diff options
| -rw-r--r-- | bootloader/main-e200r-installer.c | 82 |
1 files changed, 72 insertions, 10 deletions
diff --git a/bootloader/main-e200r-installer.c b/bootloader/main-e200r-installer.c index c1162c9ebf..518f1db87f 100644 --- a/bootloader/main-e200r-installer.c +++ b/bootloader/main-e200r-installer.c @@ -19,6 +19,7 @@ * KIND, either express or implied. * ****************************************************************************/ + #include <stdio.h> #include <stdlib.h> #include "common.h" @@ -43,9 +44,47 @@ char version[] = APPSVERSION; #define START_SECTOR_OF_ROM 1 #define ROMSECTOR_TO_HACK 63 #define HACK_OFFSET 498 -#define KNOWN_CRC32 0x5a09c266 -char knownBytes[] = {0x00, 0x24, 0x07, 0xe1}; -char changedBytes[] = {0xc0, 0x46, 0xc0, 0x46 }; +#define KNOWN_CRC32 0x5a09c266 /* E200R CRC before patching */ +#define PATCHED_CRC32 0x0a162b34 /* E200R CRC after patching */ + +static unsigned char knownBytes[] = {0x00, 0x24, 0x07, 0xe1}; +static unsigned char changedBytes[] = {0xc0, 0x46, 0xc0, 0x46 }; + +/* + CRC32s of sector 63 from E200 bootloaders - so we can tell users if they're + trying to use e200rpatcher with a vanilla e200. + + These are all known E200 bootloaders as of 8 November 2007. + +*/ + +static uint32_t e200_crcs[] = +{ + 0xbeceba58, + 0x4e6b038f, + 0x5e4f4219, + 0xae087742, + 0x3dd94852, + 0x72fa69f3, + 0x4ce0d10b +}; + +#define NUM_E200_CRCS ((int)((sizeof(e200_crcs) / sizeof(uint32_t)))) + +static bool is_e200(uint32_t crc) +{ + int i; + + for (i = 0 ; i < NUM_E200_CRCS ; i++) + { + if (crc == e200_crcs[i]) + return true; + } + + return false; +} + + void* main(void) { int i; @@ -54,6 +93,7 @@ void* main(void) int crc32; char sector[512]; struct partinfo* pinfo; + chksum_crc32gentab (); system_init(); @@ -81,11 +121,14 @@ void* main(void) i=ata_init(); disk_init(IF_MV(0)); num_partitions = disk_mount_all(); + if (num_partitions<=0) { error(EDISK,num_partitions); } + pinfo = disk_partinfo(1); + #if 0 /* not needed in release builds */ printf("--- Partition info ---"); printf("start: %x", pinfo->start); @@ -93,26 +136,39 @@ void* main(void) printf("type: %x", pinfo->type); printf("reading: %x", (START_SECTOR_OF_ROM + ROMSECTOR_TO_HACK)*512); #endif + ata_read_sectors(IF_MV2(0,) pinfo->start + START_SECTOR_OF_ROM + ROMSECTOR_TO_HACK, 1 , sector); crc32 = chksum_crc32 (sector, 512); + #if 0 /* not needed in release builds */ printf("--- Hack Status ---"); printf("Sector checksum: %x", crc32); #endif - if ((crc32 == KNOWN_CRC32) && - !memcmp(§or[HACK_OFFSET], knownBytes, + + if (crc32 == PATCHED_CRC32) + { + /* Bootloader already patched */ + printf("Firmware unlocked"); + printf("Proceed to Step 2"); + } else if ((crc32 == KNOWN_CRC32) && + !memcmp(§or[HACK_OFFSET], knownBytes, sizeof(knownBytes)/sizeof(*knownBytes))) { - + /* E200R bootloader detected - patch it */ memcpy(§or[HACK_OFFSET], changedBytes, sizeof(changedBytes)/sizeof(*changedBytes)); ata_write_sectors(IF_MV2(0,) pinfo->start + START_SECTOR_OF_ROM + ROMSECTOR_TO_HACK, 1 , sector); - printf("Firmware Unlocked"); + printf("Already unlocked"); printf("Proceed to Step 2"); + } else if (is_e200(crc32)) + { + printf("Vanilla E200 detected!"); + printf("Please install using"); + printf("Sansapatcher"); } else { @@ -120,14 +176,20 @@ void* main(void) printf("Rockbox installer cannot"); printf("continue"); } + + /* Turn button lights off */ GPIOG_OUTPUT_VAL &=~0x80; + printf(""); + if (button_hold()) printf("Release Hold and"); + printf("Press any key to shutdown"); - while(button_read_device() == BUTTON_NONE) - ; + + while(button_read_device() == BUTTON_NONE); + power_off(); + return NULL; } - |