diff options
Diffstat (limited to 'board/st-ericsson/snowball/mmc_utils.c')
| -rw-r--r-- | board/st-ericsson/snowball/mmc_utils.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/board/st-ericsson/snowball/mmc_utils.c b/board/st-ericsson/snowball/mmc_utils.c new file mode 100644 index 000000000..6c5a8150d --- /dev/null +++ b/board/st-ericsson/snowball/mmc_utils.c @@ -0,0 +1,180 @@ +/* + * Copyright (C) ST-Ericsson SA 2009 + * + * 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 <linux/ctype.h> + +#include <asm/arch/common.h> +#include <asm/arch/cpu.h> +#include <command.h> +#include <mmc.h> +#include <fat.h> + +#define PIB_EMMC_ADDR 0x00 + +struct partition { + unsigned char boot_ind; /* 0x80 - active */ + unsigned char head; /* starting head */ + unsigned char sector; /* starting sector */ + unsigned char cyl; /* starting cylinder */ + unsigned char sys_ind; /* What partition type */ + unsigned char end_head; /* end head */ + unsigned char end_sector; /* end sector */ + unsigned char end_cyl; /* end cylinder */ + u32 start_sect; /* starting sector counting from 0 */ + u32 nr_sects; /* nr of sectors in partition */ +} __attribute__((packed)); + +#define PART(type, start, num) \ + { \ + .boot_ind = 0x00, \ + .head = 0x03, \ + .sector = 0xD0, \ + .cyl = 0xff, \ + .sys_ind = type, \ + .end_head = 0x03, \ + .end_sector = 0xd0, \ + .end_cyl = 0xff, \ + .start_sect = start, \ + .nr_sects = num, \ + } + +static struct partition partitions_ed[] = { + [0] = PART(0x83, 0x000A0000, 0x00004000), /* Kernel */ + [1] = PART(0x83, 0x000A4000, 0x00080000), /* Root file system */ + [2] = PART(0x83, 0x00124000, 0x0022c000), + [3] = PART(0x0c, 0x00350000, 0x00b9a000), +}; + +static struct partition partitions_v1[] = { + [0] = PART(0x83, 0x000A0000, 0x00004000), /* Kernel */ + [1] = PART(0x83, 0x000A4000, 0x00080000), /* Root file system */ + [2] = PART(0x83, 0x00000400, 0x00000800), /* Modem parameters */ + [3] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, +}; + +#undef PART + +int write_partition_block(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + int err; + u32 offset = PIB_EMMC_ADDR; + u8 mbr[512]; + u8 emmc_existing_partition[512]; + struct mmc *boot_dev = NULL; + + (void) cmdtp; /* Parameter not used! */ + (void) flag; /* Parameter not used! */ + (void) argc; /* Parameter not used! */ + (void) argv; /* Parameter not used! */ + + memset(mbr, 0, 0x1be); + if (u8500_is_earlydrop()) + memcpy(mbr + 0x1be, partitions_ed, sizeof(partitions_ed)); + else + memcpy(mbr + 0x1be, partitions_v1, sizeof(partitions_v1)); + + /* magic */ + mbr[0x1fe] = 0x55; + mbr[0x1ff] = 0xAA; + + printf("Writing partition block (if needed)...\n"); + + boot_dev = find_mmc_device(CONFIG_EMMC_DEV_NUM); + if (!boot_dev) { + printf(" Error: eMMC device not found\n"); + return 1; + } + + err = boot_dev->block_dev.block_read(CONFIG_EMMC_DEV_NUM, + offset, + 1, + (void *) emmc_existing_partition); + if (err != 1) { + printf(" Error: eMMC read failed\n"); + return 1; + } + + if (memcmp((void *)emmc_existing_partition, (void *)mbr, 512)) { + err = boot_dev->block_dev.block_write(CONFIG_EMMC_DEV_NUM, + offset, + 1, + (void *) mbr); + if (err != 1) { + printf(" Error: eMMC write failed\n"); + return 1; + } + } + printf(" eMMC partition block exists now\n"); + return 0; +} + +U_BOOT_CMD( + write_partition_block, 1, 0, write_partition_block, + "- write partition block on emmc device\n", + NULL +); + +/* + * command line commands + */ +#ifdef CONFIG_CMD_FAT +static int mmc_read_cmd_file(cmd_tbl_t *cmdtp, int flag, int argc, + char *argv[]) +{ + long sz; + char mmc_cmdbuffer[1024]; + struct mmc *mmc_dev; + (void) cmdtp; /* Parameter not used! */ + (void) flag; /* Parameter not used! */ + (void) argc; /* Parameter not used! */ + (void) argv; /* Parameter not used! */ + + mmc_dev = find_mmc_device(CONFIG_MMC_DEV_NUM); + if (mmc_dev == NULL) { + printf("mmc_read_cmd_file: find_mmc_device failed\n"); + return 1; + } + + if (fat_register_device(&mmc_dev->block_dev, 1) != 0) { + printf("mmc_read_cmd_file: fat_register_device failed\n"); + return 1; + } + + sz = file_fat_read("/command.txt", &mmc_cmdbuffer, + sizeof(mmc_cmdbuffer) - 1); + if (sz == -1) { + printf("No command.txt found in the MMC/SD card\n"); + return 1; + } + + mmc_cmdbuffer[sz] = '\0'; + setenv("bootcmd", mmc_cmdbuffer); + return 0; +} + +U_BOOT_CMD( + mmc_read_cmd_file, 1, 0, mmc_read_cmd_file, + "setup bootcmd env from command.txt on SD", + NULL +); +#endif + +/* ------------------------------- End of file ---------------------------- */ |