diff options
| author | Eric Lai <ericr_lai@compal.corp-partner.google.com> | 2020-01-23 14:43:08 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-01-27 07:43:06 +0000 |
| commit | f74b6e351c921f2505691f5ece834b280e500395 (patch) | |
| tree | 22137a1ecd25e2cd790ddbff68f089f12160e44a /src/ec/google | |
| parent | ec430ee343bdceaf21a7be462e8f856102bd2c09 (diff) | |
ec/google/wilco: add ec command set cpu id
Add new mailbox command support. Set CPU ID and cores to EC.
EC will according to different CPU to set different power table.
BUG=b:148126144
Signed-off-by: Eric Lai <ericr_lai@compal.corp-partner.google.com>
Change-Id: I135d2421d2106934be996a1780786f6bb0bf6b34
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38526
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Mathew King <mathewk@chromium.org>
Diffstat (limited to 'src/ec/google')
| -rw-r--r-- | src/ec/google/wilco/commands.c | 26 | ||||
| -rw-r--r-- | src/ec/google/wilco/commands.h | 16 |
2 files changed, 42 insertions, 0 deletions
diff --git a/src/ec/google/wilco/commands.c b/src/ec/google/wilco/commands.c index 626f9ddc2c..791141e814 100644 --- a/src/ec/google/wilco/commands.c +++ b/src/ec/google/wilco/commands.c @@ -224,3 +224,29 @@ void die_notify(void) wilco_ec_mailbox(WILCO_EC_MSG_DEFAULT, KB_ERR_CODE, &err_code, 1, NULL, 0); } + +/* + * EC CPU ID data struct + * MBOX[2] = 0xFF + * MBOX[3] = CPUID_Low + * MBOX[4] = CPUID_Mid + * MBOX[5] = CPUID_High + * MBOX[6] = CPU_Core + * MBOX[7] = GPU_Core + * MBOX[8] = Reserved + */ +int wilco_ec_set_cpuid(uint32_t cpuid, uint8_t cpu_cores, uint8_t gpu_cores) +{ + uint8_t cpu_id[7] = {0}, i; + + cpu_id[0] = 0xff; + for (i = 1; i < 4; i++) { + cpu_id[i] = cpuid & 0xff; + cpuid = cpuid >> 8; + } + cpu_id[4] = cpu_cores; + cpu_id[5] = gpu_cores; + + return wilco_ec_mailbox(WILCO_EC_MSG_DEFAULT, KB_CPU_ID, cpu_id, + ARRAY_SIZE(cpu_id), NULL, 0); +} diff --git a/src/ec/google/wilco/commands.h b/src/ec/google/wilco/commands.h index 9a185805af..3d2ae46fae 100644 --- a/src/ec/google/wilco/commands.h +++ b/src/ec/google/wilco/commands.h @@ -52,6 +52,8 @@ enum { KB_BIOS_PROGRESS = 0xc2, /* Inform the EC that a fatal error occurred */ KB_ERR_CODE = 0x7b, + /* Set CPU ID */ + KB_CPU_ID = 0xbf, }; enum ec_ram_addr { @@ -337,4 +339,18 @@ int wilco_ec_signed_fw(void); */ void wilco_ec_save_post_code(uint8_t post_code); +/** + * wilco_ec_set_cpuid + * + * Set CPU ID to EC. + * + * @cpuid: read CPU ID from cpu_eax(1) + * @cpu_cores: cores of CPU + * @gpu_cores: cores of GPU + * + * Returns 0 if EC command was successful + * Returns -1 if EC command failed + */ +int wilco_ec_set_cpuid(uint32_t cpuid, uint8_t cpu_cores, uint8_t gpu_cores); + #endif /* EC_GOOGLE_WILCO_COMMANDS_H */ |