Wednesday, October 17, 2012

Judge for yourselves

Hi guys, just leaving this here, so you can judge for yourselves what's going on:
console [ttySZ0] enabled, bootconsole disabled
ZPUINO: UART at 0x8800000, irq 1
brd: module loaded
loop: module loaded
Registering ZPUino SPI driver
ZPUino: probing for SPI controller
zpuino_spi zpuino_spi.0: master is unqueued, this is deprecated
zpuino_spi zpuino_spi.0: at 0x0A800000
ZPUino. SPI controller initialized 00281000
mousedev: PS/2 mouse device common for all mice
mmc_spi spi0.0: SD/MMC host mmc0, no DMA, cd polling
Waiting for root device /dev/mmcblk0p1...
mmc_spi spi0.0: setup: unsupported mode bits 4
mmc_spi spi0.0: can't change chip-select polarity
mmc0: card lacks mandatory switch function, performance might suffer.
mmc0: new SDHC card on SPI
mmcblk0: mmc0:0000 SD    30.8 GiB 
 mmcblk0: p1
VFS: Mounted root (ext2 filesystem) readonly on device 179:1.
Freeing init memory: 64K (1000 - 11000)

BusyBox v1.20.2 (2012-10-17 09:44:15 WEST) hush - the humble shell

/ # uname -a
Linux (none) 3.4.0-uc0 #533 PREEMPT Wed Oct 17 19:04:33 WEST 2012 zpu GNU/Linux
/ #


  1. Is SD card read-only?

  2. Hi Jack,

    The card is simulated, and forced into read-only mode because I had no time to implement the SDHC (note - the card itself) write logic. When connected to a read SDHC card it will work as expected.

    But at this point in boot, everything is read-only anyway, because we ought to check the filesystem consistency prior to remounting it read-write.