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Code Issues Releases Wiki Activity

dediprog: Disable 4BA completely

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This is an interim solution. We'll have to enable 4BA step-by-step for
each dediprog protocol version.

Change-Id: I08efcbb09ab3499ef6902a698e9ce3d6232237c4
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/30386
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
This commit is contained in:
Nico Huber 2018-12-22 16:54:59 +01:00
parent 3d7b1e3b5c
commit dc5af547df
3 changed files with 18 additions and 0 deletions
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1
dediprog.c
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@ -933,6 +933,7 @@ static int parse_voltage(char *voltage)
static const struct spi_master spi_master_dediprog = {
.type = SPI_CONTROLLER_DEDIPROG,
.features = SPI_MASTER_NO_4BA_MODES,
.max_data_read = 16, /* 18 seems to work fine as well, but 19 times out sometimes with FW 5.15. */
.max_data_write = 16,
.command = dediprog_spi_send_command,

10
flashrom.c
View File

@ -2333,6 +2333,16 @@ int prepare_flash_access(struct flashctx *const flash,
flash->address_high_byte = -1;
flash->in_4ba_mode = false;
/* Be careful about 4BA chips and broken masters */
if (flash->chip->total_size > 16 * 1024 && spi_master_no_4ba_modes(flash)) {
/* If we can't use native instructions, bail out */
if ((flash->chip->feature_bits & FEATURE_4BA_NATIVE) != FEATURE_4BA_NATIVE
|| !spi_master_4ba(flash)) {
msg_cerr("Programmer doesn't support this chip. Aborting.\n");
return 1;
}
}
/* Enable/disable 4-byte addressing mode if flash chip supports it */
if (flash->chip->feature_bits & (FEATURE_4BA_ENTER | FEATURE_4BA_ENTER_WREN | FEATURE_4BA_ENTER_EAR7)) {
int ret;

7
programmer.h
View File

@ -659,6 +659,8 @@ enum spi_controller {
#define MAX_DATA_WRITE_UNLIMITED 256
#define SPI_MASTER_4BA (1U << 0) /**< Can handle 4-byte addresses */
#define SPI_MASTER_NO_4BA_MODES (1U << 1) /**< Compatibility modes (i.e. extended address
register, 4BA mode switch) don't work */
struct spi_master {
enum spi_controller type;
@ -851,6 +853,11 @@ static inline bool spi_master_4ba(const struct flashctx *const flash)
return flash->mst->buses_supported & BUS_SPI &&
flash->mst->spi.features & SPI_MASTER_4BA;
}
static inline bool spi_master_no_4ba_modes(const struct flashctx *const flash)
{
return flash->mst->buses_supported & BUS_SPI &&
flash->mst->spi.features & SPI_MASTER_NO_4BA_MODES;
}
/* usbdev.c */
struct libusb_device_handle;