diff options
| author | Felix Held <felix-coreboot@felixheld.de> | 2023-07-12 22:58:05 +0200 |
|---|---|---|
| committer | Martin L Roth <gaumless@gmail.com> | 2023-07-17 03:24:37 +0000 |
| commit | 9c0bce5f28a703aa9f7d777acc3ed35651ce2115 (patch) | |
| tree | dd22bdcf879dc0f3160d4e158c0887df0b632780 /src/soc/amd | |
| parent | 7627208ad735dbcd5631c301c15f2ee451fdd9d6 (diff) | |
soc/amd/phoenix/early_fch: don't call enable_acpimmio_decode_pm04
The enable_acpimmio_decode_pm04 function uses the IO port based indirect
access of the PM register space. The PM_INDEX and PM_DATA registers
don't exist any more on Phoenix, so the code shouldn't access those.
Since the PM_04_ACPIMMIO_DECODE_EN bit in the
ACPIMMIO_DECODE_REGISTER_04 register is 1 after reset, the ACPIMMIO
space is still accessible.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ia41f239b023edc094f5cbae63ed7c079649c74da
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76437
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/amd')
| -rw-r--r-- | src/soc/amd/phoenix/early_fch.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/soc/amd/phoenix/early_fch.c b/src/soc/amd/phoenix/early_fch.c index d74ef3e30f..bcfddb2241 100644 --- a/src/soc/amd/phoenix/early_fch.c +++ b/src/soc/amd/phoenix/early_fch.c @@ -19,9 +19,12 @@ /* Before console init */ void fch_pre_init(void) { - /* Enable_acpimmio_decode_pm04 to enable the ACPIMMIO decode which is needed to access - the GPIO registers. */ - enable_acpimmio_decode_pm04(); + /* + * PM_04_ACPIMMIO_DECODE_EN which enables the ACPIMMIO decode is already set after + * reset. Since the IO port based indirect PM register space access isn't implemented + * in Phoenix any more, don't call enable_acpimmio_decode_pm04() which uses the + * indirect PM register space access via the IO ports that aren't implemented any more. + */ /* Setup SPI base by calling lpc_early_init before setting up eSPI. */ lpc_early_init(); |