diff options
Diffstat (limited to 'serprog.c')
| -rw-r--r-- | serprog.c | 33 |
1 files changed, 17 insertions, 16 deletions
@@ -438,7 +438,23 @@ static int serprog_shutdown(void *data) return 0; } +static void *serprog_map(const char *descr, uintptr_t phys_addr, size_t len) +{ + /* Serprog transmits 24 bits only and assumes the underlying implementation handles any remaining bits + * correctly (usually setting them to one either in software (for FWH/LPC) or relying on the fact that + * the hardware observes a subset of the address bits only). Combined with the standard mapping of + * flashrom this creates a 16 MB-wide window just below the 4 GB boundary where serprog can operate (as + * needed for non-SPI chips). Below we make sure that the requested range is within this window. */ + if ((phys_addr & 0xFF000000) == 0xFF000000) { + return (void*)phys_addr; + } + msg_pwarn(MSGHEADER "requested mapping %s is incompatible: 0x%zx bytes at 0x%0*" PRIxPTR ".\n", + descr, len, PRIxPTR_WIDTH, phys_addr); + return NULL; +} + static struct spi_master spi_master_serprog = { + .map_flash_region = serprog_map, .features = SPI_MASTER_4BA, .max_data_read = MAX_DATA_READ_UNLIMITED, .max_data_write = MAX_DATA_WRITE_UNLIMITED, @@ -553,6 +569,7 @@ static void serprog_chip_readn(const struct flashctx *flash, uint8_t * buf, } static const struct par_master par_master_serprog = { + .map_flash_region = serprog_map, .chip_readb = serprog_chip_readb, .chip_readw = fallback_chip_readw, .chip_readl = fallback_chip_readl, @@ -945,27 +962,11 @@ static void serprog_delay(unsigned int usecs) sp_prev_was_write = 0; } -static void *serprog_map(const char *descr, uintptr_t phys_addr, size_t len) -{ - /* Serprog transmits 24 bits only and assumes the underlying implementation handles any remaining bits - * correctly (usually setting them to one either in software (for FWH/LPC) or relying on the fact that - * the hardware observes a subset of the address bits only). Combined with the standard mapping of - * flashrom this creates a 16 MB-wide window just below the 4 GB boundary where serprog can operate (as - * needed for non-SPI chips). Below we make sure that the requested range is within this window. */ - if ((phys_addr & 0xFF000000) == 0xFF000000) { - return (void*)phys_addr; - } - msg_pwarn(MSGHEADER "requested mapping %s is incompatible: 0x%zx bytes at 0x%0*" PRIxPTR ".\n", - descr, len, PRIxPTR_WIDTH, phys_addr); - return NULL; -} - const struct programmer_entry programmer_serprog = { .name = "serprog", .type = OTHER, /* FIXME */ .devs.note = "All programmer devices speaking the serprog protocol\n", .init = serprog_init, - .map_flash_region = serprog_map, .delay = serprog_delay, }; |