diff options
Diffstat (limited to 'apps/plugins')
| -rw-r--r-- | apps/plugins/rockbox_flash.c | 151 |
1 files changed, 80 insertions, 71 deletions
diff --git a/apps/plugins/rockbox_flash.c b/apps/plugins/rockbox_flash.c index c942683..a6efc24 100644 --- a/apps/plugins/rockbox_flash.c +++ b/apps/plugins/rockbox_flash.c @@ -7,9 +7,10 @@ * \/ \/ \/ \/ \/ * $Id$ * -* Plugin for reprogramming only the second Rockbox image. +* Plugin for reprogramming only the second image in Flash ROM. +* !!! DON'T MESS WITH THIS CODE UNLESS YOU'RE ABSOLUTELY SHURE WHAT YOU DO !!! * -* Copyright (C) 2003 Jörg Hohensohn [IDC]Dragon +* Copyright (C) 2003 Jörg Hohensohn aka [IDC]Dragon * * All files in this archive are subject to the GNU General Public License. * See the file COPYING in the source tree root for full license agreement. @@ -78,8 +79,7 @@ typedef struct static struct plugin_api* rb; /* here is a global api struct pointer */ -#define SEC_SIZE 4096 /* size of one flash sector */ -static UINT8 sector[SEC_SIZE]; /* better not place this on the stack... */ +static UINT8* sector; /* better not place this on the stack... */ /***************** Flash Functions *****************/ @@ -89,25 +89,25 @@ bool ReadID(volatile UINT8* pBase, UINT8* pManufacturerID, UINT8* pDeviceID) { UINT8 not_manu, not_id; /* read values before switching to ID mode */ UINT8 manu, id; /* read values when in ID mode */ - + pBase = (UINT8*)((UINT32)pBase & 0xFFF80000); /* round down to 512k align, to make sure */ - + not_manu = pBase[0]; /* read the normal content */ not_id = pBase[1]; /* should be 'A' (0x41) and 'R' (0x52) from the "ARCH" marker */ - + pBase[0x5555] = 0xAA; /* enter command mode */ pBase[0x2AAA] = 0x55; pBase[0x5555] = 0x90; /* ID command */ rb->sleep(HZ/50); /* Atmel wants 20ms pause here */ - + manu = pBase[0]; id = pBase[1]; pBase[0] = 0xF0; /* reset flash (back to normal read mode) */ rb->sleep(HZ/50); /* Atmel wants 20ms pause here */ - + /* I assume success if the obtained values are different from the normal flash content. This is not perfectly bulletproof, they could theoretically be the same by chance, causing us to fail. */ @@ -120,46 +120,46 @@ bool ReadID(volatile UINT8* pBase, UINT8* pManufacturerID, UINT8* pDeviceID) return false; /* fail */ } -/* eraze the sector which contains the given address */ -bool ErazeSector(volatile UINT8* pAddr) +/* erase the sector which contains the given address */ +bool EraseSector(volatile UINT8* pAddr) { volatile UINT8* pBase = (UINT8*)((UINT32)pAddr & 0xFFF80000); /* round down to 512k align */ unsigned timeout = 43000; /* the timeout loop should be no less than 25ms */ - + pBase[0x5555] = 0xAA; /* enter command mode */ pBase[0x2AAA] = 0x55; - pBase[0x5555] = 0x80; /* eraze command */ + pBase[0x5555] = 0x80; /* erase command */ pBase[0x5555] = 0xAA; /* enter command mode */ pBase[0x2AAA] = 0x55; - *pAddr = 0x30; /* eraze the sector */ + *pAddr = 0x30; /* erase the sector */ /* I counted 7 instructions for this loop -> min. 0.58 us per round Plus memory waitstates it will be much more, gives margin */ - while (*pAddr != 0xFF && --timeout); /* poll for erazed */ + while (*pAddr != 0xFF && --timeout); /* poll for erased */ return (timeout != 0); } -/* address must be in an erazed location */ +/* address must be in an erased location */ inline bool ProgramByte(volatile UINT8* pAddr, UINT8 data) { unsigned timeout = 35; /* the timeout loop should be no less than 20us */ - + if (~*pAddr & data) /* just a safety feature, not really necessary */ return false; /* can't set any bit from 0 to 1 */ - + FB[0x5555] = 0xAA; /* enter command mode */ FB[0x2AAA] = 0x55; FB[0x5555] = 0xA0; /* byte program command */ - + *pAddr = data; - + /* I counted 7 instructions for this loop -> min. 0.58 us per round Plus memory waitstates it will be much more, gives margin */ while (*pAddr != data && --timeout); /* poll for programmed */ - + return (timeout != 0); } @@ -167,10 +167,10 @@ inline bool ProgramByte(volatile UINT8* pAddr, UINT8 data) bool GetFlashInfo(tFlashInfo* pInfo) { rb->memset(pInfo, 0, sizeof(tFlashInfo)); - + if (!ReadID(FB, &pInfo->manufacturer, &pInfo->id)) return false; - + if (pInfo->manufacturer == 0xBF) /* SST */ { if (pInfo->id == 0xD6) @@ -241,7 +241,7 @@ tImageHeader* GetSecondImage(void) if (pImage1->size != 0) { - /* success, we have a second image */ + /* success, we have a second image */ pos = (UINT32)pImage1 + sizeof(tImageHeader) + pImage1->size; if (((pos + SECTORSIZE-1) & ~(SECTORSIZE-1)) != pos) { /* not sector-aligned */ @@ -264,7 +264,7 @@ tCheckResult CheckImageFile(char* filename, int space, tImageHeader* pHeader) int fileread = 0; /* total size as read from the file */ int read; /* how many for this sector */ - + /* magic file header for compressed files */ static const UINT8 magic[8] = { 0x00,0xe9,0x55,0x43,0x4c,0xff,0x01,0x1a }; UINT8 ucl_header[UCL_HEADER]; @@ -272,7 +272,7 @@ tCheckResult CheckImageFile(char* filename, int space, tImageHeader* pHeader) fd = rb->open(filename, O_RDONLY); if (fd < 0) return eFileNotFound; - + filesize = rb->filesize(fd); if (filesize - (int)sizeof(ucl_header) - 8 > space) { @@ -284,9 +284,9 @@ tCheckResult CheckImageFile(char* filename, int space, tImageHeader* pHeader) rb->close(fd); return eTooSmall; } - + /* do some sanity checks */ - + read = rb->read(fd, ucl_header, sizeof(ucl_header)); fileread += read; if (read != sizeof(ucl_header)) @@ -294,7 +294,7 @@ tCheckResult CheckImageFile(char* filename, int space, tImageHeader* pHeader) rb->close(fd); return eReadErr; } - + /* compare the magic header */ for (i=0; i<8; i++) { @@ -304,7 +304,7 @@ tCheckResult CheckImageFile(char* filename, int space, tImageHeader* pHeader) return eNotUCL; } } - + /* check for supported algorithm */ if (ucl_header[12] != 0x2E) { @@ -318,10 +318,10 @@ tCheckResult CheckImageFile(char* filename, int space, tImageHeader* pHeader) rb->close(fd); return eMultiBlocks; } - + if (Read32(ucl_header + 18) > pHeader->size) /* compare with uncompressed size */ - { /* normal case */ + { /* normal case */ pHeader->flags = 0x00000001; /* flags for UCL compressed */ } else @@ -333,12 +333,12 @@ tCheckResult CheckImageFile(char* filename, int space, tImageHeader* pHeader) /* check if we can read the whole file */ do { - read = rb->read(fd, sector, SEC_SIZE); + read = rb->read(fd, sector, SECTORSIZE); fileread += read; - } while (read == SEC_SIZE); + } while (read == SECTORSIZE); rb->close(fd); - + if (fileread != filesize) return eReadErr; @@ -358,7 +358,7 @@ unsigned ProgramImageFile(char* filename, UINT8* pos, int fd; int read; /* how many for this sector */ unsigned failures = 0; - + fd = rb->open(filename, O_RDONLY); if (fd < 0) return false; @@ -366,17 +366,17 @@ unsigned ProgramImageFile(char* filename, UINT8* pos, /* no error checking necessary here, we checked for minimum size already */ rb->lseek(fd, start, SEEK_SET); /* go to start position */ - + *(tImageHeader*)sector = *pImageHeader; /* copy header into sector buffer */ read = rb->read(fd, sector + sizeof(tImageHeader), - SEC_SIZE - sizeof(tImageHeader)); /* payload behind */ + SECTORSIZE - sizeof(tImageHeader)); /* payload behind */ size -= read; read += sizeof(tImageHeader); /* to be programmed, but not part of the file */ do { - if (!ErazeSector(pos)) + if (!EraseSector(pos)) { /* nothing we can do, let the programming count the errors */ } @@ -389,14 +389,14 @@ unsigned ProgramImageFile(char* filename, UINT8* pos, } } - pos += SEC_SIZE; - read = rb->read(fd, sector, (size > SEC_SIZE) ? SEC_SIZE : size); + pos += SECTORSIZE; + read = rb->read(fd, sector, (size > SECTORSIZE) ? SECTORSIZE : size); /* payload for next sector */ size -= read; } while (read > 0); rb->close(fd); - + return failures; } @@ -408,7 +408,7 @@ unsigned VerifyImageFile(char* filename, UINT8* pos, int fd; int read; /* how many for this sector */ unsigned failures = 0; - + fd = rb->open(filename, O_RDONLY); if (fd < 0) return false; @@ -416,11 +416,11 @@ unsigned VerifyImageFile(char* filename, UINT8* pos, /* no error checking necessary here, we checked for minimum size already */ rb->lseek(fd, start, SEEK_SET); /* go to start position */ - + *(tImageHeader*)sector = *pImageHeader; /* copy header into sector buffer */ read = rb->read(fd, sector + sizeof(tImageHeader), - SEC_SIZE - sizeof(tImageHeader)); /* payload behind */ + SECTORSIZE - sizeof(tImageHeader)); /* payload behind */ size -= read; read += sizeof(tImageHeader); /* to be programmed, but not part of the @@ -436,8 +436,8 @@ unsigned VerifyImageFile(char* filename, UINT8* pos, } } - pos += SEC_SIZE; - read = rb->read(fd, sector, (size > SEC_SIZE) ? SEC_SIZE : size); + pos += SECTORSIZE; + read = rb->read(fd, sector, (size > SECTORSIZE) ? SECTORSIZE : size); /* payload for next sector */ size -= read; } while (read); @@ -455,7 +455,7 @@ unsigned VerifyImageFile(char* filename, UINT8* pos, void ShowFlashInfo(tFlashInfo* pInfo, tImageHeader* pImageHeader) { char buf[32]; - + if (!pInfo->manufacturer) { rb->lcd_puts(0, 0, "Flash: M=?? D=??"); @@ -481,10 +481,10 @@ void ShowFlashInfo(tFlashInfo* pInfo, tImageHeader* pImageHeader) ((UINT8*)pImageHeader - FB) / 1024); rb->lcd_puts(0, 1, buf); } - else - { + else + { rb->lcd_puts(0, 1, "No image found!"); - } + } rb->lcd_update(); } @@ -500,9 +500,18 @@ void DoUserDialog(char* filename) int rc; /* generic return code */ UINT32 space, aligned_size, true_size; UINT8* pos; + int memleft; rb->lcd_setfont(FONT_SYSFIXED); - + + /* "allocate" memory */ + sector = rb->plugin_get_buffer(&memleft); + if (memleft < SECTORSIZE) /* need buffer for a flash sector */ + { + rb->splash(HZ*3, 0, true, "Out of memory"); + return; /* exit */ + } + pos = (void*)GetSecondImage(); rc = GetFlashInfo(&FlashInfo); @@ -531,11 +540,11 @@ void DoUserDialog(char* filename) { return; } - + rb->lcd_clear_display(); rb->lcd_puts(0, 0, "checking..."); rb->lcd_update(); - + space = FlashInfo.size - (pos-FB + sizeof(ImageHeader)); /* size minus start */ @@ -545,43 +554,43 @@ void DoUserDialog(char* filename) case eOK: rb->lcd_puts(0, 1, "File OK."); break; - case eNotUCL: + case eNotUCL: rb->lcd_puts(0, 1, "File not UCL "); rb->lcd_puts(0, 2, "compressed."); rb->lcd_puts(0, 3, "Use uclpack --2e"); rb->lcd_puts(0, 4, " --10 rockbox.bin"); break; - case eWrongAlgorithm: + case eWrongAlgorithm: rb->lcd_puts(0, 1, "Wrong algorithm"); rb->lcd_puts(0, 2, "for compression."); rb->lcd_puts(0, 3, "Use uclpack --2e"); rb->lcd_puts(0, 4, " --10 rockbox.bin"); break; - case eFileNotFound: + case eFileNotFound: rb->lcd_puts(0, 1, "File not found:"); rb->lcd_puts_scroll(0, 2, filename); break; - case eTooBig: + case eTooBig: rb->lcd_puts(0, 1, "File too big,"); rb->lcd_puts(0, 2, "won't fit in chip."); break; - case eTooSmall: + case eTooSmall: rb->lcd_puts(0, 1, "File too small."); rb->lcd_puts(0, 2, "Incomplete?"); break; - case eReadErr: + case eReadErr: rb->lcd_puts(0, 1, "File read error."); break; - case eMultiBlocks: + case eMultiBlocks: rb->lcd_puts(0, 1, "File invalid."); rb->lcd_puts(0, 2, "Blocksize"); rb->lcd_puts(0, 3, " too small?"); break; - default: + default: rb->lcd_puts(0, 1, "Check failed."); break; } - + if (rc == eOK) { /* was OK */ rb->lcd_puts(0, 6, "[F2] to program"); @@ -591,7 +600,7 @@ void DoUserDialog(char* filename) { /* error occured */ rb->lcd_puts(0, 6, "Any key to exit"); } - + rb->lcd_update(); button = rb->button_get(true); @@ -613,7 +622,7 @@ void DoUserDialog(char* filename) rb->lcd_clear_display(); rb->lcd_puts(0, 0, "Programming..."); rb->lcd_update(); - + rc = ProgramImageFile(filename, pos, &ImageHeader, UCL_HEADER, true_size); if (rc) { /* errors */ @@ -630,9 +639,9 @@ void DoUserDialog(char* filename) rb->lcd_clear_display(); rb->lcd_puts(0, 0, "Verifying..."); rb->lcd_update(); - + rc = VerifyImageFile(filename, pos, &ImageHeader, UCL_HEADER, true_size); - + rb->lcd_clear_display(); if (rc == 0) { @@ -665,20 +674,20 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parameter) it test that the api version and model the plugin was compiled for matches the machine it is running on */ TEST_PLUGIN_API(api); - + if (parameter == NULL) filename = DEFAULT_FILENAME; else filename = (char*) parameter; rb = api; /* copy to global api pointer */ - + /* now go ahead and have fun! */ DoUserDialog(filename); return PLUGIN_OK; } -#endif +#endif // #ifdef HAVE_LCD_BITMAP -#endif +#endif // #ifndef SIMULATOR |