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soc/amd/common/block/spi/fch_spi_ctrl: rework dump_state 

Introduce and use enum spi_dump_state_phase to indicate from which phase
of the SPI transfer dump_state gets called to print the relevant debug
information for that phase.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I2f54d4a7eb2f3b9756b77a01533f7c99e8597bfa
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60118
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
This commit is contained in:
Felix Held 2021-12-10 18:38:16 +01:00
parent 6b0f45199c
commit a3930dafd4
1 changed files with 25 additions and 6 deletions
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31
src/soc/amd/common/block/spi/fch_spi_ctrl.c
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@ -30,7 +30,12 @@
#define SPI_FIFO_RD_PTR_SHIFT 16
#define SPI_FIFO_RD_PTR_MASK 0x7f
static void dump_state(const char *str, u8 phase)
enum spi_dump_state_phase {
SPI_DUMP_STATE_BEFORE_CMD,
SPI_DUMP_STATE_AFTER_CMD,
};
static void dump_state(enum spi_dump_state_phase phase)
{
u8 dump_size;
u32 addr;
@ -38,19 +43,33 @@ static void dump_state(const char *str, u8 phase)
if (!CONFIG(SOC_AMD_COMMON_BLOCK_SPI_DEBUG))
return;
printk(BIOS_DEBUG, "SPI: %s\n", str);
switch (phase) {
case SPI_DUMP_STATE_BEFORE_CMD:
printk(BIOS_DEBUG, "SPI: Before execute\n");
break;
case SPI_DUMP_STATE_AFTER_CMD:
printk(BIOS_DEBUG, "SPI: Transaction finished\n");
break;
default: /* We shouldn't reach this */
return;
}
printk(BIOS_DEBUG, "Cntrl0: %x\n", spi_read32(SPI_CNTRL0));
printk(BIOS_DEBUG, "Status: %x\n", spi_read32(SPI_STATUS));
addr = spi_get_bar() + SPI_FIFO;
if (phase == 0) {
switch (phase) {
case SPI_DUMP_STATE_BEFORE_CMD:
dump_size = spi_read8(SPI_TX_BYTE_COUNT);
printk(BIOS_DEBUG, "TxByteCount: %x\n", dump_size);
printk(BIOS_DEBUG, "CmdCode: %x\n", spi_read8(SPI_CMD_CODE));
} else {
break;
case SPI_DUMP_STATE_AFTER_CMD:
dump_size = spi_read8(SPI_RX_BYTE_COUNT);
printk(BIOS_DEBUG, "RxByteCount: %x\n", dump_size);
addr += spi_read8(SPI_TX_BYTE_COUNT);
break;
}
if (dump_size > 0)
@ -74,7 +93,7 @@ static int wait_for_ready(void)
static int execute_command(void)
{
dump_state("Before execute", 0);
dump_state(SPI_DUMP_STATE_BEFORE_CMD);
spi_write8(SPI_CMD_TRIGGER, SPI_CMD_TRIGGER_EXECUTE);
@ -82,7 +101,7 @@ static int execute_command(void)
printk(BIOS_ERR,
"FCH_SC Error: Timeout executing command\n");
dump_state("Transaction finished", 1);
dump_state(SPI_DUMP_STATE_AFTER_CMD);
return 0;
}