Re: [flashrom] [PATCH] Refactor unlocking of many chips with locking at register space address +2.
On Thu, 29 May 2014 19:13:33 +0200 Stefan Tauner stefan.tauner@alumni.tuwien.ac.at wrote:
This includes PMC Pm49*, SST 49LF00*, ST M50* and Winbond W39* family. The erase and write test status bits of all affected chips have been reset.
Signed-off-by: Carl-Daniel Hailfinger c-d.hailfinger.devel.2006@gmx.net Signed-off-by: Stefan Tauner stefan.tauner@alumni.tuwien.ac.at
Also, the W39V040FA's unlock method should be unlock_regspace2_uniform_64k() instead of unlock_sst_fwhub(). Fixed locally.
BTW, the whole sst_fwhub.c could be unified with the rest too. They are just missing the read lock bit AFAICS.
This includes PMC Pm49*, SST 49LF00*, ST M50* and Winbond W39* family. The erase and write test status bits of all affected chips have been reset.
Signed-off-by: Carl-Daniel Hailfinger c-d.hailfinger.devel.2006@gmx.net Signed-off-by: Stefan Tauner stefan.tauner@alumni.tuwien.ac.at --- 82802ab.c | 11 ---- Makefile | 2 +- chipdrivers.h | 19 +++--- flashchips.c | 87 +++++++++++++++------------ jedec.c | 185 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++- pm49fl00x.c | 53 ----------------- sst49lfxxxc.c | 39 ------------- stm50.c | 55 ----------------- w39.c | 112 ++--------------------------------- 9 files changed, 248 insertions(+), 315 deletions(-) delete mode 100644 pm49fl00x.c
diff --git a/82802ab.c b/82802ab.c index 9e39852..e450b5d 100644 --- a/82802ab.c +++ b/82802ab.c @@ -108,17 +108,6 @@ uint8_t wait_82802ab(struct flashctx *flash) return status; }
-int unlock_82802ab(struct flashctx *flash) -{ - int i; - //chipaddr wrprotect = flash->virtual_registers + page + 2; - - for (i = 0; i < flash->chip->total_size * 1024; i+= flash->chip->page_size) - chip_writeb(flash, 0, flash->virtual_registers + i + 2); - - return 0; -} - int erase_block_82802ab(struct flashctx *flash, unsigned int page, unsigned int pagesize) { diff --git a/Makefile b/Makefile index 64798c9..8f2d68d 100644 --- a/Makefile +++ b/Makefile @@ -351,7 +351,7 @@ endif # Flash chip drivers and bus support infrastructure.
CHIP_OBJS = jedec.o stm50.o w39.o w29ee011.o \ - sst28sf040.o m29f400bt.o 82802ab.o pm49fl00x.o \ + sst28sf040.o m29f400bt.o 82802ab.o \ sst49lfxxxc.o sst_fwhub.o flashchips.o spi.o spi25.o spi25_statusreg.o \ opaque.o sfdp.o en29lv640b.o at45db.o
diff --git a/chipdrivers.h b/chipdrivers.h index 03d922d..57b1340 100644 --- a/chipdrivers.h +++ b/chipdrivers.h @@ -131,7 +131,6 @@ int probe_82802ab(struct flashctx *flash); int erase_block_82802ab(struct flashctx *flash, unsigned int page, unsigned int pagesize); int write_82802ab(struct flashctx *flash, const uint8_t *buf, unsigned int start, unsigned int len); void print_status_82802ab(uint8_t status); -int unlock_82802ab(struct flashctx *flash); int unlock_28f004s5(struct flashctx *flash); int unlock_lh28f008bjt(struct flashctx *flash);
@@ -146,15 +145,20 @@ int erase_sector_jedec(struct flashctx *flash, unsigned int page, unsigned int p int erase_block_jedec(struct flashctx *flash, unsigned int page, unsigned int blocksize); int erase_chip_block_jedec(struct flashctx *flash, unsigned int page, unsigned int blocksize);
+int unlock_regspace2_uniform_32k(struct flashctx *flash); +int unlock_regspace2_uniform_64k(struct flashctx *flash); +int unlock_regspace2_block_eraser_0(struct flashctx *flash); +int unlock_regspace2_block_eraser_1(struct flashctx *flash); +int unlock_regspace2_block(const struct flashctx *flash, chipaddr off); +int printlock_regspace2_uniform_64k(struct flashctx *flash); +int printlock_regspace2_block_eraser_0(struct flashctx *flash); +int printlock_regspace2_block_eraser_1(struct flashctx *flash); + /* m29f400bt.c */ int probe_m29f400bt(struct flashctx *flash); int write_m29f400bt(struct flashctx *flash, const uint8_t *buf, unsigned int start, unsigned int len); void protect_m29f400bt(struct flashctx *flash, chipaddr bios);
-/* pm49fl00x.c */ -int unlock_49fl00x(struct flashctx *flash); -int lock_49fl00x(struct flashctx *flash); - /* sst28sf040.c */ int erase_chip_28sf040(struct flashctx *flash, unsigned int addr, unsigned int blocklen); int erase_sector_28sf040(struct flashctx *flash, unsigned int address, unsigned int sector_size); @@ -164,7 +168,6 @@ int protect_28sf040(struct flashctx *flash);
/* sst49lfxxxc.c */ int erase_sector_49lfxxxc(struct flashctx *flash, unsigned int address, unsigned int sector_size); -int unlock_49lfxxxc(struct flashctx *flash);
/* sst_fwhub.c */ int printlock_sst_fwhub(struct flashctx *flash); @@ -184,8 +187,6 @@ int printlock_w39v040fc(struct flashctx *flash); int printlock_w39v080a(struct flashctx *flash); int printlock_w39v080fa(struct flashctx *flash); int printlock_w39v080fa_dual(struct flashctx *flash); -int unlock_w39v040fb(struct flashctx *flash); -int unlock_w39v080fa(struct flashctx *flash); int printlock_at49f(struct flashctx *flash);
/* w29ee011.c */ @@ -193,8 +194,6 @@ int probe_w29ee011(struct flashctx *flash);
/* stm50.c */ int erase_sector_stm50(struct flashctx *flash, unsigned int block, unsigned int blocksize); -int unlock_stm50_uniform(struct flashctx *flash); -int unlock_stm50_nonuniform(struct flashctx *flash);
/* en29lv640b.c */ int probe_en29lv640b(struct flashctx *flash); diff --git a/flashchips.c b/flashchips.c index 3689de5..489f7c3 100644 --- a/flashchips.c +++ b/flashchips.c @@ -1382,7 +1382,7 @@ const struct flashchip flashchips[] = { .total_size = 512, .page_size = 64 * 1024, .feature_bits = FEATURE_REGISTERMAP | FEATURE_EITHER_RESET, - .tested = TEST_OK_PREW, + .tested = TEST_OK_PR, .probe = probe_jedec, .probe_timing = TIMING_ZERO, /* routine is wrapper to probe_jedec (pm49fl00x.c) */ .block_erasers = @@ -1395,7 +1395,7 @@ const struct flashchip flashchips[] = { .block_erase = erase_chip_block_jedec, } }, - .unlock = unlock_49fl00x, + .unlock = unlock_regspace2_uniform_64k, .write = write_jedec_1, .read = read_memmapped, .voltage = {3000, 3600}, @@ -5979,7 +5979,7 @@ const struct flashchip flashchips[] = { .total_size = 512, .page_size = 64 * 1024, .feature_bits = FEATURE_REGISTERMAP, - .tested = TEST_OK_PREW, + .tested = TEST_OK_PR, .probe = probe_82802ab, .probe_timing = TIMING_IGNORED, /* routine does not use probe_timing (82802ab.c) */ .block_erasers = @@ -5989,7 +5989,7 @@ const struct flashchip flashchips[] = { .block_erase = erase_block_82802ab, }, }, - .unlock = unlock_82802ab, + .unlock = unlock_regspace2_uniform_64k, .write = write_82802ab, .read = read_memmapped, .voltage = {3000, 3600}, @@ -6014,7 +6014,7 @@ const struct flashchip flashchips[] = { .block_erase = erase_block_82802ab, }, }, - .unlock = unlock_82802ab, + .unlock = unlock_regspace2_uniform_64k, .write = write_82802ab, .read = read_memmapped, .voltage = {3000, 3600}, @@ -9202,7 +9202,7 @@ const struct flashchip flashchips[] = { .total_size = 256, .page_size = 16 * 1024, .feature_bits = FEATURE_REGISTERMAP | FEATURE_EITHER_RESET, - .tested = TEST_OK_PREW, + .tested = TEST_OK_PR, .probe = probe_jedec, .probe_timing = TIMING_ZERO, /* routine is wrapper to probe_jedec (pm49fl00x.c) */ .block_erasers = @@ -9218,7 +9218,7 @@ const struct flashchip flashchips[] = { .block_erase = erase_chip_block_jedec, } }, - .unlock = unlock_49fl00x, + .unlock = unlock_regspace2_uniform_32k, .write = write_jedec_1, .read = read_memmapped, .voltage = {3000, 3600}, @@ -9233,7 +9233,7 @@ const struct flashchip flashchips[] = { .total_size = 512, .page_size = 64 * 1024, .feature_bits = FEATURE_REGISTERMAP | FEATURE_EITHER_RESET, - .tested = TEST_OK_PREW, + .tested = TEST_OK_PR, .probe = probe_jedec, .probe_timing = TIMING_ZERO, /* routine is wrapper to probe_jedec (pm49fl00x.c) */ .block_erasers = @@ -9249,7 +9249,7 @@ const struct flashchip flashchips[] = { .block_erase = erase_chip_block_jedec, } }, - .unlock = unlock_49fl00x, + .unlock = unlock_regspace2_uniform_64k, .write = write_jedec_1, .read = read_memmapped, .voltage = {3000, 3600}, @@ -9562,7 +9562,7 @@ const struct flashchip flashchips[] = { .block_erase = NULL, /* 30 D0, only in A/A mux mode */ }, }, - .unlock = unlock_82802ab, + .unlock = unlock_regspace2_uniform_64k, .write = write_82802ab, .read = read_memmapped, .voltage = {3000, 3600}, @@ -11104,7 +11104,8 @@ const struct flashchip flashchips[] = { .block_erase = erase_block_82802ab, } }, - .unlock = unlock_49lfxxxc, + .printlock = printlock_regspace2_block_eraser_1, + .unlock = unlock_regspace2_block_eraser_1, .write = write_82802ab, .read = read_memmapped, .voltage = {3000, 3600}, @@ -11169,7 +11170,8 @@ const struct flashchip flashchips[] = { .block_erase = erase_block_82802ab, } }, - .unlock = unlock_49lfxxxc, + .printlock = printlock_regspace2_block_eraser_1, + .unlock = unlock_regspace2_block_eraser_1, .write = write_82802ab, .read = read_memmapped, .voltage = {3000, 3600}, @@ -11184,7 +11186,7 @@ const struct flashchip flashchips[] = { .total_size = 2048, .page_size = 4 * 1024, .feature_bits = FEATURE_REGISTERMAP, - .tested = TEST_OK_PREW, + .tested = TEST_OK_PR, .probe = probe_82802ab, .probe_timing = TIMING_IGNORED, /* routine doesn't use probe_timing (sst49lfxxxc.c) */ .block_erasers = @@ -11202,7 +11204,8 @@ const struct flashchip flashchips[] = { .block_erase = erase_block_82802ab, } }, - .unlock = unlock_49lfxxxc, + .printlock = printlock_regspace2_block_eraser_1, + .unlock = unlock_regspace2_block_eraser_1, .write = write_82802ab, .read = read_memmapped, .voltage = {3000, 3600}, @@ -11307,7 +11310,7 @@ const struct flashchip flashchips[] = { .total_size = 512, .page_size = 64 * 1024, .feature_bits = FEATURE_EITHER_RESET | FEATURE_REGISTERMAP, - .tested = TEST_OK_PREW, + .tested = TEST_OK_PR, .probe = probe_jedec, .probe_timing = 1, /* 150ns */ .block_erasers = @@ -11323,7 +11326,7 @@ const struct flashchip flashchips[] = { .block_erase = NULL, } }, - .unlock = unlock_82802ab, + .unlock = unlock_regspace2_uniform_64k, .write = write_jedec_1, .read = read_memmapped, .voltage = {3000, 3600}, @@ -11368,7 +11371,7 @@ const struct flashchip flashchips[] = { .total_size = 2048, .page_size = 4 * 1024, .feature_bits = FEATURE_REGISTERMAP, - .tested = TEST_OK_PRE, + .tested = TEST_OK_PR, .probe = probe_82802ab, .probe_timing = TIMING_IGNORED, /* routine doesn't use probe_timing (sst49lfxxxc.c) */ .block_erasers = @@ -11386,7 +11389,8 @@ const struct flashchip flashchips[] = { .block_erase = erase_block_82802ab, } }, - .unlock = unlock_49lfxxxc, + .printlock = printlock_regspace2_block_eraser_1, + .unlock = unlock_regspace2_block_eraser_1, .write = write_82802ab, .read = read_memmapped, .voltage = {3000, 3600}, @@ -11654,7 +11658,7 @@ const struct flashchip flashchips[] = { } }, .write = write_82802ab, - .unlock = unlock_stm50_uniform, + .unlock = unlock_regspace2_uniform_64k, .read = read_memmapped, .voltage = {3000, 3600}, /* Also has 12V fast program & erase */ }, @@ -11687,7 +11691,7 @@ const struct flashchip flashchips[] = { } }, .write = write_82802ab, - .unlock = unlock_stm50_uniform, + .unlock = unlock_regspace2_uniform_64k, .read = read_memmapped, .voltage = {3000, 3600}, /* Also has 12V fast program & erase */ }, @@ -11701,7 +11705,7 @@ const struct flashchip flashchips[] = { .total_size = 1024, .page_size = 0, .feature_bits = FEATURE_REGISTERMAP, - .tested = TEST_OK_PRE, + .tested = TEST_OK_PR, .probe = probe_82802ab, .probe_timing = TIMING_FIXME, .block_erasers = @@ -11719,7 +11723,8 @@ const struct flashchip flashchips[] = { .block_erase = erase_block_82802ab, } }, - .unlock = unlock_stm50_nonuniform, + .printlock = printlock_regspace2_block_eraser_0, + .unlock = unlock_regspace2_block_eraser_0, .write = write_82802ab, .read = read_memmapped, .voltage = {3000, 3600}, /* Also has 12V fast program & erase */ @@ -11752,7 +11757,8 @@ const struct flashchip flashchips[] = { .block_erase = erase_block_82802ab, } }, - .unlock = unlock_stm50_nonuniform, + .printlock = printlock_regspace2_block_eraser_0, + .unlock = unlock_regspace2_block_eraser_0, .write = write_82802ab, .read = read_memmapped, .voltage = {3000, 3600}, /* Also has 12V fast program & erase */ @@ -11767,9 +11773,9 @@ const struct flashchip flashchips[] = { .total_size = 256, .page_size = 0, .feature_bits = FEATURE_REGISTERMAP, - .tested = TEST_UNTESTED, + .tested = TEST_OK_PR, .probe = probe_82802ab, - .probe_timing = TIMING_IGNORED, /* routine doesn't use probe_timing (sst49lfxxxc.c) */ + .probe_timing = TIMING_IGNORED, /* routine doesn't use probe_timing (82802ab.c) */ .block_erasers = { { @@ -11780,9 +11786,13 @@ const struct flashchip flashchips[] = { {16 * 1024, 1}, }, .block_erase = erase_block_82802ab, + }, { + .eraseblocks = { {256 * 1024, 1}, }, + .block_erase = NULL, /* Only in A/A mux mode */ } }, - .unlock = unlock_stm50_nonuniform, + .printlock = printlock_regspace2_block_eraser_0, + .unlock = unlock_regspace2_block_eraser_0, .write = write_82802ab, .read = read_memmapped, .voltage = {3000, 3600}, /* Also has 12V fast program & erase */ @@ -11807,7 +11817,7 @@ const struct flashchip flashchips[] = { .block_erase = erase_block_82802ab, } }, - .unlock = unlock_stm50_uniform, + .unlock = unlock_regspace2_uniform_64k, .write = write_82802ab, .read = read_memmapped, .voltage = {3000, 3600}, /* Also has 12V fast program & erase */ @@ -11832,7 +11842,7 @@ const struct flashchip flashchips[] = { .block_erase = erase_block_82802ab, } }, - .unlock = unlock_stm50_uniform, + .unlock = unlock_regspace2_uniform_64k, .write = write_82802ab, .read = read_memmapped, .voltage = {3000, 3600}, /* Also has 12V fast program & erase */ @@ -11847,7 +11857,7 @@ const struct flashchip flashchips[] = { .total_size = 1024, .page_size = 0, .feature_bits = FEATURE_REGISTERMAP, - .tested = TEST_OK_PREW, + .tested = TEST_OK_PR, .probe = probe_82802ab, .probe_timing = TIMING_IGNORED, /* routine doesn't use probe_timing (82802ab.c) */ .block_erasers = @@ -11857,7 +11867,7 @@ const struct flashchip flashchips[] = { .block_erase = erase_block_82802ab, } }, - .unlock = unlock_stm50_uniform, + .unlock = unlock_regspace2_uniform_64k, .write = write_82802ab, .read = read_memmapped, .voltage = {3000, 3600}, /* Also has 12V fast program & erase */ @@ -11882,7 +11892,7 @@ const struct flashchip flashchips[] = { .block_erase = erase_block_82802ab, } }, - .unlock = unlock_stm50_uniform, + .unlock = unlock_regspace2_uniform_64k, .write = write_82802ab, .read = read_memmapped, .voltage = {3000, 3600}, /* Also has 12V fast program & erase */ @@ -11913,7 +11923,8 @@ const struct flashchip flashchips[] = { .block_erase = erase_block_82802ab, } }, - .unlock = unlock_stm50_nonuniform, + .printlock = printlock_regspace2_block_eraser_0, + .unlock = unlock_regspace2_block_eraser_0, .write = write_82802ab, .read = read_memmapped, .voltage = {3000, 3600}, /* Also has 12V fast program & erase */ @@ -13181,7 +13192,7 @@ const struct flashchip flashchips[] = { .total_size = 512, .page_size = 64 * 1024, .feature_bits = FEATURE_REGISTERMAP | FEATURE_EITHER_RESET, - .tested = TEST_OK_PREW, + .tested = TEST_OK_PR, .probe = probe_jedec, .probe_timing = 10, .block_erasers = @@ -13198,7 +13209,7 @@ const struct flashchip flashchips[] = { } }, .printlock = printlock_w39v040fa, - .unlock = unlock_sst_fwhub, + .unlock = unlock_regspace2_uniform_64k, .write = write_jedec_1, .read = read_memmapped, .voltage = {3000, 3600}, @@ -13213,7 +13224,7 @@ const struct flashchip flashchips[] = { .total_size = 512, .page_size = 64 * 1024, .feature_bits = FEATURE_REGISTERMAP | FEATURE_EITHER_RESET, - .tested = TEST_OK_PREW, + .tested = TEST_OK_PR, .probe = probe_jedec, .probe_timing = 10, .block_erasers = @@ -13227,7 +13238,7 @@ const struct flashchip flashchips[] = { } }, .printlock = printlock_w39v040fb, - .unlock = unlock_w39v040fb, + .unlock = unlock_regspace2_uniform_64k, .write = write_jedec_1, .read = read_memmapped, .voltage = {3000, 3600}, /* Also has 12V fast program */ @@ -13418,7 +13429,7 @@ const struct flashchip flashchips[] = { .total_size = 1024, .page_size = 64 * 1024, .feature_bits = FEATURE_REGISTERMAP | FEATURE_EITHER_RESET, - .tested = TEST_OK_PREW, + .tested = TEST_OK_PR, .probe = probe_jedec, .probe_timing = 10, .block_erasers = @@ -13432,7 +13443,7 @@ const struct flashchip flashchips[] = { } }, .printlock = printlock_w39v080fa, - .unlock = unlock_w39v080fa, + .unlock = unlock_regspace2_uniform_64k, .write = write_jedec_1, .read = read_memmapped, .voltage = {3000, 3600}, /* Also has 12V fast program */ diff --git a/jedec.c b/jedec.c index 08cc88b..29fdae8 100644 --- a/jedec.c +++ b/jedec.c @@ -4,8 +4,9 @@ * Copyright (C) 2000 Silicon Integrated System Corporation * Copyright (C) 2006 Giampiero Giancipoli gianci@email.it * Copyright (C) 2006 coresystems GmbH info@coresystems.de - * Copyright (C) 2007 Carl-Daniel Hailfinger + * Copyright (C) 2007, 2011 Carl-Daniel Hailfinger * Copyright (C) 2009 Sean Nelson audiohacked@gmail.com + * Copyright (C) 2014 Stefan Tauner * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -510,3 +511,185 @@ int erase_chip_jedec(struct flashctx *flash) mask = getaddrmask(flash->chip); return erase_chip_jedec_common(flash, mask); } + +struct unlockblock { + unsigned int size; + unsigned int count; +}; + +typedef int (*unlockblock_func)(const struct flashctx *flash, chipaddr offset); +static int regspace2_walk_unlockblocks(const struct flashctx *flash, const struct unlockblock *block, unlockblock_func func) +{ + chipaddr off = flash->virtual_registers + 2; + while (block->count != 0) { + unsigned int j; + for (j = 0; j < block->count; j++) { + if (func(flash, off)) + return -1; + off += block->size; + } + block++; + } + return 0; +} + +#define REG2_RWLOCK ((1 << 2) | (1 << 0)) +#define REG2_LOCKDOWN (1 << 1) +#define REG2_MASK (REG2_RWLOCK | REG2_LOCKDOWN) + +static int printlock_regspace2_block(const struct flashctx *flash, chipaddr offset) +{ + chipaddr wrprotect = flash->virtual_registers + offset + 2; + uint8_t state = chip_readb(flash, wrprotect); + msg_cdbg("Lock status of block at 0x%0*" PRIxPTR " is ", PRIxPTR_WIDTH, offset); + switch (state & REG2_MASK) { + case 0: + msg_cdbg("Full Access.\n"); + break; + case 1: + msg_cdbg("Write Lock (Default State).\n"); + break; + case 2: + msg_cdbg("Locked Open (Full Access, Locked Down).\n"); + break; + case 3: + msg_cdbg("Write Lock, Locked Down.\n"); + break; + case 4: + msg_cdbg("Read Lock.\n"); + break; + case 5: + msg_cdbg("Read/Write Lock.\n"); + break; + case 6: + msg_cdbg("Read Lock, Locked Down.\n"); + break; + case 7: + msg_cdbg("Read/Write Lock, Locked Down.\n"); + break; + } + return 0; +} + +int printlock_regspace2_blocks(const struct flashctx *flash, const struct unlockblock *blocks) +{ + return regspace2_walk_unlockblocks(flash, blocks, &printlock_regspace2_block); +} + +static int printlock_regspace2_uniform(struct flashctx *flash, unsigned long block_size) +{ + const unsigned int elems = flash->chip->total_size * 1024 / block_size; + struct unlockblock blocks[2] = {{.size = block_size, .count = elems}}; + return regspace2_walk_unlockblocks(flash, blocks, &printlock_regspace2_block); +} + +int printlock_regspace2_uniform_64k(struct flashctx *flash) +{ + return printlock_regspace2_uniform(flash, 64 * 1024); +} + +int printlock_regspace2_block_eraser_0(struct flashctx *flash) +{ + // FIXME: this depends on the eraseblocks not to be filled up completely (i.e. to be null-terminated). + const struct unlockblock *unlockblocks = + (const struct unlockblock *)flash->chip->block_erasers[0].eraseblocks; + return regspace2_walk_unlockblocks(flash, unlockblocks, &printlock_regspace2_block); +} + +int printlock_regspace2_block_eraser_1(struct flashctx *flash) +{ + // FIXME: this depends on the eraseblocks not to be filled up completely (i.e. to be null-terminated). + const struct unlockblock *unlockblocks = + (const struct unlockblock *)flash->chip->block_erasers[1].eraseblocks; + return regspace2_walk_unlockblocks(flash, unlockblocks, &printlock_regspace2_block); +} + +static int changelock_regspace2_block(const struct flashctx *flash, chipaddr offset, uint8_t new_bits) +{ + chipaddr wrprotect = flash->virtual_registers + offset + 2; + uint8_t old; + + if (new_bits & ~REG2_MASK) { + msg_cerr("Invalid locking change 0x%02x requested at 0x%0*" PRIxPTR "! " + "Please report a bug at flashrom@flashrom.org\n", + new_bits, PRIxPTR_WIDTH, offset); + return -1; + } + old = chip_readb(flash, wrprotect); + /* Early exist if no change (of read/write/lockdown) was requested. */ + if (((old ^ new_bits) & REG2_MASK) == 0) { + msg_cdbg2("Locking status at 0x%0*" PRIxPTR " not changed\n", PRIxPTR_WIDTH, offset); + return 0; + } + /* Normally lockdowns can not be cleared. Try nevertheless if requested. */ + if ((old & REG2_LOCKDOWN) && !(new_bits & REG2_LOCKDOWN)) { + chip_writeb(flash, old & ~REG2_LOCKDOWN, wrprotect); + if (chip_readb(flash, wrprotect) != (old & ~REG2_LOCKDOWN)) { + msg_cerr("Lockdown can't be removed at 0x%0*" PRIxPTR "!\n", PRIxPTR_WIDTH, offset); + return -1; + } + } + /* Change read or write lock? */ + if ((old ^ new_bits) & REG2_RWLOCK) { + /* Do not lockdown yet. */ + msg_cdbg("Changing locking status at 0x%0*" PRIxPTR " to 0x%02x\n", PRIxPTR_WIDTH, offset, new_bits & REG2_RWLOCK); + chip_writeb(flash, new_bits & REG2_RWLOCK, wrprotect); + if (chip_readb(flash, wrprotect) != (new_bits & REG2_RWLOCK)) { + msg_cerr("Locking status change FAILED at 0x%0*" PRIxPTR "!\n", PRIxPTR_WIDTH, offset); + return -1; + } + } + /* Enable lockdown if requested. */ + if (!(old & REG2_LOCKDOWN) && (new_bits & REG2_LOCKDOWN)) { + msg_cdbg("Enabling lockdown at 0x%0*" PRIxPTR "\n", PRIxPTR_WIDTH, offset); + chip_writeb(flash, new_bits, wrprotect); + if (chip_readb(flash, wrprotect) != new_bits) { + msg_cerr("Enabling lockdown FAILED at 0x%0*" PRIxPTR "!\n", PRIxPTR_WIDTH, offset); + return -1; + } + } + + return 0; +} + +int unlock_regspace2_block(const struct flashctx *flash, chipaddr off) +{ + chipaddr wrprotect = flash->virtual_registers + off + 2; + uint8_t old = chip_readb(flash, wrprotect); + /* We don't care for the lockdown bit as long as the RW locks are 0 after we're done */ + return changelock_regspace2_block(flash, off, old & ~REG2_RWLOCK); +} + +static int unlock_regspace2_uniform(struct flashctx *flash, unsigned long block_size) +{ + const unsigned int elems = flash->chip->total_size * 1024 / block_size; + struct unlockblock blocks[2] = {{.size = block_size, .count = elems}}; + return regspace2_walk_unlockblocks(flash, blocks, &unlock_regspace2_block); +} + +int unlock_regspace2_uniform_64k(struct flashctx *flash) +{ + return unlock_regspace2_uniform(flash, 64 * 1024); +} + +int unlock_regspace2_uniform_32k(struct flashctx *flash) +{ + return unlock_regspace2_uniform(flash, 32 * 1024); +} + +int unlock_regspace2_block_eraser_0(struct flashctx *flash) +{ + // FIXME: this depends on the eraseblocks not to be filled up completely (i.e. to be null-terminated). + const struct unlockblock *unlockblocks = + (const struct unlockblock *)flash->chip->block_erasers[0].eraseblocks; + return regspace2_walk_unlockblocks(flash, unlockblocks, &unlock_regspace2_block); +} + +int unlock_regspace2_block_eraser_1(struct flashctx *flash) +{ + // FIXME: this depends on the eraseblocks not to be filled up completely (i.e. to be null-terminated). + const struct unlockblock *unlockblocks = + (const struct unlockblock *)flash->chip->block_erasers[1].eraseblocks; + return regspace2_walk_unlockblocks(flash, unlockblocks, &unlock_regspace2_block); +} + diff --git a/pm49fl00x.c b/pm49fl00x.c deleted file mode 100644 index fe28d2b..0000000 --- a/pm49fl00x.c +++ /dev/null @@ -1,53 +0,0 @@ -/* - * This file is part of the flashrom project. - * - * Copyright (C) 2004 Tyan Corporation - * Copyright (C) 2007 Nikolay Petukhov nikolay.petukhov@gmail.com - * Copyright (C) 2007 Reinder E.N. de Haan lb_reha@mveas.com - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "flash.h" - -static void write_lockbits_49fl00x(const struct flashctx *flash, - unsigned int size, unsigned char bits, - unsigned int block_size) -{ - unsigned int i, left = size; - chipaddr bios = flash->virtual_registers; - - for (i = 0; left >= block_size; i++, left -= block_size) { - /* pm49fl002 */ - if (block_size == 16384 && i % 2) - continue; - - chip_writeb(flash, bits, bios + (i * block_size) + 2); - } -} - -int unlock_49fl00x(struct flashctx *flash) -{ - write_lockbits_49fl00x(flash, flash->chip->total_size * 1024, 0, - flash->chip->page_size); - return 0; -} - -int lock_49fl00x(struct flashctx *flash) -{ - write_lockbits_49fl00x(flash, flash->chip->total_size * 1024, 1, - flash->chip->page_size); - return 0; -} diff --git a/sst49lfxxxc.c b/sst49lfxxxc.c index 3d17b5b..d6c85c8 100644 --- a/sst49lfxxxc.c +++ b/sst49lfxxxc.c @@ -23,45 +23,6 @@ #include "flash.h" #include "chipdrivers.h"
-static int write_lockbits_block_49lfxxxc(struct flashctx *flash, - unsigned long address, - unsigned char bits) -{ - unsigned long lock = flash->virtual_registers + address + 2; - msg_cdbg("lockbits at address=0x%08lx is 0x%01x\n", lock, - chip_readb(flash, lock)); - chip_writeb(flash, bits, lock); - - return 0; -} - -static int write_lockbits_49lfxxxc(struct flashctx *flash, unsigned char bits) -{ - chipaddr registers = flash->virtual_registers; - unsigned int i, left = flash->chip->total_size * 1024; - unsigned long address; - - msg_cdbg("\nbios=0x%08" PRIxPTR "\n", registers); - for (i = 0; left > 65536; i++, left -= 65536) { - write_lockbits_block_49lfxxxc(flash, i * 65536, bits); - } - address = i * 65536; - write_lockbits_block_49lfxxxc(flash, address, bits); - address += 32768; - write_lockbits_block_49lfxxxc(flash, address, bits); - address += 8192; - write_lockbits_block_49lfxxxc(flash, address, bits); - address += 8192; - write_lockbits_block_49lfxxxc(flash, address, bits); - - return 0; -} - -int unlock_49lfxxxc(struct flashctx *flash) -{ - return write_lockbits_49lfxxxc(flash, 0); -} - int erase_sector_49lfxxxc(struct flashctx *flash, unsigned int address, unsigned int sector_size) { diff --git a/stm50.c b/stm50.c index edcfdd2..1ae2bc4 100644 --- a/stm50.c +++ b/stm50.c @@ -27,63 +27,8 @@ */
#include "flash.h" -#include "flashchips.h" #include "chipdrivers.h"
-static int stm50_unlock_address(struct flashctx *flash, int offset) -{ - chipaddr wrprotect = flash->virtual_registers + 2; - static const uint8_t unlock_sector = 0x00; - msg_cdbg("unlocking at 0x%x\n", offset); - chip_writeb(flash, unlock_sector, wrprotect + offset); - if (chip_readb(flash, wrprotect + offset) != unlock_sector) { - msg_cerr("Cannot unlock address 0x%x\n", offset); - return -1; - } - return 0; -} - -/* Chips known to use a non-uniform block and sector layout for locking (as well as for erasing): - * Name Size Address range of lock registers - * M50FLW080A 1MB FFB00002 - FFBFF002 - * M50FLW080B 1MB FFB00002 - FFBFF002 - * M50FW002 256k FFBC0002 - FFBFC002 - * M50LPW116 2MB FFA00002 - FFBFC002 - */ -int unlock_stm50_nonuniform(struct flashctx *flash) -{ - int i; - struct eraseblock *eraseblocks = flash->chip->block_erasers[0].eraseblocks; - unsigned int done = 0; - for (i = 0; i < NUM_ERASEREGIONS && eraseblocks[i].count != 0; i++) { - unsigned int block_size = eraseblocks[i].size; - unsigned int block_count = eraseblocks[i].count; - - int j; - for (j = 0; j < block_count; j++) { - if (stm50_unlock_address(flash, done)) { - msg_cerr("UNLOCK FAILED!\n"); - return -1; - } - done += block_count * block_size; - } - } - return 0; -} - -/* Unlocking for uniform 64 kB blocks starting at offset 2 of the feature registers. */ -int unlock_stm50_uniform(struct flashctx *flash) -{ - int i; - for (i = 0; i < flash->chip->total_size * 1024; i+= 64 * 1024) { - if (stm50_unlock_address(flash, i)) { - msg_cerr("UNLOCK FAILED!\n"); - return -1; - } - } - return 0; -} - static int stm50_erase_sector(struct flashctx *flash, unsigned int addr) { chipaddr bios = flash->virtual_memory + addr; diff --git a/w39.c b/w39.c index 9dcb06a..4dd366c 100644 --- a/w39.c +++ b/w39.c @@ -20,65 +20,7 @@ */
#include "flash.h" - -static int printlock_w39_fwh_block(struct flashctx *flash, unsigned int offset) -{ - chipaddr wrprotect = flash->virtual_registers + offset + 2; - uint8_t locking; - - locking = chip_readb(flash, wrprotect); - msg_cdbg("Lock status of block at 0x%08x is ", offset); - switch (locking & 0x7) { - case 0: - msg_cdbg("Full Access.\n"); - break; - case 1: - msg_cdbg("Write Lock (Default State).\n"); - break; - case 2: - msg_cdbg("Locked Open (Full Access, Lock Down).\n"); - break; - case 3: - msg_cerr("Error: Write Lock, Locked Down.\n"); - break; - case 4: - msg_cdbg("Read Lock.\n"); - break; - case 5: - msg_cdbg("Read/Write Lock.\n"); - break; - case 6: - msg_cerr("Error: Read Lock, Locked Down.\n"); - break; - case 7: - msg_cerr("Error: Read/Write Lock, Locked Down.\n"); - break; - } - - /* Read or write lock present? */ - return (locking & ((1 << 2) | (1 << 0))) ? -1 : 0; -} - -static int unlock_w39_fwh_block(struct flashctx *flash, unsigned int offset) -{ - chipaddr wrprotect = flash->virtual_registers + offset + 2; - uint8_t locking; - - locking = chip_readb(flash, wrprotect); - /* Read or write lock present? */ - if (locking & ((1 << 2) | (1 << 0))) { - /* Lockdown active? */ - if (locking & (1 << 1)) { - msg_cerr("Can't unlock block at 0x%08x!\n", offset); - return -1; - } else { - msg_cdbg("Unlocking block at 0x%08x\n", offset); - chip_writeb(flash, 0, wrprotect); - } - } - - return 0; -} +#include "chipdrivers.h"
static uint8_t w39_idmode_readb(struct flashctx *flash, unsigned int offset) { @@ -145,30 +87,6 @@ static int printlock_w39_common(struct flashctx *flash, unsigned int offset) return printlock_w39_tblwp(lock); }
-static int printlock_w39_fwh(struct flashctx *flash) -{ - unsigned int i, total_size = flash->chip->total_size * 1024; - int ret = 0; - - /* Print lock status of the complete chip */ - for (i = 0; i < total_size; i += flash->chip->page_size) - ret |= printlock_w39_fwh_block(flash, i); - - return ret; -} - -static int unlock_w39_fwh(struct flashctx *flash) -{ - unsigned int i, total_size = flash->chip->total_size * 1024; - - /* Unlock the complete chip */ - for (i = 0; i < total_size; i += flash->chip->page_size) - if (unlock_w39_fwh_block(flash, i)) - return -1; - - return 0; -} - int printlock_w39f010(struct flashctx *flash) { uint8_t lock; @@ -267,7 +185,7 @@ int printlock_w39v040fa(struct flashctx *flash) int ret = 0;
ret = printlock_w39v040a(flash); - ret |= printlock_w39_fwh(flash); + ret |= printlock_regspace2_uniform_64k(flash);
return ret; } @@ -277,7 +195,7 @@ int printlock_w39v040fb(struct flashctx *flash) int ret = 0;
ret = printlock_w39v040b(flash); - ret |= printlock_w39_fwh(flash); + ret |= printlock_regspace2_uniform_64k(flash);
return ret; } @@ -288,7 +206,7 @@ int printlock_w39v040fc(struct flashctx *flash)
/* W39V040C and W39V040FC use different WP/TBL offsets. */ ret = printlock_w39_common(flash, 0x7fff2); - ret |= printlock_w39_fwh(flash); + ret |= printlock_regspace2_uniform_64k(flash);
return ret; } @@ -303,7 +221,7 @@ int printlock_w39v080fa(struct flashctx *flash) int ret = 0;
ret = printlock_w39v080a(flash); - ret |= printlock_w39_fwh(flash); + ret |= printlock_regspace2_uniform_64k(flash);
return ret; } @@ -316,26 +234,6 @@ int printlock_w39v080fa_dual(struct flashctx *flash) return -1; }
-int unlock_w39v040fb(struct flashctx *flash) -{ - if (unlock_w39_fwh(flash)) - return -1; - if (printlock_w39_common(flash, 0x7fff2)) - return -1; - - return 0; -} - -int unlock_w39v080fa(struct flashctx *flash) -{ - if (unlock_w39_fwh(flash)) - return -1; - if (printlock_w39_common(flash, 0xffff2)) - return -1; - - return 0; -} - int printlock_at49f(struct flashctx *flash) { uint8_t lock = w39_idmode_readb(flash, 0x00002);
-
Stefan Tauner