diff options
| -rw-r--r-- | hw/misc/aspeed_sbc.c | 41 | ||||
| -rw-r--r-- | hw/misc/trace-events | 1 |
2 files changed, 42 insertions, 0 deletions
diff --git a/hw/misc/aspeed_sbc.c b/hw/misc/aspeed_sbc.c index 787e2d0489..2fc5db749d 100644 --- a/hw/misc/aspeed_sbc.c +++ b/hw/misc/aspeed_sbc.c @@ -49,10 +49,17 @@ #define OTP_MEMORY_SIZE 0x4000 /* OTP command */ #define SBC_OTP_CMD_READ 0x23b1e361 +#define SBC_OTP_CMD_WRITE 0x23b1e362 #define SBC_OTP_CMD_PROG 0x23b1e364 #define OTP_DATA_DWORD_COUNT (0x800) #define OTP_TOTAL_DWORD_COUNT (0x1000) + +/* Voltage mode */ +#define MODE_REGISTER (0x1000) +#define MODE_REGISTER_A (0x3000) +#define MODE_REGISTER_B (0x5000) + static uint64_t aspeed_sbc_read(void *opaque, hwaddr addr, unsigned int size) { AspeedSBCState *s = ASPEED_SBC(opaque); @@ -115,6 +122,37 @@ static bool aspeed_sbc_otp_read(AspeedSBCState *s, return true; } +static bool mode_handler(uint32_t otp_addr) +{ + switch (otp_addr) { + case MODE_REGISTER: + case MODE_REGISTER_A: + case MODE_REGISTER_B: + /* HW behavior, do nothing here */ + return true; + default: + qemu_log_mask(LOG_GUEST_ERROR, + "Unsupported address 0x%x\n", + otp_addr); + return false; + } +} + +static bool aspeed_sbc_otp_write(AspeedSBCState *s, + uint32_t otp_addr) +{ + if (otp_addr == 0) { + trace_aspeed_sbc_ignore_cmd(otp_addr); + return true; + } else { + if (mode_handler(otp_addr) == false) { + return false; + } + } + + return true; +} + static bool aspeed_sbc_otp_prog(AspeedSBCState *s, uint32_t otp_addr) { @@ -157,6 +195,9 @@ static void aspeed_sbc_handle_command(void *opaque, uint32_t cmd) case SBC_OTP_CMD_READ: ret = aspeed_sbc_otp_read(s, otp_addr); break; + case SBC_OTP_CMD_WRITE: + ret = aspeed_sbc_otp_write(s, otp_addr); + break; case SBC_OTP_CMD_PROG: ret = aspeed_sbc_otp_prog(s, otp_addr); break; diff --git a/hw/misc/trace-events b/hw/misc/trace-events index 9e05b82f37..eeb9243898 100644 --- a/hw/misc/trace-events +++ b/hw/misc/trace-events @@ -91,6 +91,7 @@ slavio_led_mem_writew(uint32_t val) "Write diagnostic LED 0x%04x" slavio_led_mem_readw(uint32_t ret) "Read diagnostic LED 0x%04x" # aspeed_sbc.c +aspeed_sbc_ignore_cmd(uint32_t cmd) "Ignoring command 0x%" PRIx32 aspeed_sbc_handle_cmd(uint32_t cmd, uint32_t addr, bool ret) "Handling command 0x%" PRIx32 " for OTP addr 0x%" PRIx32 " Result: %d" aspeed_sbc_otp_read(uint32_t addr, uint32_t value) "OTP Memory read: addr 0x%" PRIx32 " value 0x%" PRIx32 aspeed_sbc_otp_prog(uint32_t addr, uint32_t value) "OTP Memory write: addr 0x%" PRIx32 " value 0x%" PRIx32 |