diff options
Diffstat (limited to 'recipes/u-boot/u-boot-mkimage-openmoko-native/nand-dynamic_partitions.patch')
| -rw-r--r-- | recipes/u-boot/u-boot-mkimage-openmoko-native/nand-dynamic_partitions.patch | 354 |
1 files changed, 354 insertions, 0 deletions
diff --git a/recipes/u-boot/u-boot-mkimage-openmoko-native/nand-dynamic_partitions.patch b/recipes/u-boot/u-boot-mkimage-openmoko-native/nand-dynamic_partitions.patch new file mode 100644 index 0000000000..ecce004ca6 --- /dev/null +++ b/recipes/u-boot/u-boot-mkimage-openmoko-native/nand-dynamic_partitions.patch @@ -0,0 +1,354 @@ +This patch adds support for 'dynamic partitions'. This basically +works as follows: +* The nand code generates a bad-block-table at the first scan of the chip +* The dynamic partition code calculates the raw partition sizes based on + the bad block table. E.g. if you have a partition of size 0x30000, and there are + two bad blocks (0x4000 each) in it, the raw size will increase to 0x38000, and the + following partitions get shifted towards the end of flash. + +Please note that currently the desired partition sizes are stored at compile-time +in an array in drivers/nand/nand_bbt.c, so this definitely needs to change before +submitting/merging upstream. + +In order to calculate the partiton map (and set mtdparts accordingly), you can use +the 'dynpart' command at the prompt. Use 'saveenv' to make the setting permanent. + +Signed-off-by: Harald Welte <laforge@openmoko.org> + +Index: u-boot/drivers/nand/nand_bbt.c +=================================================================== +--- u-boot.orig/drivers/nand/nand_bbt.c ++++ u-boot/drivers/nand/nand_bbt.c +@@ -1044,9 +1044,86 @@ + switch ((int)res) { + case 0x00: return 0; + case 0x01: return 1; ++ case 0x03: return 1; + case 0x02: return allowbbt ? 0 : 1; + } + return 1; + } + ++#if defined(CONFIG_NAND_DYNPART) ++ ++extern unsigned int dynpart_size[]; ++extern char *dynpart_names[]; ++ ++#define MTDPARTS_MAX_SIZE 512 ++ ++ ++static int skip_offs(const struct nand_chip *this, unsigned int offs) ++{ ++ int block = (int) (offs >> (this->bbt_erase_shift - 1)); ++ u_int8_t bbt = (this->bbt[block >> 3] >> (block & 0x06)) & 0x03; ++ ++ return bbt == 3; ++} ++ ++int nand_create_mtd_dynpart(struct mtd_info *mtd) ++{ ++ struct nand_chip *this = mtd->priv; ++ int part; ++ char *mtdparts; ++ unsigned int cur_offs = 0; ++ ++ mtdparts = malloc(MTDPARTS_MAX_SIZE); /* FIXME: bounds checking */ ++ if (!mtdparts) ++ return -ENOMEM; ++ ++ sprintf(mtdparts, "mtdparts=" CFG_NAND_DYNPART_MTD_KERNEL_NAME ":"); ++ ++ for (part = 0; dynpart_size[part] != 0; part++) { ++ unsigned int bb_delta = 0; ++ unsigned int offs = 0; ++ char mtdpart[32]; ++ ++ for (offs = cur_offs; ++ offs < cur_offs + dynpart_size[part] + bb_delta; ++ offs += mtd->erasesize) { ++ if (skip_offs(this, offs)) ++ bb_delta += mtd->erasesize; ++ } ++ ++ /* ++ * Absorb bad blocks immediately following this partition also ++ * into the partition, in order to make next partition start ++ * with a good block. This simplifies handling of the ++ * environment partition. ++ */ ++ while (offs < this->chipsize && skip_offs(this, offs)) { ++ bb_delta += mtd->erasesize; ++ offs += mtd->erasesize; ++ } ++ ++ if (cur_offs + dynpart_size[part] + bb_delta > this->chipsize) ++ dynpart_size[part] = this->chipsize - cur_offs - bb_delta; ++#if 0 ++ printf("partition %u: start = 0x%08x, end=%08x size=%08x, size_inc_bb=%08x\n", ++ part, cur_offs, cur_offs + dynpart_size[part] + bb_delta, ++ dynpart_size[part], dynpart_size[part] + bb_delta); ++#endif ++ cur_offs += dynpart_size[part] + bb_delta; ++ sprintf(mtdpart, "0x%.8x(%.16s),", dynpart_size[part] + bb_delta, ++ dynpart_names[part]); ++ mtdpart[sizeof(mtdpart)-1] = '\0'; ++ strncat(mtdparts, mtdpart, ++ MTDPARTS_MAX_SIZE-strlen(mtdparts)-1); ++ } ++ ++ mtdparts[strlen(mtdparts)-1] = '\0'; ++ printf("mtdparts %s\n", mtdparts); ++ setenv("mtdparts", mtdparts); ++ ++ free(mtdparts); ++ return 0; ++} ++#endif /* CONFIG_NAND_DYNPART */ ++ + #endif +Index: u-boot/include/configs/neo1973_gta01.h +=================================================================== +--- u-boot.orig/include/configs/neo1973_gta01.h ++++ u-boot/include/configs/neo1973_gta01.h +@@ -99,7 +99,7 @@ + CFG_CMD_ELF | \ + CFG_CMD_MISC | \ + /* CFG_CMD_USB | */ \ +- /* CFG_CMD_JFFS2 | */ \ ++ CFG_CMD_JFFS2 | \ + CFG_CMD_DIAG | \ + /* CFG_CMD_HWFLOW | */ \ + CFG_CMD_SAVES | \ +@@ -212,13 +212,13 @@ + #define CONFIG_FAT 1 + #define CONFIG_SUPPORT_VFAT + +-#if 0 ++#if 1 + /* JFFS2 driver */ + #define CONFIG_JFFS2_CMDLINE 1 + #define CONFIG_JFFS2_NAND 1 + #define CONFIG_JFFS2_NAND_DEV 0 +-#define CONFIG_JFFS2_NAND_OFF 0x634000 +-#define CONFIG_JFFS2_NAND_SIZE 0x39cc000 ++//#define CONFIG_JFFS2_NAND_OFF 0x634000 ++//#define CONFIG_JFFS2_NAND_SIZE 0x39cc000 + #endif + + /* ATAG configuration */ +@@ -257,4 +257,9 @@ + + #define CONFIG_DRIVER_PCF50606 1 + ++#define MTDIDS_DEFAULT "nand0=neo1973-nand" ++#define MTPARTS_DEFAULT "neo1973-nand:256k(u-boot),16k(u-boot_env),2M(kernel),640k(splash),-(jffs2)" ++#define CFG_NAND_DYNPART_MTD_KERNEL_NAME "neo1973-nand" ++#define CONFIG_NAND_DYNPART ++ + #endif /* __CONFIG_H */ +Index: u-boot/common/cmd_jffs2.c +=================================================================== +--- u-boot.orig/common/cmd_jffs2.c ++++ u-boot/common/cmd_jffs2.c +@@ -1841,6 +1841,29 @@ + return NULL; + } + ++/* Return the 'net size' of the partition (i.e. excluding any bad blocks) */ ++unsigned int nand_net_part_size(struct part_info *part) ++{ ++ struct mtd_info *mtd; ++ unsigned int offs; ++ unsigned int bb_delta = 0; ++ ++ if (!part || !part->dev || !part->dev->id || ++ part->dev->id->num >= CFG_MAX_NAND_DEVICE) ++ return 0; ++ ++ mtd = &nand_info[part->dev->id->num]; ++ ++ for (offs = part->offset; offs < part->offset + part->size; ++ offs += mtd->erasesize) { ++ if (nand_isbad_bbt(mtd, offs, 0)) ++ bb_delta += mtd->erasesize; ++ } ++ ++ return part->size - bb_delta; ++} ++ ++ + /***************************************************/ + /* U-boot commands */ + /***************************************************/ +@@ -2132,6 +2155,24 @@ + printf ("Usage:\n%s\n", cmdtp->usage); + return 1; + } ++ ++#if defined(CONFIG_NAND_DYNPART) ++extern int nand_create_mtd_dynpart(struct mtd_info *mtd); ++ ++int do_dynpart(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) ++{ ++#if 0 ++ int i = simple_strtoul(argv[1], NULL, 0); ++ if (i >= CFG_MAX_NAND_DEVICE) ++ return -EINVAL; ++#endif ++ nand_create_mtd_dynpart(&nand_info[0]); ++ ++ return 0; ++} ++#endif /* CONFIG_NAND_DYNPART */ ++ ++ + #endif /* #ifdef CONFIG_JFFS2_CMDLINE */ + + /***************************************************/ +@@ -2197,6 +2238,15 @@ + "<name> := '(' NAME ')'\n" + "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)\n" + ); ++ ++#if defined(CONFIG_NAND_DYNPART) ++U_BOOT_CMD( ++ dynpart, 1, 1, do_dynpart, ++ "dynpart\t- dynamically calculate partition table based on BBT\n", ++ "\n" ++ " - sets 'mtdparts' according to BBT\n"); ++#endif /* CONFIG_NAND_DYNPART */ ++ + #endif /* #ifdef CONFIG_JFFS2_CMDLINE */ + + /***************************************************/ +Index: u-boot/common/cmd_nand.c +=================================================================== +--- u-boot.orig/common/cmd_nand.c ++++ u-boot/common/cmd_nand.c +@@ -101,7 +101,7 @@ + } + + int +-arg_off_size(int argc, char *argv[], nand_info_t *nand, ulong *off, ulong *size) ++arg_off_size(int argc, char *argv[], nand_info_t *nand, ulong *off, ulong *size, int net) + { + int idx = nand_curr_device; + #if (CONFIG_COMMANDS & CFG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE) +@@ -122,10 +122,17 @@ + printf("'%s' is not a number\n", argv[1]); + return -1; + } +- if (*size > part->size) +- *size = part->size; ++ if (*size > part->size) { ++ if (net) ++ *size = nand_net_part_size(part); ++ else ++ *size = part->size; ++ } + } else { +- *size = part->size; ++ if (net) ++ *size = nand_net_part_size(part); ++ else ++ *size = part->size; + } + idx = dev->id->num; + *nand = nand_info[idx]; +@@ -261,7 +268,7 @@ + + printf("\nNAND %s: ", scrub ? "scrub" : "erase"); + /* skip first two or three arguments, look for offset and size */ +- if (arg_off_size(argc - o, argv + o, nand, &off, &size) != 0) ++ if (arg_off_size(argc - o, argv + o, nand, &off, &size, 0) != 0) + return 1; + + memset(&opts, 0, sizeof(opts)); +@@ -323,7 +330,7 @@ + + read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */ + printf("\nNAND %s: ", read ? "read" : "write"); +- if (arg_off_size(argc - 3, argv + 3, nand, &off, &size) != 0) ++ if (arg_off_size(argc - 3, argv + 3, nand, &off, &size, 1) != 0) + return 1; + + s = strchr(cmd, '.'); +@@ -445,7 +452,7 @@ + } + + if (strcmp(cmd, "unlock") == 0) { +- if (arg_off_size(argc - 2, argv + 2, nand, &off, &size) < 0) ++ if (arg_off_size(argc - 2, argv + 2, nand, &off, &size, 0) < 0) + return 1; + + if (!nand_unlock(nand, off, size)) { +Index: u-boot/common/cmd_dynenv.c +=================================================================== +--- u-boot.orig/common/cmd_dynenv.c ++++ u-boot/common/cmd_dynenv.c +@@ -60,7 +60,7 @@ + buf[2] = 'V'; + buf[3] = '0'; + +- if (arg_off_size(argc-2, argv+2, mtd, &addr, &dummy) < 0) { ++ if (arg_off_size(argc-2, argv+2, mtd, &addr, &dummy, 1) < 0) { + printf("Offset or partition name expected\n"); + goto fail; + } +Index: u-boot/include/util.h +=================================================================== +--- u-boot.orig/include/util.h ++++ u-boot/include/util.h +@@ -28,6 +28,6 @@ + + /* common/cmd_nand.c */ + int arg_off_size(int argc, char *argv[], nand_info_t *nand, ulong *off, +- ulong *size); ++ ulong *size, int net); + + #endif /* UTIL_H */ +Index: u-boot/board/qt2410/qt2410.c +=================================================================== +--- u-boot.orig/board/qt2410/qt2410.c ++++ u-boot/board/qt2410/qt2410.c +@@ -126,3 +126,9 @@ + + return 0; + } ++ ++unsigned int dynpart_size[] = { ++ CFG_UBOOT_SIZE, 0x4000, 0x200000, 0xa0000, 0x3d5c000-CFG_UBOOT_SIZE, 0 }; ++char *dynpart_names[] = { ++ "u-boot", "u-boot_env", "kernel", "splash", "rootfs", NULL }; ++ +Index: u-boot/board/neo1973/gta01/gta01.c +=================================================================== +--- u-boot.orig/board/neo1973/gta01/gta01.c ++++ u-boot/board/neo1973/gta01/gta01.c +@@ -429,3 +434,14 @@ + return 0; + } + ++ ++/* The sum of all part_size[]s must equal to the NAND size, i.e., 0x4000000. ++ "initrd" is sized such that it can hold two uncompressed 16 bit 640*480 ++ images: 640*480*2*2 = 1228800 < 1245184. */ ++ ++unsigned int dynpart_size[] = { ++ CFG_UBOOT_SIZE, 0x4000, 0x200000, 0xa0000, 0x3d5c000-CFG_UBOOT_SIZE, 0 }; ++char *dynpart_names[] = { ++ "u-boot", "u-boot_env", "kernel", "splash", "rootfs", NULL }; ++ ++ +Index: u-boot/include/configs/qt2410.h +=================================================================== +--- u-boot.orig/include/configs/qt2410.h ++++ u-boot/include/configs/qt2410.h +@@ -283,5 +283,7 @@ + + #define MTDIDS_DEFAULT "nand0=qt2410-nand" + #define MTPARTS_DEFAULT "qt2410-nand:192k(u-boot),8k(u-boot_env),2M(kernel),2M(splash),-(jffs2)" ++#define CFG_NAND_DYNPART_MTD_KERNEL_NAME "qt2410-nand" ++#define CONFIG_NAND_DYNPART + + #endif /* __CONFIG_H */ |