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-add nandboot to xburst-tool
-nandboot load the zImage kernel Signed-off-by: Xiangfu Liu <xiangfu.z@gmail.com>
This commit is contained in:
Xiangfu Liu
207
nandboot/src/nand_boot.c
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207
nandboot/src/nand_boot.c
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/*
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* nand_boot.c
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*
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* NAND boot routine.
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*
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* Then nand boot loader can load the zImage type to execute.
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* To get the zImage, build the kernel by 'make zImage'.
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*
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* Copyright (c) 2005-2008 Ingenic Semiconductor Inc.
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* Author: <jlwei@ingenic.cn>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*/
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#include <config.h>
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#include <nand.h>
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#ifdef CONFIG_JZ4730
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#include <jz4730.h>
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#include <jz4730_board.h>
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#endif
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#ifdef CONFIG_JZ4740
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#include <jz4740.h>
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#include <jz4740_board.h>
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#endif
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/*
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* NAND Flash parameters (must be conformed to the NAND being used)
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*/
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static struct nand_param nand_p = {
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.bus_width = 8, /* data bus width: 8-bit/16-bit */
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.row_cycle = 3, /* row address cycles: 2/3 */
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.page_size = 2048, /* page size in bytes: 512/2048 */
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.oob_size = 64, /* oob size in bytes: 16/64 */
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.page_per_block = 128, /* pages per block: 32/64/128 */
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.bad_block_pos = 0 /* bad block pos in oob: 0/5 */
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};
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#define SIZE_KB (1 * 1024)
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#define SIZE_MB (1 * 1024 * 1024)
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/*
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* Kernel image
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*/
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#define CFG_KERNEL_OFFS (256 * SIZE_KB) /* NAND offset of kernel image being loaded, has to be aligned to a block address! */
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#define CFG_KERNEL_SIZE (2 * SIZE_MB) /* Size of kernel image, has to be integer multiply of a block size! */
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#define CFG_KERNEL_DST 0x80600000 /* Load kernel to this addr */
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#define CFG_KERNEL_START 0x80600000 /* Start kernel from this addr */
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/*
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* Kernel parameters
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*/
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#define PARAM_BASE 0x80004000
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/*
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* Local variables
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*/
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static u32 *param_addr = 0;
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static u8 *tmpbuf = 0;
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static u8 cmdline[256] = CFG_CMDLINE;
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extern void gpio_init(void);
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extern int serial_init (void);
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extern void pll_init(void);
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extern void sdram_init(void);
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/*
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* Load kernel image from NAND into RAM
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*/
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static int nand_load(struct nand_param *nandp, int offs, int kernel_size, u8 *dst)
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{
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int page_size, page_per_block;
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int block;
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int block_size;
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int blockcopy_count;
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int page;
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page_size = nandp->page_size;
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page_per_block = nandp->page_per_block;
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/*
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* Enable NANDFlash controller
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*/
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nand_enable();
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/*
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* offs has to be aligned to a block address!
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*/
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block_size = page_size * page_per_block;
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block = offs / block_size;
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blockcopy_count = 0;
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while (blockcopy_count < (kernel_size / block_size)) {
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for (page = 0; page < page_per_block; page++) {
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if (page == 0) {
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/*
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* New block
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*/
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if (block_is_bad(nandp, block)) {
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block++;
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/*
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* Skip bad block
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*/
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continue;
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}
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}
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nand_read_page(nandp, block, page, dst);
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dst += page_size;
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}
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block++;
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blockcopy_count++;
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}
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/*
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* Disable NANDFlash controller
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*/
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nand_disable();
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return 0;
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}
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/*
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* NAND Boot routine
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*/
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void nand_boot(void)
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{
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unsigned int boot_sel, i;
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void (*kernel)(int, char **, char *);
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/*
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* Init gpio, serial, pll and sdram
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*/
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gpio_init();
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serial_init();
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serial_puts("\n\nNAND Secondary Program Loader\n\n");
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pll_init();
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sdram_init();
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#ifdef CONFIG_JZ4740
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/*
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* JZ4740 can detect some NAND parameters from the boot select
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*/
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boot_sel = REG_EMC_BCR >> 30;
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if (boot_sel == 0x2)
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nand_p.page_size = 512;
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else
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nand_p.page_size = 2048;
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#endif
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#ifdef CONFIG_JZ4730
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/*
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* JZ4730 can detect some NAND parameters from the boot select
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*/
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boot_sel = (REG_EMC_NFCSR & 0x70) >> 4;
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nand_p.bus_width = (boot_sel & 0x1) ? 16 : 8;
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nand_p.page_size = (boot_sel & 0x2) ? 2048 : 512;
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nand_p.row_cycle = (boot_sel & 0x4) ? 3 : 2;
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#endif
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/*
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* Load kernel image from NAND into RAM
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*/
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nand_load(&nand_p, CFG_KERNEL_OFFS, CFG_KERNEL_SIZE, (u8 *)CFG_KERNEL_DST);
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serial_puts("Starting kernel ...\n\n");
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/*
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* Prepare kernel parameters and environment
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*/
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param_addr = (u32 *)PARAM_BASE;
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param_addr[0] = 0; /* might be address of ascii-z string: "memsize" */
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param_addr[1] = 0; /* might be address of ascii-z string: "0x01000000" */
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param_addr[2] = 0;
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param_addr[3] = 0;
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param_addr[4] = 0;
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param_addr[5] = PARAM_BASE + 32;
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param_addr[6] = CFG_KERNEL_START;
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tmpbuf = (u8 *)(PARAM_BASE + 32);
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for (i = 0; i < 256; i++)
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tmpbuf[i] = cmdline[i]; /* linux command line */
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kernel = (void (*)(int, char **, char *))CFG_KERNEL_START;
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/*
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* Flush caches
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*/
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flush_cache_all();
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/*
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* Jump to kernel image
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*/
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(*kernel)(2, (char **)(PARAM_BASE + 16), (char *)PARAM_BASE);
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}
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