Beagleboard Touch Ups

misaacs's Blog

In a non-bug related news...Last week we got some beagleboards in here to play around with. After been knee deep in u-boot work for quite some time, I noticed two pretty serious (for me at least) short-commings on the beagle's u-boot environment.

1) No command history...

2) When booting from the mmc/sd card, the Kernel can only boot off fat partitions...

Fortunately the first issue is just a configuration file fix. The second issue was also easy to fix but required some minor detective work. Checkout the u-boot-omap3 tree (Instructions here: http://elinux.org/BeagleBoard#U-Boot) and apply the patch below if you want to boot off ext2/ext3 partitions using ext2load, and you want command history.

Try it, you might like it...

--- a/drivers/mmc/omap3_mmc.c +++ b/drivers/mmc/omap3_mmc.c @@ -520,9 +520,11 @@ unsigned char configure_mmc(mmc_card_data *mmc_card_cur) unsigned long mmc_bread(int dev_num, unsigned long blknr, lbaint_t blkcnt, void *dst) { + //printf("mmc_bread...\n"); omap_mmc_read_sect(blknr, (blkcnt * MMCSD_SECTOR_SIZE), &cur_card_data, (unsigned long *) dst); - return 1; + //return 1; + return blkcnt; } int mmc_legacy_init(int verbose) @@ -530,6 +532,7 @@ int mmc_legacy_init(int verbose) if (configure_mmc(&cur_card_data) != 1) return 1; + printf("mmc_legacy_init...\n"); mmc_blk_dev.if_type = IF_TYPE_MMC; mmc_blk_dev.part_type = PART_TYPE_DOS; mmc_blk_dev.dev = 0; --- a/include/configs/omap3_beagle.h +++ b/include/configs/omap3_beagle.h @@ -202,6 +202,8 @@ */ #define V_PROMPT "OMAP3 beagleboard.org # " +#define CONFIG_CMDLINE_EDITING + #define CONFIG_SYS_LONGHELP /* undef to save memory */ #define CONFIG_SYS_HUSH_PARSER /* use "hush" command parser */ #define CONFIG_SYS_PROMPT_HUSH_PS2 "> "

Did I mention that the beagleboard is pretty neat? Nice work by those TI chaps...

--Izzy

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