRL_VAL_SIZE 7 + +/* Bitfields in PM_VMREF */ +#define SM_REFSEL_OFFSET 0 +#define SM_REFSEL_SIZE 4 + +/* Bitfields in PM_VMV */ +#define SM_PM_VMV_VAL_OFFSET 0 +#define SM_PM_VMV_VAL_SIZE 8 + +/* Bitfields in PM_ICR */ +#define SM_LOCK0_OFFSET 0 +#define SM_LOCK0_SIZE 1 +#define SM_LOCK1_OFFSET 1 +#define SM_LOCK1_SIZE 1 +#define SM_WAKE_OFFSET 2 +#define SM_WAKE_SIZE 1 +#define SM_VOK_OFFSET 3 +#define SM_VOK_SIZE 1 +#define SM_VMRDY_OFFSET 4 +#define SM_VMRDY_SIZE 1 +#define SM_CKRDY_OFFSET 5 +#define SM_CKRDY_SIZE 1 + +/* Bitfields in PM_GCCTRL */ +#define SM_OSCSEL_OFFSET 0 +#define SM_OSCSEL_SIZE 1 +#define SM_PLLSEL_OFFSET 1 +#define SM_PLLSEL_SIZE 1 +#define SM_CEN_OFFSET 2 +#define SM_CEN_SIZE 1 +#define SM_CPC_OFFSET 3 +#define SM_CPC_SIZE 1 +#define SM_DIVEN_OFFSET 4 +#define SM_DIVEN_SIZE 1 +#define SM_DIV_OFFSET 8 +#define SM_DIV_SIZE 8 + +/* Bitfields in RTC_CTRL */ +#define SM_PCLR_OFFSET 1 +#define SM_PCLR_SIZE 1 +#define SM_TOPEN_OFFSET 2 +#define SM_TOPEN_SIZE 1 +#define SM_CLKEN_OFFSET 3 +#define SM_CLKEN_SIZE 1 +#define SM_PSEL_OFFSET 8 +#define SM_PSEL_SIZE 16 + +/* Bitfields in RTC_VAL */ +#define SM_RTC_VAL_VAL_OFFSET 0 +#define SM_RTC_VAL_VAL_SIZE 31 + +/* Bitfields in RTC_TOP */ +#define SM_RTC_TOP_VAL_OFFSET 0 +#define SM_RTC_TOP_VAL_SIZE 32 + +/* Bitfields in RTC_ICR */ +#define SM_TOPI_OFFSET 0 +#define SM_TOPI_SIZE 1 + +/* Bitfields in WDT_CTRL */ +#define SM_KEY_OFFSET 24 +#define SM_KEY_SIZE 8 + +/* Bitfields in RC_RCAUSE */ +#define SM_POR_OFFSET 0 +#define SM_POR_SIZE 1 +#define SM_BOD_OFFSET 1 +#define SM_BOD_SIZE 1 +#define SM_EXT_OFFSET 2 +#define SM_EXT_SIZE 1 +#define SM_WDT_OFFSET 3 +#define SM_WDT_SIZE 1 +#define SM_NTAE_OFFSET 4 +#define SM_NTAE_SIZE 1 +#define SM_SERP_OFFSET 5 +#define SM_SERP_SIZE 1 + +/* Bitfields in EIM_EDGE */ +#define SM_INT0_OFFSET 0 +#define SM_INT0_SIZE 1 +#define SM_INT1_OFFSET 1 +#define SM_INT1_SIZE 1 +#define SM_INT2_OFFSET 2 +#define SM_INT2_SIZE 1 +#define SM_INT3_OFFSET 3 +#define SM_INT3_SIZE 1 + +/* Bitfields in EIM_LEVEL */ + +/* Bitfields in EIM_TEST */ +#define SM_TESTEN_OFFSET 31 +#define SM_TESTEN_SIZE 1 + +/* Bitfields in EIM_NMIC */ +#define SM_EN_OFFSET 0 +#define SM_EN_SIZE 1 + +/* Bit manipulation macros */ +#define SM_BIT(name) \ + (1 << SM_##name##_OFFSET) +#define SM_BF(name,value) \ + (((value) & ((1 << SM_##name##_SIZE) - 1)) \ + << SM_##name##_OFFSET) +#define SM_BFEXT(name,value) \ + (((value) >> SM_##name##_OFFSET) \ + & ((1 << SM_##name##_SIZE) - 1)) +#define SM_BFINS(name,value,old) \ + (((old) & ~(((1 << SM_##name##_SIZE) - 1) \ + << SM_##name##_OFFSET)) \ + | SM_BF(name,value)) + +/* Register access macros */ +#define sm_readl(port,reg) \ + readl((port)->regs + SM_##reg) +#define sm_writel(port,reg,value) \ + writel((value), (port)->regs + SM_##reg) + +#endif /* __CPU_AT32AP_SM_H__ */ diff --git a/cpu/at32ap/start.S b/cpu/at32ap/start.S new file mode 100644 index 0000000..79ee33b --- /dev/null +++ b/cpu/at32ap/start.S @@ -0,0 +1,113 @@ +/* + * Copyright (C) 2005-2006 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <config.h> +#include <asm/sysreg.h> + +#ifndef PART_SPECIFIC_BOOTSTRAP +# define PART_SPECIFIC_BOOTSTRAP +#endif + +#define SYSREG_MMUCR_I_OFFSET 2 +#define SYSREG_MMUCR_S_OFFSET 4 + +#define SR_INIT (SYSREG_BIT(GM) | SYSREG_BIT(EM) | SYSREG_BIT(M0)) +#define CPUCR_INIT (SYSREG_BIT(BI) | SYSREG_BIT(BE) \ + | SYSREG_BIT(FE) | SYSREG_BIT(RE) \ + | SYSREG_BIT(IBE) | SYSREG_BIT(IEE)) + + .text + .global _start +_start: + PART_SPECIFIC_BOOTSTRAP + + /* Reset the Status Register */ + mov r0, lo(SR_INIT) + orh r0, hi(SR_INIT) + mtsr SYSREG_SR, r0 + + /* Reset CPUCR and invalidate the BTB */ + mov r2, CPUCR_INIT + mtsr SYSREG_CPUCR, r2 + + /* Flush the caches */ + mov r1, 0 + cache r1[4], 8 + cache r1[0], 0 + sync 0 + + /* Reset the MMU to default settings */ + mov r0, SYSREG_BIT(MMUCR_S) | SYSREG_BIT(MMUCR_I) + mtsr SYSREG_MMUCR, r0 + + /* Internal RAM should not need any initialization. We might + have to initialize external RAM here if the part doesn't + have internal RAM (or we may use the data cache) */ + + /* Jump to cacheable segment */ + lddpc pc, 1f + + .align 2 +1: .long 2f + +2: lddpc sp, sp_init + + /* + * Relocate the data section and initialize .bss. Everything + * is guaranteed to be at least doubleword aligned by the + * linker script. + */ + lddpc r12, .Ldata_vma + lddpc r11, .Ldata_lma + lddpc r10, .Ldata_end + sub r10, r12 +4: ld.d r8, r11++ + sub r10, 8 + st.d r12++, r8 + brne 4b + + mov r8, 0 + mov r9, 0 + lddpc r10, .Lbss_end + sub r10, r12 +4: sub r10, 8 + st.d r12++, r8 + brne 4b + + /* Initialize the GOT pointer */ + lddpc r6, got_init +3: rsub r6, pc + ld.w pc, r6[start_u_boot@got] + + .align 2 + .type sp_init,@object +sp_init: + .long CFG_INIT_SP_ADDR +got_init: + .long 3b - _GLOBAL_OFFSET_TABLE_ +.Ldata_lma: + .long __data_lma +.Ldata_vma: + .long _data +.Ldata_end: + .long _edata +.Lbss_end: + .long _end |