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| author | Matt DeVillier <matt.devillier@gmail.com> | 2020-01-19 00:17:29 -0600 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-01-20 10:50:06 +0000 |
| commit | 9cc16031730d8bb47971e18e564ba6343bd4b5cb (patch) | |
| tree | 1524386480f7e580887490e4987278e767964375 | |
| parent | 05bc9b38a31bc6f3836a32a6ea9880f6a570f0f6 (diff) | |
soc/amd/stoneyridge: Add SMMSTORE support
Add SMMSTORE support for saving EFI NVRAM variables in
conjunction with Tianocore payload.
Test: build/boot several google/kahlee variants, test
manipulation and persistence of Tianocore bootorder variables.
Change-Id: Ida604a44d1fa5288e96dbe05de1f847e597cc95d
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38468
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
| -rw-r--r-- | src/soc/amd/stoneyridge/smihandler.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/soc/amd/stoneyridge/smihandler.c b/src/soc/amd/stoneyridge/smihandler.c index 2b883972c9..aa2a15bf14 100644 --- a/src/soc/amd/stoneyridge/smihandler.c +++ b/src/soc/amd/stoneyridge/smihandler.c @@ -23,6 +23,7 @@ #include <arch/acpi.h> #include <arch/hlt.h> #include <device/pci_def.h> +#include <smmstore.h> #include <soc/smi.h> #include <soc/southbridge.h> #include <amdblocks/acpimmio.h> @@ -88,6 +89,25 @@ static void southbridge_smi_gsmi(void) io_smi->rax = gsmi_exec(sub_command, ®_ebx); } +static void southbridge_smi_store(void) +{ + u8 sub_command; + amd64_smm_state_save_area_t *io_smi; + u32 reg_ebx; + + io_smi = find_save_state(APM_CNT_SMMSTORE); + if (!io_smi) + return; + /* Command and return value in EAX */ + sub_command = (io_smi->rax >> 8) & 0xff; + + /* Parameter buffer in EBX */ + reg_ebx = io_smi->rbx; + + /* drivers/smmstore/smi.c */ + io_smi->rax = smmstore_exec(sub_command, (void *)reg_ebx); +} + static void sb_apmc_smi_handler(void) { const uint8_t cmd = inb(pm_acpi_smi_cmd_port()); @@ -103,6 +123,10 @@ static void sb_apmc_smi_handler(void) if (CONFIG(ELOG_GSMI)) southbridge_smi_gsmi(); break; + case APM_CNT_SMMSTORE: + if (CONFIG(SMMSTORE)) + southbridge_smi_store(); + break; } mainboard_smi_apmc(cmd); |