From 5fb17030d5634d9951da48af69be08146eb71bf9 Mon Sep 17 00:00:00 2001 From: Ilya Yanok Date: Wed, 7 Jul 2010 20:16:13 +0400 Subject: MPC8308RDB: minimal support for devboard from Freescale This patch provides support for MPC8308RDB development board from Freescale with a minimal set of features: Dual UART is supported NOR flash is supported Both TSEC Ethernet controllers are supported PCI Express initialization is supported The following features are enabled in configuration but not fully tested: I2C (used to get the board revision) I2C-connected RTC VSC7385 switch There is one (hopefully) minor issue: on soft reset the board sometimes resets twice. I've not managed to find the fix for this problem yet. As a workaround instruction cache can be disabled. Signed-off-by: Ilya Yanok Signed-off-by: Kim Phillips --- board/freescale/mpc8308rdb/Makefile | 52 +++++++++++ board/freescale/mpc8308rdb/config.mk | 1 + board/freescale/mpc8308rdb/mpc8308rdb.c | 160 ++++++++++++++++++++++++++++++++ board/freescale/mpc8308rdb/sdram.c | 126 +++++++++++++++++++++++++ 4 files changed, 339 insertions(+) create mode 100644 board/freescale/mpc8308rdb/Makefile create mode 100644 board/freescale/mpc8308rdb/config.mk create mode 100644 board/freescale/mpc8308rdb/mpc8308rdb.c create mode 100644 board/freescale/mpc8308rdb/sdram.c (limited to 'board/freescale/mpc8308rdb') diff --git a/board/freescale/mpc8308rdb/Makefile b/board/freescale/mpc8308rdb/Makefile new file mode 100644 index 0000000..e9bfa2b --- /dev/null +++ b/board/freescale/mpc8308rdb/Makefile @@ -0,0 +1,52 @@ +# +# (C) Copyright 2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# (C) Copyright 2010 +# Ilya Yanok, Emcraft Systems, yanok@emcraft.com +# +# 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 = $(obj)lib$(BOARD).a + +COBJS := $(BOARD).o sdram.o + +SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS)) +SOBJS := $(addprefix $(obj),$(SOBJS)) + +$(LIB): $(obj).depend $(OBJS) + $(AR) $(ARFLAGS) $@ $(OBJS) + +clean: + rm -f $(SOBJS) $(OBJS) + +distclean: clean + rm -f $(LIB) core *.bak $(obj).depend + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/board/freescale/mpc8308rdb/config.mk b/board/freescale/mpc8308rdb/config.mk new file mode 100644 index 0000000..f768264 --- /dev/null +++ b/board/freescale/mpc8308rdb/config.mk @@ -0,0 +1 @@ +TEXT_BASE = 0xFE000000 diff --git a/board/freescale/mpc8308rdb/mpc8308rdb.c b/board/freescale/mpc8308rdb/mpc8308rdb.c new file mode 100644 index 0000000..a864189 --- /dev/null +++ b/board/freescale/mpc8308rdb/mpc8308rdb.c @@ -0,0 +1,160 @@ +/* + * Copyright (C) 2010 Freescale Semiconductor, Inc. + * Copyright (C) 2010 Ilya Yanok, Emcraft Systems, yanok@emcraft.com + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +int board_early_init_f(void) +{ + immap_t *im = (immap_t *)CONFIG_SYS_IMMR; + + if (in_be32(&im->pmc.pmccr1) & PMCCR1_POWER_OFF) + gd->flags |= GD_FLG_SILENT; + + return 0; +} + +static u8 read_board_info(void) +{ + u8 val8; + i2c_set_bus_num(0); + + if (i2c_read(CONFIG_SYS_I2C_PCF8574A_ADDR, 0, 0, &val8, 1) == 0) + return val8; + else + return 0; +} + +int checkboard(void) +{ + static const char * const rev_str[] = { + "1.0", + "", + "", + "", + "", + }; + u8 info; + int i; + + info = read_board_info(); + i = (!info) ? 4 : info & 0x03; + + printf("Board: Freescale MPC8308RDB Rev %s\n", rev_str[i]); + + return 0; +} + +static struct pci_region pcie_regions_0[] = { + { + .bus_start = CONFIG_SYS_PCIE1_MEM_BASE, + .phys_start = CONFIG_SYS_PCIE1_MEM_PHYS, + .size = CONFIG_SYS_PCIE1_MEM_SIZE, + .flags = PCI_REGION_MEM, + }, + { + .bus_start = CONFIG_SYS_PCIE1_IO_BASE, + .phys_start = CONFIG_SYS_PCIE1_IO_PHYS, + .size = CONFIG_SYS_PCIE1_IO_SIZE, + .flags = PCI_REGION_IO, + }, +}; + +void pci_init_board(void) +{ + immap_t *immr = (immap_t *)CONFIG_SYS_IMMR; + sysconf83xx_t *sysconf = &immr->sysconf; + clk83xx_t *clk = (clk83xx_t *)&immr->clk; + law83xx_t *pcie_law = sysconf->pcielaw; + struct pci_region *pcie_reg[] = { pcie_regions_0 }; + + fsl_setup_serdes(CONFIG_FSL_SERDES1, FSL_SERDES_PROTO_PEX, + FSL_SERDES_CLK_100, FSL_SERDES_VDD_1V); + + clrsetbits_be32(&clk->sccr, SCCR_PCIEXP1CM , + SCCR_PCIEXP1CM_1); + + /* Deassert the resets in the control register */ + out_be32(&sysconf->pecr1, 0xE0008000); + udelay(2000); + + /* Configure PCI Express Local Access Windows */ + out_be32(&pcie_law[0].bar, CONFIG_SYS_PCIE1_BASE & LAWBAR_BAR); + out_be32(&pcie_law[0].ar, LBLAWAR_EN | LBLAWAR_512MB); + + mpc83xx_pcie_init(1, pcie_reg, 0); +} +/* + * Miscellaneous late-boot configurations + * + * If a VSC7385 microcode image is present, then upload it. +*/ +int misc_init_r(void) +{ +#ifdef CONFIG_VSC7385_IMAGE + if (vsc7385_upload_firmware((void *) CONFIG_VSC7385_IMAGE, + CONFIG_VSC7385_IMAGE_SIZE)) { + puts("Failure uploading VSC7385 microcode.\n"); + return 1; + } +#endif + + return 0; +} +#if defined(CONFIG_OF_BOARD_SETUP) +void ft_board_setup(void *blob, bd_t *bd) +{ + ft_cpu_setup(blob, bd); + fdt_fixup_dr_usb(blob, bd); +} +#endif + +int board_eth_init(bd_t *bis) +{ + int rv, num_if = 0; + + /* Initialize TSECs first */ + if ((rv = cpu_eth_init(bis)) >= 0) + num_if += rv; + else + printf("ERROR: failed to initialize TSECs.\n"); + + if ((rv = pci_eth_init(bis)) >= 0) + num_if += rv; + else + printf("ERROR: failed to initialize PCI Ethernet.\n"); + + return num_if; +} diff --git a/board/freescale/mpc8308rdb/sdram.c b/board/freescale/mpc8308rdb/sdram.c new file mode 100644 index 0000000..939c1b8 --- /dev/null +++ b/board/freescale/mpc8308rdb/sdram.c @@ -0,0 +1,126 @@ +/* + * Copyright (C) 2007 Freescale Semiconductor, Inc. + * Copyright (C) 2010 Ilya Yanok, Emcraft Systems, yanok@emcraft.com + * + * Authors: Nick.Spence@freescale.com + * Wilson.Lo@freescale.com + * scottwood@freescale.com + * + * This files is mostly identical to the original from + * board\freescale\mpc8315erdb\sdram.c + * + * 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 +#include + +#include +#include + +#include + +DECLARE_GLOBAL_DATA_PTR; + +static void resume_from_sleep(void) +{ + u32 magic = *(u32 *)0; + + typedef void (*func_t)(void); + func_t resume = *(func_t *)4; + + if (magic == 0xf5153ae5) + resume(); + + gd->flags &= ~GD_FLG_SILENT; + puts("\nResume from sleep failed: bad magic word\n"); +} + +/* Fixed sdram init -- doesn't use serial presence detect. + * + * This is useful for faster booting in configs where the RAM is unlikely + * to be changed, or for things like NAND booting where space is tight. + */ +static long fixed_sdram(void) +{ + immap_t *im = (immap_t *)CONFIG_SYS_IMMR; + u32 msize = CONFIG_SYS_DDR_SIZE * 1024 * 1024; + u32 msize_log2 = __ilog2(msize); + + out_be32(&im->sysconf.ddrlaw[0].bar, + CONFIG_SYS_DDR_SDRAM_BASE & 0xfffff000); + out_be32(&im->sysconf.ddrlaw[0].ar, LBLAWAR_EN | (msize_log2 - 1)); + out_be32(&im->sysconf.ddrcdr, CONFIG_SYS_DDRCDR_VALUE); + + /* + * Erratum DDR3 requires a 50ms delay after clearing DDRCDR[DDR_cfg], + * or the DDR2 controller may fail to initialize correctly. + */ + udelay(50000); + + out_be32(&im->ddr.csbnds[0].csbnds, (msize - 1) >> 24); + out_be32(&im->ddr.cs_config[0], CONFIG_SYS_DDR_CS0_CONFIG); + + /* Currently we use only one CS, so disable the other bank. */ + out_be32(&im->ddr.cs_config[1], 0); + + out_be32(&im->ddr.sdram_clk_cntl, CONFIG_SYS_DDR_SDRAM_CLK_CNTL); + out_be32(&im->ddr.timing_cfg_3, CONFIG_SYS_DDR_TIMING_3); + out_be32(&im->ddr.timing_cfg_1, CONFIG_SYS_DDR_TIMING_1); + out_be32(&im->ddr.timing_cfg_2, CONFIG_SYS_DDR_TIMING_2); + out_be32(&im->ddr.timing_cfg_0, CONFIG_SYS_DDR_TIMING_0); + + if (in_be32(&im->pmc.pmccr1) & PMCCR1_POWER_OFF) { + out_be32(&im->ddr.sdram_cfg, + CONFIG_SYS_DDR_SDRAM_CFG | SDRAM_CFG_BI); + } else { + out_be32(&im->ddr.sdram_cfg, CONFIG_SYS_DDR_SDRAM_CFG); + } + + out_be32(&im->ddr.sdram_cfg2, CONFIG_SYS_DDR_SDRAM_CFG2); + out_be32(&im->ddr.sdram_mode, CONFIG_SYS_DDR_MODE); + out_be32(&im->ddr.sdram_mode2, CONFIG_SYS_DDR_MODE2); + + out_be32(&im->ddr.sdram_interval, CONFIG_SYS_DDR_INTERVAL); + sync(); + + /* enable DDR controller */ + setbits_be32(&im->ddr.sdram_cfg, SDRAM_CFG_MEM_EN); + sync(); + + return get_ram_size(CONFIG_SYS_DDR_SDRAM_BASE, msize); +} + +phys_size_t initdram(int board_type) +{ + immap_t *im = (immap_t *)CONFIG_SYS_IMMR; + u32 msize; + + if ((in_be32(&im->sysconf.immrbar) & IMMRBAR_BASE_ADDR) != (u32)im) + return -1; + + /* DDR SDRAM */ + msize = fixed_sdram(); + + if (in_be32(&im->pmc.pmccr1) & PMCCR1_POWER_OFF) + resume_from_sleep(); + + /* return total bus SDRAM size(bytes) -- DDR */ + return msize; +} -- cgit v1.1