From: Xiangfu Liu xiangfu@openmobilefree.net
Signed-off-by: Xiangfu Liu xiangfu@openmobilefree.net --- nand_spl/board/xburst/nanonote/Makefile | 96 ++++++++ nand_spl/board/xburst/nanonote/u-boot.lds | 63 ++++++ nand_spl/nand_boot_jz4740.c | 344 +++++++++++++++++++++++++++++ 3 files changed, 503 insertions(+), 0 deletions(-) create mode 100644 nand_spl/board/xburst/nanonote/Makefile create mode 100644 nand_spl/board/xburst/nanonote/u-boot.lds create mode 100644 nand_spl/nand_boot_jz4740.c
diff --git a/nand_spl/board/xburst/nanonote/Makefile b/nand_spl/board/xburst/nanonote/Makefile new file mode 100644 index 0000000..f5d1eb5 --- /dev/null +++ b/nand_spl/board/xburst/nanonote/Makefile @@ -0,0 +1,96 @@ +# +# (C) Copyright 2006 +# Stefan Roese, DENX Software Engineering, sr@denx.de. +# +# 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 +TEXT_BASE = 0x80000000 + +LDSCRIPT= $(TOPDIR)/nand_spl/board/$(BOARDDIR)/u-boot.lds +LDFLAGS = -Bstatic -T $(LDSCRIPT) -Ttext $(TEXT_BASE) +AFLAGS += -DCONFIG_NAND_SPL +CFLAGS += -DCONFIG_NAND_SPL -O2 + +SOBJS = start.o usbboot.o +COBJS = nand_boot_jz4740.o cpu.o jz4740.o jz_serial.o + +SRCS := $(addprefix $(obj),$(SOBJS:.o=.S) $(COBJS:.o=.c)) +OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) +__OBJS := $(SOBJS) $(COBJS) +LNDIR := $(OBJTREE)/nand_spl/board/$(BOARDDIR) + +nandobj := $(OBJTREE)/nand_spl/ + +ALL = $(nandobj)u-boot-spl $(nandobj)u-boot-spl.bin $(nandobj)u-boot-spl-16k.bin +all: $(obj).depend $(ALL) + +$(nandobj)u-boot-spl-16k.bin: $(nandobj)u-boot-spl.bin + dd bs=1024 count=8 if=/dev/zero of=$(nandobj)junk1 + cat $< $(nandobj)junk1 > $(nandobj)junk2 + dd bs=1024 count=8 if=$(nandobj)junk2 of=$(nandobj)junk3 + cat $(nandobj)junk3 $(nandobj)junk3 > $(nandobj)junk4 + dd bs=1024 count=256 if=/dev/zero of=$(nandobj)junk5 + cat $(nandobj)junk4 $(nandobj)junk5 > $(nandobj)junk6 + dd bs=1024 count=256 if=$(nandobj)junk6 of=$@ + rm -f $(nandobj)junk* + +$(nandobj)u-boot-spl.bin: $(nandobj)u-boot-spl + $(OBJCOPY) ${OBJCFLAGS} -O binary $< $@ + +$(nandobj)u-boot-spl: $(OBJS) + cd $(LNDIR) && $(LD) $(LDFLAGS) $$UNDEF_SYM $(__OBJS) \ + -Map $(nandobj)u-boot-spl.map \ + -o $(nandobj)u-boot-spl + +# create symbolic links for common files +$(obj)start.S: + @rm -f $(obj)start.S + ln -s $(SRCTREE)/arch/mips/cpu/xburst/start_spl.S $(obj)start.S + +$(obj)usbboot.S: + @rm -f $(obj)usbboot.S + ln -s $(SRCTREE)/arch/mips/cpu/xburst/usbboot.S $(obj)usbboot.S + +$(obj)cpu.c: + @rm -f $(obj)cpu.c + ln -s $(SRCTREE)/arch/mips/cpu/xburst/cpu.c $(obj)cpu.c + +$(obj)jz4740.c: + @rm -f $(obj)jz4740.c + ln -s $(SRCTREE)/arch/mips/cpu/xburst/jz4740.c $(obj)jz4740.c + +$(obj)jz_serial.c: + @rm -f $(obj)jz_serial.c + ln -s $(SRCTREE)/arch/mips/cpu/xburst/jz_serial.c $(obj)jz_serial.c + +$(obj)nand_boot_jz4740.c: + @rm -f $(obj)nand_boot_jz4740.c + ln -s $(SRCTREE)/nand_spl/nand_boot_jz4740.c $(obj)nand_boot_jz4740.c + +$(obj)%.o: $(obj)%.S + $(CC) $(AFLAGS) -c -o $@ $< + +$(obj)%.o: $(obj)%.c + $(CC) $(CFLAGS) -c -o $@ $< + +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend diff --git a/nand_spl/board/xburst/nanonote/u-boot.lds b/nand_spl/board/xburst/nanonote/u-boot.lds new file mode 100644 index 0000000..7042388 --- /dev/null +++ b/nand_spl/board/xburst/nanonote/u-boot.lds @@ -0,0 +1,63 @@ +/* + * (C) Copyright 2005 + * Ingenic Semiconductor, jlwei@ingenic.cn + * + * 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 + */ + +OUTPUT_FORMAT("elf32-tradlittlemips", "elf32-tradlittlemips", "elf32-tradlittlemips") + +OUTPUT_ARCH(mips) +ENTRY(_start) +SECTIONS +{ + . = 0x00000000; + + . = ALIGN(4); + .text : + { + *(.text) + } + + . = ALIGN(4); + .rodata : { *(.rodata) } + + . = ALIGN(4); + .data : { *(.data) } + + . = ALIGN(4); + .sdata : { *(.sdata) } + + _gp = ALIGN(16); + + __got_start = .; + .got : { *(.got) } + __got_end = .; + + .sdata : { *(.sdata) } + + __u_boot_cmd_start = .; + .u_boot_cmd : { *(.u_boot_cmd) } + __u_boot_cmd_end = .; + + uboot_end_data = .; + num_got_entries = (__got_end - __got_start) >> 2; + + . = ALIGN(4); + .sbss : { *(.sbss) } + .bss : { *(.bss) } + uboot_end = .; +} diff --git a/nand_spl/nand_boot_jz4740.c b/nand_spl/nand_boot_jz4740.c new file mode 100644 index 0000000..aa911a2 --- /dev/null +++ b/nand_spl/nand_boot_jz4740.c @@ -0,0 +1,344 @@ +/* + * Copyright (C) 2007 Ingenic Semiconductor Inc. + * Author: Peter jlwei@ingenic.cn + * + * 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 <nand.h> +#include <asm/io.h> +#include <asm/jz4740.h> + +#define KEY_U_OUT (32 * 2 + 16) +#define KEY_U_IN (32 * 3 + 19) + +/* NAND flash definitions */ +#define NAND_DATAPORT 0xb8000000 +#define NAND_ADDRPORT 0xb8010000 +#define NAND_COMMPORT 0xb8008000 + +#if (JZ4740_NANDBOOT_CFG == JZ4740_NANDBOOT_B8R3) + #define NAND_BUS_WIDTH 8 + #define NAND_ROW_CYCLE 3 +#elif (JZ4740_NANDBOOT_CFG == JZ4740_NANDBOOT_B8R2) + #define NAND_BUS_WIDTH 8 + #define NAND_ROW_CYCLE 2 +#elif (JZ4740_NANDBOOT_CFG == JZ4740_NANDBOOT_B16R3) + #define NAND_BUS_WIDTH 16 + #define NAND_ROW_CYCLE 3 +#elif (JZ4740_NANDBOOT_CFG == JZ4740_NANDBOOT_B16R2) + #define NAND_BUS_WIDTH 16 + #define NAND_ROW_CYCLE 2 +#endif + +static inline void __nand_dev_ready(void) +{ + unsigned int timeout = 10000; + while ((readl(GPIO_PXPIN(2)) & 0x40000000) && timeout--) + ; + + while (!(readl(GPIO_PXPIN(2)) & 0x40000000)) + ; +} + +/* NAND flash parameters */ +static int page_size; +static int oob_size; +static int ecc_count; +static int page_per_block; +static int bad_block_pos; +static int block_size; +static unsigned char oob_buf[128] = {0}; + +/*External routines */ +extern void flush_cache_all(void); +extern int serial_init(void); +extern void serial_puts(const char *s); +extern void sdram_init(void); +extern void pll_init(void); +extern void usb_boot(); + +/* NAND flash routines */ +static inline void nand_read_buf(void *buf, int count) +{ +#if NAND_BUS_WIDTH == 16 + int i; + u16 *p = (u16 *)buf; + + for (i = 0; i < count; i += 2) + *p++ = readw(NAND_DATAPORT); + +#elif NAND_BUS_WIDTH == 8 + int i; + u8 *p = (u8 *)buf; + + for (i = 0; i < count; i++) + *p++ = readb(NAND_DATAPORT); + +#endif +} + +/* Correct 1~9-bit errors in 512-bytes data */ +static void rs_correct(unsigned char *dat, int idx, int mask) +{ + int i; + + idx--; + + i = idx + (idx >> 3); + if (i >= 512) + return; + + mask <<= (idx & 0x7); + + dat[i] ^= mask & 0xff; + if (i < 511) + dat[i+1] ^= (mask >> 8) & 0xff; +} + +static int nand_read_oob(int page_addr, uchar *buf, int size) +{ + int col_addr; + if (page_size != 512) + col_addr = page_size; + else { + col_addr = 0; + __nand_dev_ready(); + } + + if (page_size != 512) /* Send READ0 command */ + writeb(NAND_CMD_READ0, NAND_COMMPORT); + else /* Send READOOB command */ + writeb(NAND_CMD_READOOB, NAND_COMMPORT); + + /* Send column address */ + writeb((col_addr & 0xff), NAND_ADDRPORT); + if (page_size != 512) + writeb((col_addr >> 8) & 0xff, NAND_ADDRPORT); + + /* Send page address */ + writeb((page_addr & 0xff), NAND_ADDRPORT); + writeb((page_addr >> 8) & 0xff, NAND_ADDRPORT); +#if defined NAND_ROW_CYCLE && NAND_ROW_CYCLE == 3 + writeb((page_addr >> 16) & 0xff, NAND_ADDRPORT); +#endif + + /* Send READSTART command for 2048 or 4096 ps NAND */ + if (page_size != 512) + writeb(NAND_CMD_READSTART, NAND_COMMPORT); + + __nand_dev_ready(); /* Wait for device ready */ + + nand_read_buf(buf, size); /* Read oob data */ + + if (page_size == 512) + __nand_dev_ready(); + + return 0; +} + +static int nand_read_page(int page_addr, uchar *dst, uchar *oobbuf) +{ + uchar *databuf = dst, *tmpbuf; + int i, j; + + nand_read_oob(page_addr, oobbuf, oob_size); /* Read oob data */ + + writeb(NAND_CMD_READ0, NAND_COMMPORT); /* Send READ0 command */ + + writeb(0, NAND_ADDRPORT); /* Send column address */ + if (page_size != 512) + writeb(0, NAND_ADDRPORT); + + /* Send page address */ + writeb((page_addr & 0xff), NAND_ADDRPORT); + writeb((page_addr >> 8) & 0xff, NAND_ADDRPORT); +#if defined NAND_ROW_CYCLE && NAND_ROW_CYCLE == 3 + writeb((page_addr >> 16) & 0xff, NAND_ADDRPORT); +#endif + + /* Send READSTART command for 2048 or 4096 ps NAND */ + if (page_size != 512) + writeb(NAND_CMD_READSTART, NAND_COMMPORT); + + /* Wait for device ready */ + __nand_dev_ready(); + + /* Read page data */ + tmpbuf = databuf; + + for (i = 0; i < ecc_count; i++) { + volatile unsigned char *paraddr = (volatile unsigned char *)EMC_NFPAR0; + unsigned int stat; + + /* Enable RS decoding */ + writel(0x0, EMC_NFINTS); + writel(EMC_NFECR_ECCE | EMC_NFECR_ERST | EMC_NFECR_RS | + EMC_NFECR_RS_DECODING, EMC_NFECR); + + /* Read data */ + nand_read_buf((void *)tmpbuf, CONFIG_SYS_NAND_ECCSIZE); + + /* Set PAR values */ + for (j = 0; j < CONFIG_SYS_NAND_ECCBYTES; j++) + *paraddr++ = oobbuf[CONFIG_SYS_NAND_ECC_POS + i*CONFIG_SYS_NAND_ECCBYTES + j]; + + /* Set PRDY */ + writel(readl(EMC_NFECR) |= EMC_NFECR_PRDY, EMC_NFECR); + + /* Wait for completion */ + while (!(readl(EMC_NFINTS) & EMC_NFINTS_DECF)) + ; + + /* Disable decoding */ + writel(readl(EMC_NFECR) & ~EMC_NFECR_ECCE, EMC_NFECR); + + /* Check result of decoding */ + stat = readl(EMC_NFINTS); + if (stat & EMC_NFINTS_ERR) { + /* Error occurred */ + /* serial_puts("Error occurred\n"); */ + if (stat & EMC_NFINTS_UNCOR) { + /* Uncorrectable error occurred */ + /* serial_puts("Uncorrectable error occurred\n"); */ + } else { + unsigned int errcnt, index, mask; + + errcnt = (stat & EMC_NFINTS_ERRCNT_MASK) >> EMC_NFINTS_ERRCNT_BIT; + switch (errcnt) { + case 4: + index = (readl(EMC_NFERR3) & EMC_NFERR_INDEX_MASK) >> EMC_NFERR_INDEX_BIT; + mask = (readl(EMC_NFERR3) & EMC_NFERR_MASK_MASK) >> EMC_NFERR_MASK_BIT; + case 3: + index = (readl(EMC_NFERR2) & EMC_NFERR_INDEX_MASK) >> EMC_NFERR_INDEX_BIT; + mask = (readl(EMC_NFERR2) & EMC_NFERR_MASK_MASK) >> EMC_NFERR_MASK_BIT; + rs_correct(tmpbuf, index, mask); + case 2: + index = (readl(EMC_NFERR1) & EMC_NFERR_INDEX_MASK) >> EMC_NFERR_INDEX_BIT; + mask = (readl(EMC_NFERR1) & EMC_NFERR_MASK_MASK) >> EMC_NFERR_MASK_BIT; + rs_correct(tmpbuf, index, mask); + case 1: + index = (readl(EMC_NFERR0) & EMC_NFERR_INDEX_MASK) >> EMC_NFERR_INDEX_BIT; + mask = (readl(EMC_NFERR0) & EMC_NFERR_MASK_MASK) >> EMC_NFERR_MASK_BIT; + rs_correct(tmpbuf, index, mask); + break; + default: + break; + } + } + } + tmpbuf += CONFIG_SYS_NAND_ECCSIZE; + } + + return 0; +} + +#ifndef CONFIG_SYS_NAND_BADBLOCK_PAGE +/* NAND bad block was marked at this page in a block, starting from 0 */ +#define CONFIG_SYS_NAND_BADBLOCK_PAGE 0 +#endif + +static void nand_load(int offs, int uboot_size, uchar *dst) +{ + int page; + int pagecopy_count; + + /* enable nand */ + writel(readl(EMC_NFCSR) | (EMC_NFCSR_NFE1 | EMC_NFCSR_NFCE1), EMC_NFCSR); + + page = offs / page_size; + pagecopy_count = 0; + while (pagecopy_count < (uboot_size / page_size)) { + if (page % page_per_block == 0) { + nand_read_oob(page + CONFIG_SYS_NAND_BADBLOCK_PAGE, + oob_buf, oob_size); + if (oob_buf[bad_block_pos] != 0xff) { + page += page_per_block; + continue; /* Skip bad block */ + } + } + /* Load this page to dst, do the ECC */ + nand_read_page(page, dst, oob_buf); + + dst += page_size; + page++; + pagecopy_count++; + } + + /* disable nand */ + writel(readl(EMC_NFCSR) & ~(EMC_NFCSR_NFCE1), EMC_NFCSR); +} + +static void gpio_init(void) +{ + __gpio_as_sdram_16bit_4720(); + __gpio_as_uart0(); + __gpio_jtag_to_uart0(); +} + +static int is_usb_boot() +{ + __gpio_as_input(KEY_U_IN); + __gpio_enable_pull(KEY_U_IN); + __gpio_as_output(KEY_U_OUT); + __gpio_clear_pin(KEY_U_OUT); + + if (__gpio_get_pin(KEY_U_IN) == 0) + return 1; + + return 0; +} + +void nand_boot(void) +{ + void (*uboot)(void); + + gpio_init(); + pll_init(); + serial_init(); + sdram_init(); + writel(0x094c4400, EMC_SMCR1); /* Optimize the timing of nand */ + + serial_puts("\nNAND Boot\n"); + +#if defined(CONFIG_NANONOTE) + if (is_usb_boot()) { + serial_puts("[U] pressed, goto USBBOOT mode\n"); + usb_boot(); + } +#endif + page_size = CONFIG_SYS_NAND_PAGE_SIZE; + block_size = CONFIG_SYS_NAND_BLOCK_SIZE; + page_per_block = CONFIG_SYS_NAND_BLOCK_SIZE / CONFIG_SYS_NAND_PAGE_SIZE; + bad_block_pos = (page_size == 512) ? 5 : 0; + oob_size = page_size / 32; + ecc_count = page_size / CONFIG_SYS_NAND_ECCSIZE; + + /* Load U-Boot image from NAND into RAM */ + nand_load(CONFIG_SYS_NAND_U_BOOT_OFFS, CONFIG_SYS_NAND_U_BOOT_SIZE, + (uchar *)CONFIG_SYS_NAND_U_BOOT_DST); + + uboot = (void (*)(void))CONFIG_SYS_NAND_U_BOOT_START; + + serial_puts("Starting U-Boot ...\n"); + + /* Flush caches */ + flush_cache_all(); + + /* Jump to U-Boot image */ + (*uboot)(); +}