From: Zhong Hongbo bocui107@gmail.com
Adopt the new SPL framework to implement the SPL booting of the nand flash for S3C6400.
Signed-off-by: Zhong Hongbo bocui107@gmail.com --- Change for V2: - seprate some code. --- arch/arm/cpu/arm1176/start.S | 16 +--- board/samsung/smdk6400/Makefile | 29 +++++- board/samsung/smdk6400/lowlevel_init.S | 18 ++-- board/samsung/smdk6400/smdk6400_nand_spl.c | 61 ++++++++++-- board/samsung/smdk6400/tools/mksmdk6400_image.c | 117 +++++++++++++++++++++++ drivers/mtd/nand/s3c64xx.c | 4 +- include/configs/smdk6400.h | 21 +++-- 7 files changed, 219 insertions(+), 47 deletions(-) create mode 100644 board/samsung/smdk6400/tools/mksmdk6400_image.c
diff --git a/arch/arm/cpu/arm1176/start.S b/arch/arm/cpu/arm1176/start.S index 848144a..26a3533 100644 --- a/arch/arm/cpu/arm1176/start.S +++ b/arch/arm/cpu/arm1176/start.S @@ -51,7 +51,7 @@
.globl _start _start: b reset -#ifndef CONFIG_NAND_SPL +#ifndef CONFIG_SPL_BUILD ldr pc, _undefined_instruction ldr pc, _software_interrupt ldr pc, _prefetch_abort @@ -164,7 +164,7 @@ cpu_init_crit: * When booting from NAND - it has definitely been a reset, so, no need * to flush caches and disable the MMU */ -#ifndef CONFIG_NAND_SPL +#ifndef CONFIG_SPL_BUILD /* * flush v4 I/D caches */ @@ -356,21 +356,14 @@ clbss_l:str r2, [r0] /* clear loop... */ cmp r0, r1 bne clbss_l
-#ifndef CONFIG_NAND_SPL bl coloured_LED_init bl red_led_on #endif -#endif
/* * We are done. Do not return, instead branch to second part of board * initialization, now running from RAM. */ -#ifdef CONFIG_NAND_SPL - ldr pc, _nand_boot - -_nand_boot: .word nand_boot -#else ldr r0, _board_init_r_ofs adr r1, _start add lr, r0, r1 @@ -383,7 +376,6 @@ _nand_boot: .word nand_boot
_board_init_r_ofs: .word board_init_r - _start -#endif
_rel_dyn_start_ofs: .word __rel_dyn_start - _start @@ -397,7 +389,7 @@ _mmu_table_base: .word mmu_table #endif
-#ifndef CONFIG_NAND_SPL +#ifndef CONFIG_SPL_BUILD /* * we assume that cache operation is done before. (eg. cleanup_before_linux()) * actually, we don't need to do anything about cache if not use d-cache in @@ -575,4 +567,4 @@ fiq: get_bad_stack bad_save_user_regs bl do_fiq -#endif /* CONFIG_NAND_SPL */ +#endif /* CONFIG_SPL_BUILD */ diff --git a/board/samsung/smdk6400/Makefile b/board/samsung/smdk6400/Makefile index 645c8e2..f7fa667 100644 --- a/board/samsung/smdk6400/Makefile +++ b/board/samsung/smdk6400/Makefile @@ -28,15 +28,34 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).o
+ifndef CONFIG_SPL_BUILD COBJS-y := smdk6400.o +endif + SOBJS := lowlevel_init.o mem_init.o
-SRCS := $(SOBJS:.o=.S) $(COBJS-y:.o=.c) -OBJS := $(addprefix $(obj),$(COBJS-y)) -SOBJS := $(addprefix $(obj),$(SOBJS)) +ifdef CONFIG_SPL_BUILD +COBJS-y += smdk6400_nand_spl.o +endif + +SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS-y) $(SOBJS)) + +ALL := $(obj).depend $(LIB) + +ifdef CONFIG_SPL_BUILD +ALL += $(OBJTREE)/tools/mk$(BOARD)spl +endif + +all: $(ALL) + +$(LIB): $(OBJS) + $(call cmd_link_o_target, $(OBJS))
-$(LIB): $(obj).depend $(SOBJS) $(OBJS) - $(call cmd_link_o_target, $(SOBJS) $(OBJS)) +ifdef CONFIG_SPL_BUILD +$(OBJTREE)/tools/mk$(BOARD)spl: tools/mksmdk6400_image.c + $(HOSTCC) tools/mksmdk6400_image.c -o $(OBJTREE)/tools/mk$(BOARD)spl +endif
#########################################################################
diff --git a/board/samsung/smdk6400/lowlevel_init.S b/board/samsung/smdk6400/lowlevel_init.S index 1142be1..6cc7567 100644 --- a/board/samsung/smdk6400/lowlevel_init.S +++ b/board/samsung/smdk6400/lowlevel_init.S @@ -83,18 +83,12 @@ lowlevel_init: str r3, [r0, #oVECTADDR] str r3, [r1, #oVECTADDR]
+#ifdef CONFIG_SPL_BUILD /* init system clock */ bl system_clock_init
-#ifndef CONFIG_NAND_SPL - /* for UART */ - bl uart_asm_init -#endif - -#ifdef CONFIG_BOOT_NAND /* simple init for NAND */ bl nand_asm_init -#endif
/* Memory subsystem address 0x7e00f120 */ ldr r0, =ELFIN_MEM_SYS_CFG @@ -104,6 +98,12 @@ lowlevel_init: str r1, [r0]
bl mem_ctrl_asm_init +#endif + +#ifndef CONFIG_SPL_BUILD + /* for UART */ + bl uart_asm_init +#endif
/* Wakeup support. Don't know if it's going to be used, untested. */ ldr r0, =(ELFIN_CLOCK_POWER_BASE + RST_STAT_OFFSET) @@ -243,7 +243,7 @@ wait_for_async: mov pc, lr
-#ifndef CONFIG_NAND_SPL +#ifndef CONFIG_SPL_BUILD /* * uart_asm_init: Initialize UART's pins */ @@ -255,7 +255,7 @@ uart_asm_init: mov pc, lr #endif
-#ifdef CONFIG_BOOT_NAND +#ifdef CONFIG_SPL_BUILD /* * NAND Interface init for SMDK6400 */ diff --git a/board/samsung/smdk6400/smdk6400_nand_spl.c b/board/samsung/smdk6400/smdk6400_nand_spl.c index a023284..34649a2 100644 --- a/board/samsung/smdk6400/smdk6400_nand_spl.c +++ b/board/samsung/smdk6400/smdk6400_nand_spl.c @@ -1,13 +1,6 @@ /* - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Marius Groeger mgroeger@sysgo.de - * - * (C) Copyright 2002 - * David Mueller, ELSOFT AG, d.mueller@elsoft.ch - * - * (C) Copyright 2008 - * Guennadi Liakhovetki, DENX Software Engineering, lg@denx.de + * Copyright (C) 2012 + * Zhong Hongbo bocui107@gmail.com * * See file CREDITS for list of people who contributed to this * project. @@ -29,9 +22,55 @@ */
#include <common.h> +#include <config.h> +#include <nand.h>
void board_init_f(unsigned long bootflag) { - relocate_code(CONFIG_SYS_TEXT_BASE - TOTAL_MALLOC_LEN, NULL, - CONFIG_SYS_TEXT_BASE); + /* + * We call relocate_code() with relocation target same as the + * CONFIG_SYS_SPL_TEXT_BASE. This will result in relocation getting + * skipped. Instead, only .bss initialization will happen. That's + * all we need + */ + relocate_code(CONFIG_SPL_STACK, NULL, CONFIG_SPL_TEXT_BASE); +} + +void board_init_r(gd_t *id, ulong dest_addr) +{ + __attribute__((noreturn)) void (*uboot)(void); + + spl_nand_copy(); + /* + * Jump to U-Boot image + */ + uboot = (void *)CONFIG_SYS_UBOOT_BASE; + (*uboot)(); + /* Never returns Here */ +} + +void spl_nand_copy(void) +{ + /* + * Init board specific nand support + */ + nand_init(); + /* + * Load U-Boot image from NAND into RAM + */ + nand_spl_load_image(CONFIG_SYS_NAND_U_BOOT_OFFS, + CONFIG_SYS_NAND_U_BOOT_SIZE, + (void *)CONFIG_SYS_UBOOT_BASE); + +#ifdef CONFIG_NAND_ENV_DST + nand_spl_load_image(CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, + (void *)CONFIG_NAND_ENV_DST); + +#ifdef CONFIG_ENV_OFFSET_REDUND + nand_spl_load_image(CONFIG_ENV_OFFSET_REDUND, CONFIG_ENV_SIZE, + (void *)CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE); +#endif +#endif + + nand_deselect(); } diff --git a/board/samsung/smdk6400/tools/mksmdk6400_image.c b/board/samsung/smdk6400/tools/mksmdk6400_image.c new file mode 100644 index 0000000..1a51913 --- /dev/null +++ b/board/samsung/smdk6400/tools/mksmdk6400_image.c @@ -0,0 +1,117 @@ +/* + * Copyright (C) 2011 Samsung Electronics + * + * 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 <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> +#include <errno.h> +#include <string.h> +#include <sys/stat.h> + +#define CHECKSUM_OFFSET (14*1024-4) +#define BUFSIZE (16*1024) +#define FILE_PERM (S_IRUSR | S_IWUSR | S_IRGRP \ + | S_IWGRP | S_IROTH | S_IWOTH) +/* +* Requirement: +* IROM code reads first 14K bytes from boot device. +* It then calculates the checksum of 14K-4 bytes and compare with data at +* 14K-4 offset. +* +* This function takes two filenames: +* IN "u-boot-spl.bin" and +* OUT "u-boot-mmc-spl.bin" as filenames. +* It reads the "u-boot-spl.bin" in 16K buffer. +* It calculates checksum of 14K-4 Bytes and stores at 14K-4 offset in buffer. +* It writes the buffer to "u-boot-mmc-spl.bin" file. +*/ + +int main(int argc, char **argv) +{ + int i, len; + unsigned char buffer[BUFSIZE] = {0}; + int ifd, ofd; + unsigned int checksum = 0, count; + + if (argc != 3) { + printf(" %d Wrong number of arguments\n", argc); + exit(EXIT_FAILURE); + } + + ifd = open(argv[1], O_RDONLY); + if (ifd < 0) { + fprintf(stderr, "%s: Can't open %s: %s\n", + argv[0], argv[1], strerror(errno)); + exit(EXIT_FAILURE); + } + + ofd = open(argv[2], O_WRONLY | O_CREAT | O_TRUNC, FILE_PERM); + if (ifd < 0) { + fprintf(stderr, "%s: Can't open %s: %s\n", + argv[0], argv[2], strerror(errno)); + if (ifd) + close(ifd); + exit(EXIT_FAILURE); + } + + len = lseek(ifd, 0, SEEK_END); + lseek(ifd, 0, SEEK_SET); + + count = (len < CHECKSUM_OFFSET) ? len : CHECKSUM_OFFSET; + + if (read(ifd, buffer, count) != count) { + fprintf(stderr, "%s: Can't read %s: %s\n", + argv[0], argv[1], strerror(errno)); + + if (ifd) + close(ifd); + if (ofd) + close(ofd); + + exit(EXIT_FAILURE); + } + + for (i = 0, checksum = 0; i < CHECKSUM_OFFSET; i++) + checksum += buffer[i]; + + memcpy(&buffer[CHECKSUM_OFFSET], &checksum, sizeof(checksum)); + + if (write(ofd, buffer, BUFSIZE) != BUFSIZE) { + fprintf(stderr, "%s: Can't write %s: %s\n", + argv[0], argv[2], strerror(errno)); + + if (ifd) + close(ifd); + if (ofd) + close(ofd); + + exit(EXIT_FAILURE); + } + + if (ifd) + close(ifd); + if (ofd) + close(ofd); + + return EXIT_SUCCESS; +} diff --git a/drivers/mtd/nand/s3c64xx.c b/drivers/mtd/nand/s3c64xx.c index 3199bf1..b85b641 100644 --- a/drivers/mtd/nand/s3c64xx.c +++ b/drivers/mtd/nand/s3c64xx.c @@ -39,7 +39,7 @@ #define MAX_CHIPS 2 static int nand_cs[MAX_CHIPS] = {0, 1};
-#ifdef CONFIG_NAND_SPL +#ifdef CONFIG_SPL_BUILD #define printf(arg...) do {} while (0) #endif
@@ -285,7 +285,7 @@ int board_nand_init(struct nand_chip *nand) nand->dev_ready = s3c_nand_device_ready; nand->select_chip = s3c_nand_select_chip; nand->options = 0; -#ifdef CONFIG_NAND_SPL +#ifdef CONFIG_SPL_BUILD nand->read_byte = nand_read_byte; nand->write_buf = nand_write_buf; nand->read_buf = nand_read_buf; diff --git a/include/configs/smdk6400.h b/include/configs/smdk6400.h index 06b85bf..632ecb7 100644 --- a/include/configs/smdk6400.h +++ b/include/configs/smdk6400.h @@ -238,11 +238,10 @@ #define CONFIG_SYS_NAND_YAFFS_WRITE 1 /* support yaffs write */ #define CONFIG_SYS_NAND_BBT_2NDPAGE 1 /* bad-block markers in 1st and 2nd pages */
-#define CONFIG_SYS_NAND_U_BOOT_DST CONFIG_SYS_PHY_UBOOT_BASE /* NUB load-addr */ -#define CONFIG_SYS_NAND_U_BOOT_START CONFIG_SYS_NAND_U_BOOT_DST /* NUB start-addr */ - -#define CONFIG_SYS_NAND_U_BOOT_OFFS (4 * 1024) /* Offset to RAM U-Boot image */ -#define CONFIG_SYS_NAND_U_BOOT_SIZE (252 * 1024) /* Size of RAM U-Boot image */ +/* Offset to RAM U-Boot image */ +#define CONFIG_SYS_NAND_U_BOOT_OFFS (16 * 1024) +/* Size of RAM U-Boot image */ +#define CONFIG_SYS_NAND_U_BOOT_SIZE (252 * 1024)
/* NAND chip page size */ #define CONFIG_SYS_NAND_PAGE_SIZE 2048 @@ -266,8 +265,6 @@ 48, 49, 50, 51, 52, 53, 54, 55, \ 56, 57, 58, 59, 60, 61, 62, 63}
-/* Boot configuration (define only one of next 3) */ -#define CONFIG_BOOT_NAND /* None of these are currently implemented. Left from the original Samsung * version for reference #define CONFIG_BOOT_NOR @@ -275,7 +272,15 @@ #define CONFIG_BOOT_ONENAND */
-#define CONFIG_NAND +#define CONFIG_SPL +#define CONFIG_SPL_NAND +#define CONFIG_SPL_NAND_SIMPLE +#define CONFIG_SPL_NAND_SUPPORT + +#define CONFIG_SPL_TEXT_BASE 0xd0020000 +#define CONFIG_SPL_STACK CONFIG_SYS_PHY_UBOOT_BASE - CONFIG_SYS_MALLOC_LEN +#define CONFIG_SPL_LIBGENERIC_SUPPORT + #define CONFIG_NAND_S3C64XX /* Unimplemented or unsupported. See comment above. #define CONFIG_ONENAND