diff options
| -rw-r--r-- | sb600spi.c | 18 |
1 files changed, 16 insertions, 2 deletions
@@ -53,6 +53,10 @@ enum amd_chipset { #define FIFO_SIZE_OLD 8 #define FIFO_SIZE_YANGTZE 71 +#define SPI100_CMD_CODE_REG 0x45 +#define SPI100_CMD_TRIGGER_REG 0x47 +#define SPI100_EXECUTE_CMD (1 << 7) + struct sb600spi_data { struct flashctx *flash; uint8_t *spibar; @@ -200,6 +204,16 @@ static void execute_command(uint8_t *sb600_spibar) msg_pspew("done\n"); } +static void execute_spi100_command(uint8_t *sb600_spibar) +{ + msg_pspew("Executing... "); + mmio_writeb(mmio_readb(sb600_spibar + SPI100_CMD_TRIGGER_REG) | SPI100_EXECUTE_CMD, + sb600_spibar + SPI100_CMD_TRIGGER_REG); + while (mmio_readb(sb600_spibar + SPI100_CMD_TRIGGER_REG) & SPI100_CMD_TRIGGER_REG) + ; + msg_pspew("done\n"); +} + static int sb600_spi_send_command(const struct flashctx *flash, unsigned int writecnt, unsigned int readcnt, const unsigned char *writearr, @@ -299,7 +313,7 @@ static int spi100_spi_send_command(const struct flashctx *flash, unsigned int wr unsigned char cmd = *writearr++; writecnt--; msg_pspew("%s, cmd=0x%02x, writecnt=%d, readcnt=%d\n", __func__, cmd, writecnt, readcnt); - mmio_writeb(cmd, sb600_spibar + 0); + mmio_writeb(cmd, sb600_spibar + SPI100_CMD_CODE_REG); int ret = check_readwritecnt(flash, writecnt, readcnt); if (ret != 0) @@ -317,7 +331,7 @@ static int spi100_spi_send_command(const struct flashctx *flash, unsigned int wr } msg_pspew("\n"); - execute_command(sb600_spibar); + execute_spi100_command(sb600_spibar); msg_pspew("Reading buffer: "); for (count = 0; count < readcnt; count++) { |