diff options
Diffstat (limited to 'board/armadeus/apf27')
| -rw-r--r-- | board/armadeus/apf27/Makefile | 33 | ||||
| -rw-r--r-- | board/armadeus/apf27/apf27.c | 256 | ||||
| -rw-r--r-- | board/armadeus/apf27/apf27.h | 489 | ||||
| -rw-r--r-- | board/armadeus/apf27/fpga.c | 224 | ||||
| -rw-r--r-- | board/armadeus/apf27/fpga.h | 25 | ||||
| -rw-r--r-- | board/armadeus/apf27/lowlevel_init.S | 168 |
6 files changed, 1195 insertions, 0 deletions
diff --git a/board/armadeus/apf27/Makefile b/board/armadeus/apf27/Makefile new file mode 100644 index 0000000..5fcda6e --- /dev/null +++ b/board/armadeus/apf27/Makefile @@ -0,0 +1,33 @@ +# +# (C) Copyright 2000-2004 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# (C) Copyright 2012-2013 +# Eric Jarrige <eric.jarrige@armadeus.org> +# +# SPDX-License-Identifier: GPL-2.0+ +# + +include $(TOPDIR)/config.mk + +LIB = $(obj)lib$(BOARD).o + +COBJS := apf27.o +SOBJS := lowlevel_init.o +ifdef CONFIG_FPGA +COBJS += fpga.o +endif + +SRCS := $(COBJS:.o=.c) $(SOBJS:.o=.S) +OBJS := $(addprefix $(obj),$(COBJS)) +SOBJS := $(addprefix $(obj),$(SOBJS)) + +$(LIB): $(obj).depend $(OBJS) $(SOBJS) + $(call cmd_link_o_target, $(OBJS) $(SOBJS)) + +######################################################################### + +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/board/armadeus/apf27/apf27.c b/board/armadeus/apf27/apf27.c new file mode 100644 index 0000000..30e720d --- /dev/null +++ b/board/armadeus/apf27/apf27.c @@ -0,0 +1,256 @@ +/* + * Copyright (C) 2008-2013 Eric Jarrige <eric.jarrige@armadeus.org> + * + * based on the files by + * Sascha Hauer, Pengutronix + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <environment.h> +#include <jffs2/jffs2.h> +#include <nand.h> +#include <netdev.h> +#include <asm/io.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/gpio.h> +#include <asm/gpio.h> +#include <asm/errno.h> +#include "apf27.h" +#include "crc.h" +#include "fpga.h" + +DECLARE_GLOBAL_DATA_PTR; + +/* + * Fuse bank 1 row 8 is "reserved for future use" and therefore available for + * customer use. The APF27 board uses this fuse to store the board revision: + * 0: initial board revision + * 1: first revision - Presence of the second RAM chip on the board is blown in + * fuse bank 1 row 9 bit 0 - No hardware change + * N: to be defined + */ +static u32 get_board_rev(void) +{ + struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE; + + return readl(&iim->bank[1].fuse_regs[8]); +} + +/* + * Fuse bank 1 row 9 is "reserved for future use" and therefore available for + * customer use. The APF27 board revision 1 uses the bit 0 to permanently store + * the presence of the second RAM chip + * 0: AFP27 with 1 RAM of 64 MiB + * 1: AFP27 with 2 RAM chips of 64 MiB each (128MB) + */ +static int get_num_ram_bank(void) +{ + struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE; + int nr_dram_banks = 1; + + if ((get_board_rev() > 0) && (CONFIG_NR_DRAM_BANKS > 1)) + nr_dram_banks += readl(&iim->bank[1].fuse_regs[9]) & 0x01; + else + nr_dram_banks = CONFIG_NR_DRAM_POPULATED; + + return nr_dram_banks; +} + +static void apf27_port_init(int port, u32 gpio_dr, u32 ocr1, u32 ocr2, + u32 iconfa1, u32 iconfa2, u32 iconfb1, u32 iconfb2, + u32 icr1, u32 icr2, u32 imr, u32 gpio_dir, u32 gpr, + u32 puen, u32 gius) +{ + struct gpio_port_regs *regs = (struct gpio_port_regs *)IMX_GPIO_BASE; + + writel(gpio_dr, ®s->port[port].gpio_dr); + writel(ocr1, ®s->port[port].ocr1); + writel(ocr2, ®s->port[port].ocr2); + writel(iconfa1, ®s->port[port].iconfa1); + writel(iconfa2, ®s->port[port].iconfa2); + writel(iconfb1, ®s->port[port].iconfb1); + writel(iconfb2, ®s->port[port].iconfb2); + writel(icr1, ®s->port[port].icr1); + writel(icr2, ®s->port[port].icr2); + writel(imr, ®s->port[port].imr); + writel(gpio_dir, ®s->port[port].gpio_dir); + writel(gpr, ®s->port[port].gpr); + writel(puen, ®s->port[port].puen); + writel(gius, ®s->port[port].gius); +} + +#define APF27_PORT_INIT(n) apf27_port_init(PORT##n, ACFG_DR_##n##_VAL, \ + ACFG_OCR1_##n##_VAL, ACFG_OCR2_##n##_VAL, ACFG_ICFA1_##n##_VAL, \ + ACFG_ICFA2_##n##_VAL, ACFG_ICFB1_##n##_VAL, ACFG_ICFB2_##n##_VAL, \ + ACFG_ICR1_##n##_VAL, ACFG_ICR2_##n##_VAL, ACFG_IMR_##n##_VAL, \ + ACFG_DDIR_##n##_VAL, ACFG_GPR_##n##_VAL, ACFG_PUEN_##n##_VAL, \ + ACFG_GIUS_##n##_VAL) + +static void apf27_iomux_init(void) +{ + APF27_PORT_INIT(A); + APF27_PORT_INIT(B); + APF27_PORT_INIT(C); + APF27_PORT_INIT(D); + APF27_PORT_INIT(E); + APF27_PORT_INIT(F); +} + +static int apf27_devices_init(void) +{ + int i; + unsigned int mode[] = { + PC5_PF_I2C2_DATA, + PC6_PF_I2C2_CLK, + PD17_PF_I2C_DATA, + PD18_PF_I2C_CLK, + }; + + for (i = 0; i < ARRAY_SIZE(mode); i++) + imx_gpio_mode(mode[i]); + +#ifdef CONFIG_MXC_UART + mx27_uart1_init_pins(); +#endif + +#ifdef CONFIG_FEC_MXC + mx27_fec_init_pins(); +#endif + +#ifdef CONFIG_MXC_MMC + mx27_sd2_init_pins(); + imx_gpio_mode((GPIO_PORTF | GPIO_OUT | GPIO_PUEN | GPIO_GPIO | 16)); + gpio_request(PC_PWRON, "pc_pwron"); + gpio_set_value(PC_PWRON, 1); +#endif + return 0; +} + +static void apf27_setup_csx(void) +{ + struct weim_regs *weim = (struct weim_regs *)IMX_WEIM_BASE; + + writel(ACFG_CS0U_VAL, &weim->cs0u); + writel(ACFG_CS0L_VAL, &weim->cs0l); + writel(ACFG_CS0A_VAL, &weim->cs0a); + + writel(ACFG_CS1U_VAL, &weim->cs1u); + writel(ACFG_CS1L_VAL, &weim->cs1l); + writel(ACFG_CS1A_VAL, &weim->cs1a); + + writel(ACFG_CS2U_VAL, &weim->cs2u); + writel(ACFG_CS2L_VAL, &weim->cs2l); + writel(ACFG_CS2A_VAL, &weim->cs2a); + + writel(ACFG_CS3U_VAL, &weim->cs3u); + writel(ACFG_CS3L_VAL, &weim->cs3l); + writel(ACFG_CS3A_VAL, &weim->cs3a); + + writel(ACFG_CS4U_VAL, &weim->cs4u); + writel(ACFG_CS4L_VAL, &weim->cs4l); + writel(ACFG_CS4A_VAL, &weim->cs4a); + + writel(ACFG_CS5U_VAL, &weim->cs5u); + writel(ACFG_CS5L_VAL, &weim->cs5l); + writel(ACFG_CS5A_VAL, &weim->cs5a); + + writel(ACFG_EIM_VAL, &weim->eim); +} + +static void apf27_setup_port(void) +{ + struct system_control_regs *system = + (struct system_control_regs *)IMX_SYSTEM_CTL_BASE; + + writel(ACFG_FMCR_VAL, &system->fmcr); +} + +int board_init(void) +{ + gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100; + + apf27_setup_csx(); + apf27_setup_port(); + apf27_iomux_init(); + apf27_devices_init(); +#if defined(CONFIG_FPGA) + APF27_init_fpga(); +#endif + + + return 0; +} + +int dram_init(void) +{ + gd->ram_size = get_ram_size((void *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE); + if (get_num_ram_bank() > 1) + gd->ram_size += get_ram_size((void *)PHYS_SDRAM_2, + PHYS_SDRAM_2_SIZE); + + return 0; +} + +void dram_init_banksize(void) +{ + gd->bd->bi_dram[0].start = PHYS_SDRAM_1; + gd->bd->bi_dram[0].size = get_ram_size((void *)PHYS_SDRAM_1, + PHYS_SDRAM_1_SIZE); + gd->bd->bi_dram[1].start = PHYS_SDRAM_2; + if (get_num_ram_bank() > 1) + gd->bd->bi_dram[1].size = get_ram_size((void *)PHYS_SDRAM_2, + PHYS_SDRAM_2_SIZE); + else + gd->bd->bi_dram[1].size = 0; +} + +ulong board_get_usable_ram_top(ulong total_size) +{ + ulong ramtop; + + if (get_num_ram_bank() > 1) + ramtop = PHYS_SDRAM_2 + get_ram_size((void *)PHYS_SDRAM_2, + PHYS_SDRAM_2_SIZE); + else + ramtop = PHYS_SDRAM_1 + get_ram_size((void *)PHYS_SDRAM_1, + PHYS_SDRAM_1_SIZE); + + return ramtop; +} + +int checkboard(void) +{ + printf("Board: Armadeus APF27 revision %d\n", get_board_rev()); + return 0; +} + +#ifdef CONFIG_SPL_BUILD +inline void hang(void) +{ + for (;;) + ; +} + +void board_init_f(ulong bootflag) +{ + /* + * copy ourselves from where we are running to where we were + * linked at. Use ulong pointers as all addresses involved + * are 4-byte-aligned. + */ + ulong *start_ptr, *end_ptr, *link_ptr, *run_ptr, *dst; + asm volatile ("ldr %0, =_start" : "=r"(start_ptr)); + asm volatile ("ldr %0, =_end" : "=r"(end_ptr)); + asm volatile ("ldr %0, =board_init_f" : "=r"(link_ptr)); + asm volatile ("adr %0, board_init_f" : "=r"(run_ptr)); + for (dst = start_ptr; dst < end_ptr; dst++) + *dst = *(dst+(run_ptr-link_ptr)); + + /* + * branch to nand_boot's link-time address. + */ + asm volatile("ldr pc, =nand_boot"); +} +#endif /* CONFIG_SPL_BUILD */ diff --git a/board/armadeus/apf27/apf27.h b/board/armadeus/apf27/apf27.h new file mode 100644 index 0000000..64e7e4d --- /dev/null +++ b/board/armadeus/apf27/apf27.h @@ -0,0 +1,489 @@ +/* + * Copyright (C) 2008-2013 Eric Jarrige <eric.jarrige@armadeus.org> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __APF27_H +#define __APF27_H + +/* FPGA program pin configuration */ +#define ACFG_FPGA_PWR (GPIO_PORTF | 19) /* FPGA prog pin */ +#define ACFG_FPGA_PRG (GPIO_PORTF | 11) /* FPGA prog pin */ +#define ACFG_FPGA_CLK (GPIO_PORTF | 15) /* FPGA clk pin */ +#define ACFG_FPGA_RDATA 0xD6000000 /* FPGA data addr */ +#define ACFG_FPGA_WDATA 0xD6000000 /* FPGA data addr */ +#define ACFG_FPGA_INIT (GPIO_PORTF | 12) /* FPGA init pin */ +#define ACFG_FPGA_DONE (GPIO_PORTF | 9) /* FPGA done pin */ +#define ACFG_FPGA_RW (GPIO_PORTF | 21) /* FPGA done pin */ +#define ACFG_FPGA_CS (GPIO_PORTF | 22) /* FPGA done pin */ +#define ACFG_FPGA_SUSPEND (GPIO_PORTF | 10) /* FPGA done pin */ +#define ACFG_FPGA_RESET (GPIO_PORTF | 7) /* FPGA done pin */ + +/* MMC pin */ +#define PC_PWRON (GPIO_PORTF | 16) + +/* + * MPU CLOCK source before PLL + * ACFG_CLK_FREQ (2/3 MPLL clock or ext 266 MHZ) + */ +#define ACFG_MPCTL0_VAL 0x01EF15D5 /* 399.000 MHz */ +#define ACFG_MPCTL1_VAL 0 +#define CONFIG_MPLL_FREQ 399 + +#define ACFG_CLK_FREQ (CONFIG_MPLL_FREQ*2/3) /* 266 MHz */ + +/* Serial clock source before PLL (should be named ACFG_SYSPLL_CLK_FREQ)*/ +#define ACFG_SPCTL0_VAL 0x0475206F /* 299.99937 MHz */ +#define ACFG_SPCTL1_VAL 0 +#define CONFIG_SPLL_FREQ 300 /* MHz */ + +/* ARM bus frequency (have to be a CONFIG_MPLL_FREQ ratio) */ +#define CONFIG_ARM_FREQ 399 /* up to 400 MHz */ + +/* external bus frequency (have to be a ACFG_CLK_FREQ ratio) */ +#define CONFIG_HCLK_FREQ 133 /* (ACFG_CLK_FREQ/2) */ + +#define CONFIG_PERIF1_FREQ 16 /* 16.625 MHz UART, GPT, PWM */ +#define CONFIG_PERIF2_FREQ 33 /* 33.25 MHz CSPI and SDHC */ +#define CONFIG_PERIF3_FREQ 33 /* 33.25 MHz LCD */ +#define CONFIG_PERIF4_FREQ 33 /* 33.25 MHz CSI */ +#define CONFIG_SSI1_FREQ 66 /* 66.50 MHz SSI1 */ +#define CONFIG_SSI2_FREQ 66 /* 66.50 MHz SSI2 */ +#define CONFIG_MSHC_FREQ 66 /* 66.50 MHz MSHC */ +#define CONFIG_H264_FREQ 66 /* 66.50 MHz H264 */ +#define CONFIG_CLK0_DIV 3 /* Divide CLK0 by 4 */ +#define CONFIG_CLK0_EN 1 /* CLK0 enabled */ + +/* external bus frequency (have to be a CONFIG_HCLK_FREQ ratio) */ +#define CONFIG_NFC_FREQ 44 /* NFC Clock up to 44 MHz wh 133MHz */ + +/* external serial bus frequency (have to be a CONFIG_SPLL_FREQ ratio) */ +#define CONFIG_USB_FREQ 60 /* 60 MHz */ + +/* + * SDRAM + */ +#if (ACFG_SDRAM_MBYTE_SYZE == 64) /* micron MT46H16M32LF -6 */ +/* micron 64MB */ +#define ACFG_SDRAM_NUM_COL 9 /* 8, 9, 10 or 11 + * column address bits + */ +#define ACFG_SDRAM_NUM_ROW 13 /* 11, 12 or 13 + * row address bits + */ +#define ACFG_SDRAM_REFRESH 3 /* 0=OFF 1=2048 + * 2=4096 3=8192 refresh + */ +#define ACFG_SDRAM_EXIT_PWD 25 /* ns exit power + * down delay + */ +#define ACFG_SDRAM_W2R_DELAY 1 /* write to read + * cycle delay > 0 + */ +#define ACFG_SDRAM_ROW_PRECHARGE_DELAY 18 /* ns */ +#define ACFG_SDRAM_TMRD_DELAY 2 /* Load mode register + * cycle delay 1..4 + */ +#define ACFG_SDRAM_TWR_DELAY 1 /* LPDDR: 0=2ck 1=3ck + * SDRAM: 0=1ck 1=2ck + */ +#define ACFG_SDRAM_RAS_DELAY 42 /* ns ACTIVE-to-PRECHARGE delay */ +#define ACFG_SDRAM_RRD_DELAY 12 /* ns ACTIVE-to-ACTIVE delay */ +#define ACFG_SDRAM_RCD_DELAY 18 /* ns Row to Column delay */ +#define ACFG_SDRAM_RC_DELAY 70 /* ns Row cycle delay (tRFC + * refresh to command) + */ +#define ACFG_SDRAM_CLOCK_CYCLE_CL_1 0 /* ns clock cycle time + * estimated fo CL=1 + * 0=force 3 for lpddr + */ +#define ACFG_SDRAM_PARTIAL_ARRAY_SR 0 /* 0=full 1=half 2=quater + * 3=Eighth 4=Sixteenth + */ +#define ACFG_SDRAM_DRIVE_STRENGH 0 /* 0=Full-strength 1=half + * 2=quater 3=Eighth + */ +#define ACFG_SDRAM_BURST_LENGTH 3 /* 2^N BYTES (N=0..3) */ +#define ACFG_SDRAM_SINGLE_ACCESS 0 /* 1= single access + * 0 = Burst mode + */ +#endif + +#if (ACFG_SDRAM_MBYTE_SYZE == 128) +/* micron 128MB */ +#define ACFG_SDRAM_NUM_COL 9 /* 8, 9, 10 or 11 + * column address bits + */ +#define ACFG_SDRAM_NUM_ROW 14 /* 11, 12 or 13 + * row address bits + */ +#define ACFG_SDRAM_REFRESH 3 /* 0=OFF 1=2048 + * 2=4096 3=8192 refresh + */ +#define ACFG_SDRAM_EXIT_PWD 25 /* ns exit power + * down delay + */ +#define ACFG_SDRAM_W2R_DELAY 1 /* write to read + * cycle delay > 0 + */ +#define ACFG_SDRAM_ROW_PRECHARGE_DELAY 18 /* ns */ +#define ACFG_SDRAM_TMRD_DELAY 2 /* Load mode register + * cycle delay 1..4 + */ +#define ACFG_SDRAM_TWR_DELAY 1 /* LPDDR: 0=2ck 1=3ck + * SDRAM: 0=1ck 1=2ck + */ +#define ACFG_SDRAM_RAS_DELAY 42 /* ns ACTIVE-to-PRECHARGE delay */ +#define ACFG_SDRAM_RRD_DELAY 12 /* ns ACTIVE-to-ACTIVE delay */ +#define ACFG_SDRAM_RCD_DELAY 18 /* ns Row to Column delay */ +#define ACFG_SDRAM_RC_DELAY 70 /* ns Row cycle delay (tRFC + * refresh to command) + */ +#define ACFG_SDRAM_CLOCK_CYCLE_CL_1 0 /* ns clock cycle time + * estimated fo CL=1 + * 0=force 3 for lpddr + */ +#define ACFG_SDRAM_PARTIAL_ARRAY_SR 0 /* 0=full 1=half 2=quater + * 3=Eighth 4=Sixteenth + */ +#define ACFG_SDRAM_DRIVE_STRENGH 0 /* 0=Full-strength 1=half + * 2=quater 3=Eighth + */ +#define ACFG_SDRAM_BURST_LENGTH 3 /* 2^N BYTES (N=0..3) */ +#define ACFG_SDRAM_SINGLE_ACCESS 0 /* 1= single access + * 0 = Burst mode + */ +#endif + +#if (ACFG_SDRAM_MBYTE_SYZE == 256) +/* micron 256MB */ +#define ACFG_SDRAM_NUM_COL 10 /* 8, 9, 10 or 11 + * column address bits + */ +#define ACFG_SDRAM_NUM_ROW 14 /* 11, 12 or 13 + * row address bits + */ +#define ACFG_SDRAM_REFRESH 3 /* 0=OFF 1=2048 + * 2=4096 3=8192 refresh + */ +#define ACFG_SDRAM_EXIT_PWD 25 /* ns exit power + * down delay + */ +#define ACFG_SDRAM_W2R_DELAY 1 /* write to read cycle + * delay > 0 + */ +#define ACFG_SDRAM_ROW_PRECHARGE_DELAY 18 /* ns */ +#define ACFG_SDRAM_TMRD_DELAY 2 /* Load mode register + * cycle delay 1..4 + */ +#define ACFG_SDRAM_TWR_DELAY 1 /* LPDDR: 0=2ck 1=3ck + * SDRAM: 0=1ck 1=2ck + */ +#define ACFG_SDRAM_RAS_DELAY 42 /* ns ACTIVE-to-PRECHARGE delay */ +#define ACFG_SDRAM_RRD_DELAY 12 /* ns ACTIVE-to-ACTIVE delay */ +#define ACFG_SDRAM_RCD_DELAY 18 /* ns Row to Column delay */ +#define ACFG_SDRAM_RC_DELAY 70 /* ns Row cycle delay (tRFC + * refresh to command) + */ +#define ACFG_SDRAM_CLOCK_CYCLE_CL_1 0 /* ns clock cycle time + * estimated fo CL=1 + * 0=force 3 for lpddr + */ +#define ACFG_SDRAM_PARTIAL_ARRAY_SR 0 /* 0=full 1=half 2=quater + * 3=Eighth 4=Sixteenth + */ +#define ACFG_SDRAM_DRIVE_STRENGH 0 /* 0=Full-strength + * 1=half + * 2=quater + * 3=Eighth + */ +#define ACFG_SDRAM_BURST_LENGTH 3 /* 2^N BYTES (N=0..3) */ +#define ACFG_SDRAM_SINGLE_ACCESS 0 /* 1= single access + * 0 = Burst mode + */ +#endif + +/* + * External interface + */ +/* + * CSCRxU_VAL: + * 31| x | x | x x |x x x x| x x | x | x |x x x x|16 + * |SP |WP | BCD | BCS | PSZ |PME|SYNC| DOL | + * + * 15| x x | x x x x x x | x | x x x x | x x x x |0 + * | CNC | WSC |EW | WWS | EDC | + * + * CSCRxL_VAL: + * 31| x x x x | x x x x | x x x x | x x x x |16 + * | OEA | OEN | EBWA | EBWN | + * 15|x x x x| x |x x x |x x x x| x | x | x | x | 0 + * | CSA |EBC| DSZ | CSN |PSR|CRE|WRAP|CSEN| + * + * CSCRxA_VAL: + * 31| x x x x | x x x x | x x x x | x x x x |16 + * | EBRA | EBRN | RWA | RWN | + * 15| x | x x |x x x|x x|x x|x x| x | x | x | x | 0 + * |MUM| LAH | LBN |LBA|DWW|DCT|WWU|AGE|CNC2|FCE| + */ + +/* CS0 configuration for 16 bit nor flash */ +#define ACFG_CS0U_VAL 0x0000CC03 +#define ACFG_CS0L_VAL 0xa0330D01 +#define ACFG_CS0A_VAL 0x00220800 + +#define ACFG_CS1U_VAL 0x00000f00 +#define ACFG_CS1L_VAL 0x00000D01 +#define ACFG_CS1A_VAL 0 + +#define ACFG_CS2U_VAL 0 +#define ACFG_CS2L_VAL 0 +#define ACFG_CS2A_VAL 0 + +#define ACFG_CS3U_VAL 0 +#define ACFG_CS3L_VAL 0 +#define ACFG_CS3A_VAL 0 + +#define ACFG_CS4U_VAL 0 +#define ACFG_CS4L_VAL 0 +#define ACFG_CS4A_VAL 0 + +/* FPGA 16 bit data bus */ +#define ACFG_CS5U_VAL 0x00000600 +#define ACFG_CS5L_VAL 0x00000D01 +#define ACFG_CS5A_VAL 0 + +#define ACFG_EIM_VAL 0x00002200 + + +/* + * FPGA specific settings + */ + +/* CLKO */ +#define ACFG_CCSR_VAL 0x00000305 +/* drive strength CLKO set to 2 */ +#define ACFG_DSCR10_VAL 0x00020000 +/* drive strength A1..A12 set to 2 */ +#define ACFG_DSCR3_VAL 0x02AAAAA8 +/* drive strength ctrl */ +#define ACFG_DSCR7_VAL 0x00020880 +/* drive strength data */ +#define ACFG_DSCR2_VAL 0xAAAAAAAA + + +/* + * Default configuration for GPIOs and peripherals + */ +#define ACFG_DDIR_A_VAL 0x00000000 +#define ACFG_OCR1_A_VAL 0x00000000 +#define ACFG_OCR2_A_VAL 0x00000000 +#define ACFG_ICFA1_A_VAL 0xFFFFFFFF +#define ACFG_ICFA2_A_VAL 0xFFFFFFFF +#define ACFG_ICFB1_A_VAL 0xFFFFFFFF +#define ACFG_ICFB2_A_VAL 0xFFFFFFFF +#define ACFG_DR_A_VAL 0x00000000 +#define ACFG_GIUS_A_VAL 0xFFFFFFFF +#define ACFG_ICR1_A_VAL 0x00000000 +#define ACFG_ICR2_A_VAL 0x00000000 +#define ACFG_IMR_A_VAL 0x00000000 +#define ACFG_GPR_A_VAL 0x00000000 +#define ACFG_PUEN_A_VAL 0xFFFFFFFF + +#define ACFG_DDIR_B_VAL 0x00000000 +#define ACFG_OCR1_B_VAL 0x00000000 +#define ACFG_OCR2_B_VAL 0x00000000 +#define ACFG_ICFA1_B_VAL 0xFFFFFFFF +#define ACFG_ICFA2_B_VAL 0xFFFFFFFF +#define ACFG_ICFB1_B_VAL 0xFFFFFFFF +#define ACFG_ICFB2_B_VAL 0xFFFFFFFF +#define ACFG_DR_B_VAL 0x00000000 +#define ACFG_GIUS_B_VAL 0xFF3FFFF0 +#define ACFG_ICR1_B_VAL 0x00000000 +#define ACFG_ICR2_B_VAL 0x00000000 +#define ACFG_IMR_B_VAL 0x00000000 +#define ACFG_GPR_B_VAL 0x00000000 +#define ACFG_PUEN_B_VAL 0xFFFFFFFF + +#define ACFG_DDIR_C_VAL 0x00000000 +#define ACFG_OCR1_C_VAL 0x00000000 +#define ACFG_OCR2_C_VAL 0x00000000 +#define ACFG_ICFA1_C_VAL 0xFFFFFFFF +#define ACFG_ICFA2_C_VAL 0xFFFFFFFF +#define ACFG_ICFB1_C_VAL 0xFFFFFFFF +#define ACFG_ICFB2_C_VAL 0xFFFFFFFF +#define ACFG_DR_C_VAL 0x00000000 +#define ACFG_GIUS_C_VAL 0xFFFFC07F +#define ACFG_ICR1_C_VAL 0x00000000 +#define ACFG_ICR2_C_VAL 0x00000000 +#define ACFG_IMR_C_VAL 0x00000000 +#define ACFG_GPR_C_VAL 0x00000000 +#define ACFG_PUEN_C_VAL 0xFFFFFF87 + +#define ACFG_DDIR_D_VAL 0x00000000 +#define ACFG_OCR1_D_VAL 0x00000000 +#define ACFG_OCR2_D_VAL 0x00000000 +#define ACFG_ICFA1_D_VAL 0xFFFFFFFF +#define ACFG_ICFA2_D_VAL 0xFFFFFFFF +#define ACFG_ICFB1_D_VAL 0xFFFFFFFF +#define ACFG_ICFB2_D_VAL 0xFFFFFFFF +#define ACFG_DR_D_VAL 0x00000000 +#define ACFG_GIUS_D_VAL 0xFFFFFFFF +#define ACFG_ICR1_D_VAL 0x00000000 +#define ACFG_ICR2_D_VAL 0x00000000 +#define ACFG_IMR_D_VAL 0x00000000 +#define ACFG_GPR_D_VAL 0x00000000 +#define ACFG_PUEN_D_VAL 0xFFFFFFFF + +#define ACFG_DDIR_E_VAL 0x00000000 +#define ACFG_OCR1_E_VAL 0x00000000 +#define ACFG_OCR2_E_VAL 0x00000000 +#define ACFG_ICFA1_E_VAL 0xFFFFFFFF +#define ACFG_ICFA2_E_VAL 0xFFFFFFFF +#define ACFG_ICFB1_E_VAL 0xFFFFFFFF +#define ACFG_ICFB2_E_VAL 0xFFFFFFFF +#define ACFG_DR_E_VAL 0x00000000 +#define ACFG_GIUS_E_VAL 0xFCFFCCF8 +#define ACFG_ICR1_E_VAL 0x00000000 +#define ACFG_ICR2_E_VAL 0x00000000 +#define ACFG_IMR_E_VAL 0x00000000 +#define ACFG_GPR_E_VAL 0x00000000 +#define ACFG_PUEN_E_VAL 0xFFFFFFFF + +#define ACFG_DDIR_F_VAL 0x00000000 +#define ACFG_OCR1_F_VAL 0x00000000 +#define ACFG_OCR2_F_VAL 0x00000000 +#define ACFG_ICFA1_F_VAL 0xFFFFFFFF +#define ACFG_ICFA2_F_VAL 0xFFFFFFFF +#define ACFG_ICFB1_F_VAL 0xFFFFFFFF +#define ACFG_ICFB2_F_VAL 0xFFFFFFFF +#define ACFG_DR_F_VAL 0x00000000 +#define ACFG_GIUS_F_VAL 0xFF7F8000 +#define ACFG_ICR1_F_VAL 0x00000000 +#define ACFG_ICR2_F_VAL 0x00000000 +#define ACFG_IMR_F_VAL 0x00000000 +#define ACFG_GPR_F_VAL 0x00000000 +#define ACFG_PUEN_F_VAL 0xFFFFFFFF + +/* Enforce DDR signal strengh & enable USB/PP/DMA burst override bits */ +#define ACFG_GPCR_VAL 0x0003000F + +#define ACFG_ESDMISC_VAL ESDMISC_LHD+ESDMISC_MDDREN + +/* FMCR select num LPDDR RAMs and nand 16bits, 2KB pages */ +#if (CONFIG_NR_DRAM_BANKS == 1) +#define ACFG_FMCR_VAL 0xFFFFFFF9 +#elif (CONFIG_NR_DRAM_BANKS == 2) +#define ACFG_FMCR_VAL 0xFFFFFFFB +#endif + +#define ACFG_AIPI1_PSR0_VAL 0x20040304 +#define ACFG_AIPI1_PSR1_VAL 0xDFFBFCFB +#define ACFG_AIPI2_PSR0_VAL 0x00000000 +#define ACFG_AIPI2_PSR1_VAL 0xFFFFFFFF + +/* PCCR enable DMA FEC I2C1 IIM SDHC1 */ +#define ACFG_PCCR0_VAL 0x05070410 +#define ACFG_PCCR1_VAL 0xA14A0608 + +/* + * From here, there should not be any user configuration. + * All Equations are automatic + */ + +/* fixme none integer value (7.5ns) => 2*hclock = 15ns */ +#define ACFG_2XHCLK_LGTH (2000/CONFIG_HCLK_FREQ) /* ns */ + +/* USB 60 MHz ; ARM up to 400; HClK up to 133MHz*/ +#define CSCR_MASK 0x0300800D + +#define ACFG_CSCR_VAL \ + (CSCR_MASK \ + |((((CONFIG_SPLL_FREQ/CONFIG_USB_FREQ)-1)&0x07) << 28) \ + |((((CONFIG_MPLL_FREQ/CONFIG_ARM_FREQ)-1)&0x03) << 12) \ + |((((ACFG_CLK_FREQ/CONFIG_HCLK_FREQ)-1)&0x03) << 8)) + +/* SSIx CLKO NFC H264 MSHC */ +#define ACFG_PCDR0_VAL\ + (((((ACFG_CLK_FREQ/CONFIG_MSHC_FREQ)-1)&0x3F)<<0) \ + |((((CONFIG_HCLK_FREQ/CONFIG_NFC_FREQ)-1)&0x0F)<<6) \ + |(((((ACFG_CLK_FREQ/CONFIG_H264_FREQ)-2)*2)&0x3F)<<10)\ + |(((((ACFG_CLK_FREQ/CONFIG_SSI1_FREQ)-2)*2)&0x3F)<<16)\ + |(((CONFIG_CLK0_DIV)&0x07)<<22)\ + |(((CONFIG_CLK0_EN)&0x01)<<25)\ + |(((((ACFG_CLK_FREQ/CONFIG_SSI2_FREQ)-2)*2)&0x3F)<<26)) + +/* PERCLKx */ +#define ACFG_PCDR1_VAL\ + (((((ACFG_CLK_FREQ/CONFIG_PERIF1_FREQ)-1)&0x3F)<<0) \ + |((((ACFG_CLK_FREQ/CONFIG_PERIF2_FREQ)-1)&0x3F)<<8) \ + |((((ACFG_CLK_FREQ/CONFIG_PERIF3_FREQ)-1)&0x3F)<<16) \ + |((((ACFG_CLK_FREQ/CONFIG_PERIF4_FREQ)-1)&0x3F)<<24)) + +/* SDRAM controller programming Values */ +#if (((2*ACFG_SDRAM_CLOCK_CYCLE_CL_1) > (3*ACFG_2XHCLK_LGTH)) || \ + (ACFG_SDRAM_CLOCK_CYCLE_CL_1 < 1)) +#define REG_FIELD_SCL_VAL 3 +#define REG_FIELD_SCLIMX_VAL 0 +#else +#define REG_FIELD_SCL_VAL\ + ((2*ACFG_SDRAM_CLOCK_CYCLE_CL_1+ACFG_2XHCLK_LGTH-1)/ \ + ACFG_2XHCLK_LGTH) +#define REG_FIELD_SCLIMX_VAL REG_FIELD_SCL_VAL +#endif + +#if ((2*ACFG_SDRAM_RC_DELAY) > (16*ACFG_2XHCLK_LGTH)) +#define REG_FIELD_SRC_VAL 0 +#else +#define REG_FIELD_SRC_VAL\ + ((2*ACFG_SDRAM_RC_DELAY+ACFG_2XHCLK_LGTH-1)/ \ + ACFG_2XHCLK_LGTH) +#endif + +/* TBD Power down timer ; PRCT Bit Field Encoding; burst length 8 ; FP = 0*/ +#define REG_ESDCTL_BASE_CONFIG (0x80020485\ + | (((ACFG_SDRAM_NUM_ROW-11)&0x7)<<24)\ + | (((ACFG_SDRAM_NUM_COL-8)&0x3)<<20)\ + | (((ACFG_SDRAM_REFRESH)&0x7)<<13)) + +#define ACFG_NORMAL_RW_CMD ((0x0<<28)+REG_ESDCTL_BASE_CONFIG) +#define ACFG_PRECHARGE_CMD ((0x1<<28)+REG_ESDCTL_BASE_CONFIG) +#define ACFG_AUTOREFRESH_CMD ((0x2<<28)+REG_ESDCTL_BASE_CONFIG) +#define ACFG_SET_MODE_REG_CMD ((0x3<<28)+REG_ESDCTL_BASE_CONFIG) + +/* ESDRAMC Configuration Registers : force CL=3 to lpddr */ +#define ACFG_SDRAM_ESDCFG_REGISTER_VAL (0x0\ + | (((((2*ACFG_SDRAM_EXIT_PWD+ACFG_2XHCLK_LGTH-1)/ \ + ACFG_2XHCLK_LGTH)-1)&0x3)<<21)\ + | (((ACFG_SDRAM_W2R_DELAY-1)&0x1)<<20)\ + | (((((2*ACFG_SDRAM_ROW_PRECHARGE_DELAY+ \ + ACFG_2XHCLK_LGTH-1)/ACFG_2XHCLK_LGTH)-1)&0x3)<<18) \ + | (((ACFG_SDRAM_TMRD_DELAY-1)&0x3)<<16)\ + | (((ACFG_SDRAM_TWR_DELAY)&0x1)<<15)\ + | (((((2*ACFG_SDRAM_RAS_DELAY+ACFG_2XHCLK_LGTH-1)/ \ + ACFG_2XHCLK_LGTH)-1)&0x7)<<12) \ + | (((((2*ACFG_SDRAM_RRD_DELAY+ACFG_2XHCLK_LGTH-1)/ \ + ACFG_2XHCLK_LGTH)-1)&0x3)<<10) \ + | (((REG_FIELD_SCLIMX_VAL)&0x3)<<8)\ + | (((((2*ACFG_SDRAM_RCD_DELAY+ACFG_2XHCLK_LGTH-1)/ \ + ACFG_2XHCLK_LGTH)-1)&0x7)<<4) \ + | (((REG_FIELD_SRC_VAL)&0x0F)<<0)) + +/* Issue Mode register Command to SDRAM */ +#define ACFG_SDRAM_MODE_REGISTER_VAL\ + ((((ACFG_SDRAM_BURST_LENGTH)&0x7)<<(0))\ + | (((REG_FIELD_SCL_VAL)&0x7)<<(4))\ + | ((0)<<(3)) /* sequentiql access */ \ + /*| (((ACFG_SDRAM_SINGLE_ACCESS)&0x1)<<(1))*/) + +/* Issue Extended Mode register Command to SDRAM */ +#define ACFG_SDRAM_EXT_MODE_REGISTER_VAL\ + ((ACFG_SDRAM_PARTIAL_ARRAY_SR<<0)\ + | (ACFG_SDRAM_DRIVE_STRENGH<<(5))\ + | (1<<(ACFG_SDRAM_NUM_COL+ACFG_SDRAM_NUM_ROW+1+2))) + +/* Issue Precharge all Command to SDRAM */ +#define ACFG_SDRAM_PRECHARGE_ALL_VAL (1<<10) + +#endif /* __APF27_H */ diff --git a/board/armadeus/apf27/fpga.c b/board/armadeus/apf27/fpga.c new file mode 100644 index 0000000..0c08c06 --- /dev/null +++ b/board/armadeus/apf27/fpga.c @@ -0,0 +1,224 @@ +/* + * (C) Copyright 2002-2013 + * Eric Jarrige <eric.jarrige@armadeus.org> + * + * based on the files by + * Rich Ireland, Enterasys Networks, rireland@enterasys.com + * and + * Keith Outwater, keith_outwater@mvis.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include <common.h> + +#include <asm/arch/imx-regs.h> +#include <asm/gpio.h> +#include <asm/io.h> +#include <command.h> +#include <config.h> +#include "fpga.h" +#include <spartan3.h> +#include "apf27.h" + +/* + * Note that these are pointers to code that is in Flash. They will be + * relocated at runtime. + * Spartan2 code is used to download our Spartan 3 :) code is compatible. + * Just take care about the file size + */ +Xilinx_Spartan3_Slave_Parallel_fns fpga_fns = { + fpga_pre_fn, + fpga_pgm_fn, + fpga_init_fn, + NULL, + fpga_done_fn, + fpga_clk_fn, + fpga_cs_fn, + fpga_wr_fn, + fpga_rdata_fn, + fpga_wdata_fn, + fpga_busy_fn, + fpga_abort_fn, + fpga_post_fn, +}; + +Xilinx_desc fpga[CONFIG_FPGA_COUNT] = { + {Xilinx_Spartan3, + slave_parallel, + 1196128l/8, + (void *)&fpga_fns, + 0, + "3s200aft256"} +}; + +/* + * Initialize GPIO port B before download + */ +int fpga_pre_fn(int cookie) +{ + /* Initialize GPIO pins */ + gpio_set_value(ACFG_FPGA_PWR, 1); + imx_gpio_mode(ACFG_FPGA_INIT | GPIO_IN | GPIO_PUEN | GPIO_GPIO); + imx_gpio_mode(ACFG_FPGA_DONE | GPIO_IN | GPIO_PUEN | GPIO_GPIO); + imx_gpio_mode(ACFG_FPGA_PRG | GPIO_OUT | GPIO_PUEN | GPIO_GPIO); + imx_gpio_mode(ACFG_FPGA_CLK | GPIO_OUT | GPIO_PUEN | GPIO_GPIO); + imx_gpio_mode(ACFG_FPGA_RW | GPIO_OUT | GPIO_PUEN | GPIO_GPIO); + imx_gpio_mode(ACFG_FPGA_CS | GPIO_OUT | GPIO_PUEN | GPIO_GPIO); + imx_gpio_mode(ACFG_FPGA_SUSPEND|GPIO_OUT|GPIO_PUEN|GPIO_GPIO); + gpio_set_value(ACFG_FPGA_RESET, 1); + imx_gpio_mode(ACFG_FPGA_RESET | GPIO_OUT | GPIO_PUEN | GPIO_GPIO); + imx_gpio_mode(ACFG_FPGA_PWR | GPIO_OUT | GPIO_PUEN | GPIO_GPIO); + gpio_set_value(ACFG_FPGA_PRG, 1); + gpio_set_value(ACFG_FPGA_CLK, 1); + gpio_set_value(ACFG_FPGA_RW, 1); + gpio_set_value(ACFG_FPGA_CS, 1); + gpio_set_value(ACFG_FPGA_SUSPEND, 0); + gpio_set_value(ACFG_FPGA_PWR, 0); + udelay(30000); /*wait until supply started*/ + + return cookie; +} + +/* + * Set the FPGA's active-low program line to the specified level + */ +int fpga_pgm_fn(int assert, int flush, int cookie) +{ + debug("%s:%d: FPGA PROGRAM %s", __func__, __LINE__, + assert ? "high" : "low"); + gpio_set_value(ACFG_FPGA_PRG, !assert); + return assert; +} + +/* + * Set the FPGA's active-high clock line to the specified level + */ +int fpga_clk_fn(int assert_clk, int flush, int cookie) +{ + debug("%s:%d: FPGA CLOCK %s", __func__, __LINE__, + assert_clk ? "high" : "low"); + gpio_set_value(ACFG_FPGA_CLK, !assert_clk); + return assert_clk; +} + +/* + * Test the state of the active-low FPGA INIT line. Return 1 on INIT + * asserted (low). + */ +int fpga_init_fn(int cookie) +{ + int value; + debug("%s:%d: INIT check... ", __func__, __LINE__); + value = gpio_get_value(ACFG_FPGA_INIT); + /* printf("init value read %x",value); */ +#ifdef CONFIG_SYS_FPGA_IS_PROTO + return value; +#else + return !value; +#endif +} + +/* + * Test the state of the active-high FPGA DONE pin + */ +int fpga_done_fn(int cookie) +{ + debug("%s:%d: DONE check... %s", __func__, __LINE__, + gpio_get_value(ACFG_FPGA_DONE) ? "high" : "low"); + return gpio_get_value(ACFG_FPGA_DONE) ? FPGA_SUCCESS : FPGA_FAIL; +} + +/* + * Set the FPGA's wr line to the specified level + */ +int fpga_wr_fn(int assert_write, int flush, int cookie) +{ + debug("%s:%d: FPGA RW... %s ", __func__, __LINE__, + assert_write ? "high" : "low"); + gpio_set_value(ACFG_FPGA_RW, !assert_write); + return assert_write; +} + +int fpga_cs_fn(int assert_cs, int flush, int cookie) +{ + debug("%s:%d: FPGA CS %s ", __func__, __LINE__, + assert_cs ? "high" : "low"); + gpio_set_value(ACFG_FPGA_CS, !assert_cs); + return assert_cs; +} + +int fpga_rdata_fn(unsigned char *data, int cookie) +{ + debug("%s:%d: FPGA READ DATA %02X ", __func__, __LINE__, + *((char *)ACFG_FPGA_RDATA)); + *data = (unsigned char) + ((*((unsigned short *)ACFG_FPGA_RDATA))&0x00FF); + return *data; +} + +int fpga_wdata_fn(unsigned char data, int flush, int cookie) +{ + debug("%s:%d: FPGA WRITE DATA %02X ", __func__, __LINE__, + data); + *((unsigned short *)ACFG_FPGA_WDATA) = data; + return data; +} + +int fpga_abort_fn(int cookie) +{ + return fpga_post_fn(cookie); +} + + +int fpga_busy_fn(int cookie) +{ + return 1; +} + +int fpga_post_fn(int cookie) +{ + debug("%s:%d: FPGA POST ", __func__, __LINE__); + + imx_gpio_mode(ACFG_FPGA_RW | GPIO_PF | GPIO_PUEN); + imx_gpio_mode(ACFG_FPGA_CS | GPIO_PF | GPIO_PUEN); + imx_gpio_mode(ACFG_FPGA_CLK | GPIO_PF | GPIO_PUEN); + gpio_set_value(ACFG_FPGA_PRG, 1); + gpio_set_value(ACFG_FPGA_RESET, 0); + imx_gpio_mode(ACFG_FPGA_RESET | GPIO_OUT | GPIO_PUEN | GPIO_GPIO); + return cookie; +} + +void apf27_fpga_setup(void) +{ + struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; + struct system_control_regs *system = + (struct system_control_regs *)IMX_SYSTEM_CTL_BASE; + + /* Configure FPGA CLKO */ + writel(ACFG_CCSR_VAL, &pll->ccsr); + + /* Configure strentgh for FPGA */ + writel(ACFG_DSCR10_VAL, &system->dscr10); + writel(ACFG_DSCR3_VAL, &system->dscr3); + writel(ACFG_DSCR7_VAL, &system->dscr7); + writel(ACFG_DSCR2_VAL, &system->dscr2); +} + +/* + * Initialize the fpga. Return 1 on success, 0 on failure. + */ +void APF27_init_fpga(void) +{ + int i; + + apf27_fpga_setup(); + + fpga_init(); + + for (i = 0; i < CONFIG_FPGA_COUNT; i++) { + debug("%s:%d: Adding fpga %d\n", __func__, __LINE__, i); + fpga_add(fpga_xilinx, &fpga[i]); + } + + return; +} diff --git a/board/armadeus/apf27/fpga.h b/board/armadeus/apf27/fpga.h new file mode 100644 index 0000000..84a5244 --- /dev/null +++ b/board/armadeus/apf27/fpga.h @@ -0,0 +1,25 @@ +/* + * (C) Copyright 2002-2013 + * Eric Jarrige <eric.jarrige@armadeus.org> + * + * based on the files by + * Rich Ireland, Enterasys Networks, rireland@enterasys.com + * and + * Keith Outwater, keith_outwater@mvis.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ +extern void APF27_init_fpga(void); + +extern int fpga_pre_fn(int cookie); +extern int fpga_pgm_fn(int assert_pgm, int flush, int cookie); +extern int fpga_cs_fn(int assert_cs, int flush, int cookie); +extern int fpga_init_fn(int cookie); +extern int fpga_done_fn(int cookie); +extern int fpga_clk_fn(int assert_clk, int flush, int cookie); +extern int fpga_wr_fn(int assert_write, int flush, int cookie); +extern int fpga_rdata_fn(unsigned char *data, int cookie); +extern int fpga_wdata_fn(unsigned char data, int flush, int cookie); +extern int fpga_abort_fn(int cookie); +extern int fpga_post_fn(int cookie); +extern int fpga_busy_fn(int cookie); diff --git a/board/armadeus/apf27/lowlevel_init.S b/board/armadeus/apf27/lowlevel_init.S new file mode 100644 index 0000000..4293cb1 --- /dev/null +++ b/board/armadeus/apf27/lowlevel_init.S @@ -0,0 +1,168 @@ +/* + * (C) Copyright 2013 Philippe Reynes <tremyfr@yahoo.fr> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <config.h> +#include <generated/asm-offsets.h> +#include <version.h> +#include <asm/macro.h> +#include <asm/arch/imx-regs.h> +#include "apf27.h" + + .macro init_aipi + /* + * setup AIPI1 and AIPI2 + */ + write32 AIPI1_PSR0, ACFG_AIPI1_PSR0_VAL + write32 AIPI1_PSR1, ACFG_AIPI1_PSR1_VAL + write32 AIPI2_PSR0, ACFG_AIPI2_PSR0_VAL + write32 AIPI2_PSR1, ACFG_AIPI2_PSR1_VAL + + /* Change SDRAM signal strengh */ + ldr r0, =GPCR + ldr r1, =ACFG_GPCR_VAL + ldr r5, [r0] + orr r5, r5, r1 + str r5, [r0] + + .endm /* init_aipi */ + + .macro init_clock + ldr r0, =CSCR + /* disable MPLL/SPLL first */ + ldr r1, [r0] + bic r1, r1, #(CSCR_MPEN|CSCR_SPEN) + str r1, [r0] + + /* + * pll clock initialization predefined in apf27.h + */ + write32 MPCTL0, ACFG_MPCTL0_VAL + write32 SPCTL0, ACFG_SPCTL0_VAL + + write32 CSCR, ACFG_CSCR_VAL|CSCR_MPLL_RESTART|CSCR_SPLL_RESTART + + /* + * add some delay here + */ + mov r1, #0x1000 + 1: subs r1, r1, #0x1 + bne 1b + + /* peripheral clock divider */ + write32 PCDR0, ACFG_PCDR0_VAL + write32 PCDR1, ACFG_PCDR1_VAL + + /* Configure PCCR0 and PCCR1 */ + write32 PCCR0, ACFG_PCCR0_VAL + write32 PCCR1, ACFG_PCCR1_VAL + + .endm /* init_clock */ + + .macro init_ddr + /* wait for SDRAM/LPDDR ready (SDRAMRDY) */ + ldr r0, =IMX_ESD_BASE + ldr r4, =ESDMISC_SDRAM_RDY +2: ldr r1, [r0, #ESDMISC_ROF] + ands r1, r1, r4 + bpl 2b + + /* LPDDR Soft Reset Mobile/Low Power DDR SDRAM. */ + ldr r0, =IMX_ESD_BASE + ldr r4, =ACFG_ESDMISC_VAL + orr r1, r4, #ESDMISC_MDDR_DL_RST + str r1, [r0, #ESDMISC_ROF] + + /* Hold for more than 200ns */ + ldr r1, =0x10000 +1: subs r1, r1, #0x1 + bne 1b + + str r4, [r0] + + ldr r0, =IMX_ESD_BASE + ldr r1, =ACFG_SDRAM_ESDCFG_REGISTER_VAL + str r1, [r0, #ESDCFG0_ROF] + + ldr r0, =IMX_ESD_BASE + ldr r1, =ACFG_PRECHARGE_CMD + str r1, [r0, #ESDCTL0_ROF] + + /* write8(0xA0001000, any value) */ + ldr r1, =PHYS_SDRAM_1+ACFG_SDRAM_PRECHARGE_ALL_VAL + strb r2, [r1] + + ldr r1, =ACFG_AUTOREFRESH_CMD + str r1, [r0, #ESDCTL0_ROF] + + ldr r4, =PHYS_SDRAM_1 /* CSD0 base address */ + + ldr r6,=0x7 /* load loop counter */ +1: str r5,[r4] /* run auto-refresh cycle to array 0 */ + subs r6,r6,#1 + bne 1b + + ldr r1, =ACFG_SET_MODE_REG_CMD + str r1, [r0, #ESDCTL0_ROF] + + /* set standard mode register */ + ldr r4, = PHYS_SDRAM_1+ACFG_SDRAM_MODE_REGISTER_VAL + strb r2, [r4] + + /* set extended mode register */ + ldr r4, =PHYS_SDRAM_1+ACFG_SDRAM_EXT_MODE_REGISTER_VAL + strb r5, [r4] + + ldr r1, =ACFG_NORMAL_RW_CMD + str r1, [r0, #ESDCTL0_ROF] + + /* 2nd sdram */ + ldr r0, =IMX_ESD_BASE + ldr r1, =ACFG_SDRAM_ESDCFG_REGISTER_VAL + str r1, [r0, #ESDCFG1_ROF] + + ldr r0, =IMX_ESD_BASE + ldr r1, =ACFG_PRECHARGE_CMD + str r1, [r0, #ESDCTL1_ROF] + + /* write8(0xB0001000, any value) */ + ldr r1, =PHYS_SDRAM_2+ACFG_SDRAM_PRECHARGE_ALL_VAL + strb r2, [r1] + + ldr r1, =ACFG_AUTOREFRESH_CMD + str r1, [r0, #ESDCTL1_ROF] + + ldr r4, =PHYS_SDRAM_2 /* CSD1 base address */ + + ldr r6,=0x7 /* load loop counter */ +1: str r5,[r4] /* run auto-refresh cycle to array 0 */ + subs r6,r6,#1 + bne 1b + + ldr r1, =ACFG_SET_MODE_REG_CMD + str r1, [r0, #ESDCTL1_ROF] + + /* set standard mode register */ + ldr r4, =PHYS_SDRAM_2+ACFG_SDRAM_MODE_REGISTER_VAL + strb r2, [r4] + + /* set extended mode register */ + ldr r4, =PHYS_SDRAM_2+ACFG_SDRAM_EXT_MODE_REGISTER_VAL + strb r2, [r4] + + ldr r1, =ACFG_NORMAL_RW_CMD + str r1, [r0, #ESDCTL1_ROF] + .endm /* init_ddr */ + +.globl lowlevel_init +lowlevel_init: + + init_aipi + init_clock +#ifdef CONFIG_SPL_BUILD + init_ddr +#endif + + mov pc, lr |