diff options
Diffstat (limited to 'hw/ssi/aspeed_smc.c')
| -rw-r--r-- | hw/ssi/aspeed_smc.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/hw/ssi/aspeed_smc.c b/hw/ssi/aspeed_smc.c index 795784e5f3..e3d5e26058 100644 --- a/hw/ssi/aspeed_smc.c +++ b/hw/ssi/aspeed_smc.c @@ -71,6 +71,16 @@ #define INTR_CTRL_CMD_ABORT_EN (1 << 2) #define INTR_CTRL_WRITE_PROTECT_EN (1 << 1) +/* Command Control Register */ +#define R_CE_CMD_CTRL (0x0C / 4) +#define CTRL_ADDR_BYTE0_DISABLE_SHIFT 4 +#define CTRL_DATA_BYTE0_DISABLE_SHIFT 0 + +#define aspeed_smc_addr_byte_enabled(s, i) \ + (!((s)->regs[R_CE_CMD_CTRL] & (1 << (CTRL_ADDR_BYTE0_DISABLE_SHIFT + (i))))) +#define aspeed_smc_data_byte_enabled(s, i) \ + (!((s)->regs[R_CE_CMD_CTRL] & (1 << (CTRL_DATA_BYTE0_DISABLE_SHIFT + (i))))) + /* CEx Control Register */ #define R_CTRL0 (0x10 / 4) #define CTRL_IO_QPI (1 << 31) @@ -702,19 +712,17 @@ static void aspeed_smc_flash_setup(AspeedSMCFlash *fl, uint32_t addr) { const AspeedSMCState *s = fl->controller; uint8_t cmd = aspeed_smc_flash_cmd(fl); - int i; + int i = aspeed_smc_flash_is_4byte(fl) ? 4 : 3; /* Flash access can not exceed CS segment */ addr = aspeed_smc_check_segment_addr(fl, addr); ssi_transfer(s->spi, cmd); - - if (aspeed_smc_flash_is_4byte(fl)) { - ssi_transfer(s->spi, (addr >> 24) & 0xff); + while (i--) { + if (aspeed_smc_addr_byte_enabled(s, i)) { + ssi_transfer(s->spi, (addr >> (i * 8)) & 0xff); + } } - ssi_transfer(s->spi, (addr >> 16) & 0xff); - ssi_transfer(s->spi, (addr >> 8) & 0xff); - ssi_transfer(s->spi, (addr & 0xff)); /* * Use fake transfers to model dummy bytes. The value should @@ -988,6 +996,7 @@ static uint64_t aspeed_smc_read(void *opaque, hwaddr addr, unsigned int size) (addr >= s->r_timings && addr < s->r_timings + s->ctrl->nregs_timings) || addr == s->r_ce_ctrl || + addr == R_CE_CMD_CTRL || addr == R_INTR_CTRL || addr == R_DUMMY_DATA || (s->ctrl->has_dma && addr == R_DMA_CTRL) || @@ -1276,6 +1285,8 @@ static void aspeed_smc_write(void *opaque, hwaddr addr, uint64_t data, if (value != s->regs[R_SEG_ADDR0 + cs]) { aspeed_smc_flash_set_segment(s, cs, value); } + } else if (addr == R_CE_CMD_CTRL) { + s->regs[addr] = value & 0xff; } else if (addr == R_DUMMY_DATA) { s->regs[addr] = value & 0xff; } else if (addr == R_INTR_CTRL) { |