This patch adds support for MMC SPL booting. Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>master
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/*
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* Copyright (C) 2012 Samsung Electronics |
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* |
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* See file CREDITS for list of people who contributed to this |
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* project. |
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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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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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#include<common.h> |
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#include<config.h> |
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/*
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* Copy U-boot from mmc to RAM: |
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* COPY_BL2_FNPTR_ADDR: Address in iRAM, which Contains |
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* Pointer to API (Data transfer from mmc to ram) |
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*/ |
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void copy_uboot_to_ram(void) |
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{ |
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u32 (*copy_bl2)(u32, u32, u32) = (void *) *(u32 *)COPY_BL2_FNPTR_ADDR; |
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copy_bl2(BL2_START_OFFSET, BL2_SIZE_BLOC_COUNT, CONFIG_SYS_TEXT_BASE); |
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} |
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void board_init_f(unsigned long bootflag) |
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{ |
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__attribute__((noreturn)) void (*uboot)(void); |
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copy_uboot_to_ram(); |
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/* Jump to U-Boot image */ |
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uboot = (void *)CONFIG_SYS_TEXT_BASE; |
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(*uboot)(); |
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/* Never returns Here */ |
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} |
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/* Place Holders */ |
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void board_init_r(gd_t *id, ulong dest_addr) |
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{ |
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/* Function attribute is no-return */ |
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/* This Function never executes */ |
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while (1) |
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; |
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} |
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void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3) {} |
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/*
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* Copyright (C) 2012 Samsung Electronics |
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* |
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* See file CREDITS for list of people who contributed to this |
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* project. |
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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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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <unistd.h> |
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#include <fcntl.h> |
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#include <errno.h> |
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#include <string.h> |
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#include <sys/stat.h> |
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#include <compiler.h> |
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#define CHECKSUM_OFFSET (14*1024-4) |
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#define BUFSIZE (14*1024) |
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#define FILE_PERM (S_IRUSR | S_IWUSR | S_IRGRP \ |
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| S_IWGRP | S_IROTH | S_IWOTH) |
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/*
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* Requirement: |
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* IROM code reads first 14K bytes from boot device. |
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* It then calculates the checksum of 14K-4 bytes and compare with data at |
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* 14K-4 offset. |
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* |
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* This function takes two filenames: |
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* IN "u-boot-spl.bin" and |
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* OUT "$(BOARD)-spl.bin as filenames. |
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* It reads the "u-boot-spl.bin" in 16K buffer. |
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* It calculates checksum of 14K-4 Bytes and stores at 14K-4 offset in buffer. |
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* It writes the buffer to "$(BOARD)-spl.bin" file. |
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*/ |
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int main(int argc, char **argv) |
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{ |
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unsigned char buffer[BUFSIZE]; |
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int i, ifd, ofd; |
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uint32_t checksum = 0; |
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off_t len; |
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ssize_t count; |
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struct stat stat; |
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if (argc != 3) { |
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fprintf(stderr, "Usage: %s <infile> <outfile>\n", argv[0]); |
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exit(EXIT_FAILURE); |
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} |
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ifd = open(argv[1], O_RDONLY); |
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if (ifd < 0) { |
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fprintf(stderr, "%s: Can't open %s: %s\n", |
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argv[0], argv[1], strerror(errno)); |
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exit(EXIT_FAILURE); |
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} |
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ofd = open(argv[2], O_WRONLY | O_CREAT | O_TRUNC, FILE_PERM); |
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if (ifd < 0) { |
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fprintf(stderr, "%s: Can't open %s: %s\n", |
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argv[0], argv[2], strerror(errno)); |
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close(ifd); |
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exit(EXIT_FAILURE); |
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} |
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if (fstat(ifd, &stat)) { |
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fprintf(stderr, "%s: Unable to get size of %s: %s\n", |
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argv[0], argv[1], strerror(errno)); |
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close(ifd); |
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close(ofd); |
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exit(EXIT_FAILURE); |
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} |
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len = stat.st_size; |
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count = (len < CHECKSUM_OFFSET) ? len : CHECKSUM_OFFSET; |
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if (read(ifd, buffer, count) != count) { |
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fprintf(stderr, "%s: Can't read %s: %s\n", |
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argv[0], argv[1], strerror(errno)); |
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close(ifd); |
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close(ofd); |
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exit(EXIT_FAILURE); |
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} |
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for (i = 0, checksum = 0; i < CHECKSUM_OFFSET; i++) |
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checksum += buffer[i]; |
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checksum = cpu_to_le32(checksum); |
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memcpy(&buffer[CHECKSUM_OFFSET], &checksum, sizeof(checksum)); |
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if (write(ofd, buffer, BUFSIZE) != BUFSIZE) { |
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fprintf(stderr, "%s: Can't write %s: %s\n", |
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argv[0], argv[2], strerror(errno)); |
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close(ifd); |
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close(ofd); |
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exit(EXIT_FAILURE); |
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} |
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close(ifd); |
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close(ofd); |
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return EXIT_SUCCESS; |
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} |
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