mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 02:51:00 +00:00
65cc0e2a65
The rest of the unmigrated CONFIG symbols in the CONFIG_SYS namespace do not easily transition to Kconfig. In many cases they likely should come from the device tree instead. Move these out of CONFIG namespace and in to CFG namespace. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
206 lines
4.9 KiB
C
206 lines
4.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2013 Freescale Semiconductor, Inc.
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*/
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#include <common.h>
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#include <cpu_func.h>
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#include <hang.h>
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#include <mmc.h>
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#include <malloc.h>
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#ifndef CFG_SYS_MMC_U_BOOT_OFFS
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extern uchar mmc_u_boot_offs[];
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#endif
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/*
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* The environment variables are written to just after the u-boot image
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* on SDCard, so we must read the MBR to get the start address and code
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* length of the u-boot image, then calculate the address of the env.
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*/
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#define ESDHC_BOOT_SIGNATURE_OFF 0x40
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#define ESDHC_BOOT_SIGNATURE 0x424f4f54
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#define ESDHC_BOOT_IMAGE_SIZE 0x48
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#define ESDHC_BOOT_IMAGE_ADDR 0x50
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#define MBRDBR_BOOT_SIG_55 0x1fe
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#define MBRDBR_BOOT_SIG_AA 0x1ff
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void mmc_spl_load_image(uint32_t offs, unsigned int size, void *vdst)
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{
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uint blk_start, blk_cnt, err;
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struct mmc *mmc = find_mmc_device(0);
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if (!mmc) {
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puts("spl: mmc device not found!!\n");
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hang();
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}
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if (mmc_init(mmc)) {
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puts("MMC init failed\n");
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return;
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}
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blk_start = ALIGN(offs, mmc->read_bl_len) / mmc->read_bl_len;
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blk_cnt = ALIGN(size, mmc->read_bl_len) / mmc->read_bl_len;
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err = mmc->block_dev.block_read(&mmc->block_dev, blk_start, blk_cnt,
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vdst);
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if (err != blk_cnt) {
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puts("spl: mmc read failed!!\n");
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hang();
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}
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}
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/*
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* The main entry for mmc booting. It's necessary that SDRAM is already
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* configured and available since this code loads the main U-Boot image
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* from mmc into SDRAM and starts it from there.
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*/
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void __noreturn mmc_boot(void)
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{
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__attribute__((noreturn)) void (*uboot)(void);
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uint blk_start, blk_cnt, err;
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uchar *tmp_buf;
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u32 blklen;
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u32 blk_off;
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#ifndef CONFIG_FSL_CORENET
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uchar val;
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#ifndef CONFIG_SPL_FSL_PBL
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u32 val32;
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#endif
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uint i, byte_num;
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u32 sector;
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#endif
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u32 offset, code_len;
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struct mmc *mmc;
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mmc = find_mmc_device(0);
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if (!mmc) {
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puts("spl: mmc device not found!!\n");
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hang();
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}
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if (mmc_init(mmc)) {
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puts("spl: mmc device init failed!\n");
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hang();
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}
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blklen = mmc->read_bl_len;
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if (blklen < 512)
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blklen = 512;
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tmp_buf = malloc(blklen);
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if (!tmp_buf) {
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puts("spl: malloc memory failed!!\n");
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hang();
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}
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#ifdef CONFIG_FSL_CORENET
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offset = CFG_SYS_MMC_U_BOOT_OFFS;
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#else
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sector = 0;
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again:
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memset(tmp_buf, 0, blklen);
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/*
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* Read source addr from sd card
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*/
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blk_start = (sector * 512) / mmc->read_bl_len;
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blk_off = (sector * 512) % mmc->read_bl_len;
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blk_cnt = DIV_ROUND_UP(512, mmc->read_bl_len);
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err = mmc->block_dev.block_read(&mmc->block_dev, blk_start, blk_cnt, tmp_buf);
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if (err != blk_cnt) {
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puts("spl: mmc read failed!!\n");
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hang();
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}
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#ifdef CONFIG_SPL_FSL_PBL
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val = *(tmp_buf + blk_off + MBRDBR_BOOT_SIG_55);
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if (0x55 != val) {
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puts("spl: mmc MBR/DBR signature is not valid!!\n");
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hang();
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}
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val = *(tmp_buf + blk_off + MBRDBR_BOOT_SIG_AA);
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if (0xAA != val) {
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puts("spl: mmc MBR/DBR signature is not valid!!\n");
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hang();
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}
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#else
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/*
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* Booting from On-Chip ROM (eSDHC or eSPI), Document Number: AN3659, Rev. 2, 06/2012.
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* Pre-PBL BootROMs (MPC8536E, MPC8569E, P2020, P1011, P1012, P1013, P1020, P1021, P1022)
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* require custom BOOT signature on sector 0 and MBR/DBR signature is not required at all.
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*/
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byte_num = 4;
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val32 = 0;
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for (i = 0; i < byte_num; i++) {
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val = *(tmp_buf + blk_off + ESDHC_BOOT_SIGNATURE_OFF + i);
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val32 = (val32 << 8) + val;
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}
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if (val32 != ESDHC_BOOT_SIGNATURE) {
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/* BOOT signature may be on the first 24 sectors (each being 512 bytes) */
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if (++sector < 24)
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goto again;
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puts("spl: mmc BOOT signature is not valid!!\n");
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hang();
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}
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#endif
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byte_num = 4;
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offset = 0;
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for (i = 0; i < byte_num; i++) {
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val = *(tmp_buf + blk_off + ESDHC_BOOT_IMAGE_ADDR + i);
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offset = (offset << 8) + val;
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}
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#ifndef CFG_SYS_MMC_U_BOOT_OFFS
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offset += (ulong)&mmc_u_boot_offs - CONFIG_SPL_TEXT_BASE;
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#else
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offset += CFG_SYS_MMC_U_BOOT_OFFS;
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#endif
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#endif
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/*
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* Load U-Boot image from mmc into RAM
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*/
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code_len = CFG_SYS_MMC_U_BOOT_SIZE;
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blk_start = offset / mmc->read_bl_len;
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blk_off = offset % mmc->read_bl_len;
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blk_cnt = ALIGN(code_len, mmc->read_bl_len) / mmc->read_bl_len + 1;
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if (blk_off) {
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err = mmc->block_dev.block_read(&mmc->block_dev,
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blk_start, 1, tmp_buf);
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if (err != 1) {
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puts("spl: mmc read failed!!\n");
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hang();
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}
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blk_start++;
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}
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err = mmc->block_dev.block_read(&mmc->block_dev, blk_start, blk_cnt,
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(uchar *)CFG_SYS_MMC_U_BOOT_DST +
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(blk_off ? (mmc->read_bl_len - blk_off) : 0));
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if (err != blk_cnt) {
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puts("spl: mmc read failed!!\n");
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free(tmp_buf);
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hang();
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}
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/*
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* SDHC DMA may erase bytes at dst + bl_len - blk_off - 8
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* due to unaligned access. So copy leading bytes from tmp_buf
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* after SDHC DMA transfer.
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*/
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if (blk_off)
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memcpy((uchar *)CFG_SYS_MMC_U_BOOT_DST,
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tmp_buf + blk_off, mmc->read_bl_len - blk_off);
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/*
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* Clean d-cache and invalidate i-cache, to
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* make sure that no stale data is executed.
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*/
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flush_cache(CFG_SYS_MMC_U_BOOT_DST, CFG_SYS_MMC_U_BOOT_SIZE);
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/*
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* Jump to U-Boot image
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*/
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uboot = (void *)CFG_SYS_MMC_U_BOOT_START;
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(*uboot)();
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}
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