diff options
| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2020-06-29 05:46:17 +0300 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-07-08 07:33:00 +0000 |
| commit | fca0cba6a15176002bbeadd4e41a7634928481de (patch) | |
| tree | ba24a06860f97e394c2581b259f241ca3321872d /src | |
| parent | e769bcee9a73ac712748fb55c38d072b39bbcd88 (diff) | |
sb/intel/i82801gx,ix,jx: Drop invalid GNVS update routine
The smm_setup_structures() calls placed GNVS address into
register %ebx. Old code on i82801dx used these low memory
addresses.
Change-Id: I407b9b9fd44db027a62356e2470f6c39ed3bff49
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42426
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/southbridge/intel/i82801gx/smihandler.c | 8 | ||||
| -rw-r--r-- | src/southbridge/intel/i82801ix/smihandler.c | 13 | ||||
| -rw-r--r-- | src/southbridge/intel/i82801jx/smihandler.c | 13 |
3 files changed, 9 insertions, 25 deletions
diff --git a/src/southbridge/intel/i82801gx/smihandler.c b/src/southbridge/intel/i82801gx/smihandler.c index 7aee63b457..562dae3a97 100644 --- a/src/southbridge/intel/i82801gx/smihandler.c +++ b/src/southbridge/intel/i82801gx/smihandler.c @@ -21,11 +21,9 @@ u16 pmbase = DEFAULT_PMBASE; u8 smm_initialized = 0; -void southbridge_update_gnvs(u8 apm_cnt, int *smm_done) -{ - gnvs = *(struct global_nvs **)0x500; - *smm_done = 1; -} +/* This implementation was removed since it was invalid. There will be one shared + approach to set GNVS pointer into SMM without the 0xEA PM Trap mentioned above. */ +void southbridge_update_gnvs(u8 apm_cnt, int *smm_done) { } int southbridge_io_trap_handler(int smif) { diff --git a/src/southbridge/intel/i82801ix/smihandler.c b/src/southbridge/intel/i82801ix/smihandler.c index c352e5d76c..699f51f712 100644 --- a/src/southbridge/intel/i82801ix/smihandler.c +++ b/src/southbridge/intel/i82801ix/smihandler.c @@ -14,8 +14,9 @@ struct global_nvs *gnvs; #endif -void *tcg = (void *)0x0; -void *smi1 = (void *)0x0; +/* This implementation was removed since it was invalid. There will be one shared + approach to set GNVS pointer into SMM without the 0xEA PM Trap mentioned above. */ +void southbridge_update_gnvs(u8 apm_cnt, int *smm_done) { } int southbridge_io_trap_handler(int smif) { @@ -34,14 +35,6 @@ int southbridge_io_trap_handler(int smif) return 0; } -void southbridge_update_gnvs(u8 apm_cnt, int *smm_done) -{ - gnvs = *(struct global_nvs **)0x500; - tcg = *(void **)0x504; - smi1 = *(void **)0x508; - *smm_done = 1; -} - void southbridge_smi_monitor(void) { #define IOTRAP(x) (trap_sts & (1 << x)) diff --git a/src/southbridge/intel/i82801jx/smihandler.c b/src/southbridge/intel/i82801jx/smihandler.c index b6161e9d81..16ec025c15 100644 --- a/src/southbridge/intel/i82801jx/smihandler.c +++ b/src/southbridge/intel/i82801jx/smihandler.c @@ -15,8 +15,9 @@ u16 pmbase = DEFAULT_PMBASE; u8 smm_initialized = 0; -void *tcg = (void *)0x0; -void *smi1 = (void *)0x0; +/* This implementation was removed since it was invalid. There will be one shared + approach to set GNVS pointer into SMM without the 0xEA PM Trap mentioned above. */ +void southbridge_update_gnvs(u8 apm_cnt, int *smm_done) { } int southbridge_io_trap_handler(int smif) { @@ -35,14 +36,6 @@ int southbridge_io_trap_handler(int smif) return 0; } -void southbridge_update_gnvs(u8 apm_cnt, int *smm_done) -{ - gnvs = *(struct global_nvs **)0x500; - tcg = *(void **)0x504; - smi1 = *(void **)0x508; - *smm_done = 1; -} - void southbridge_smi_monitor(void) { #define IOTRAP(x) (trap_sts & (1 << x)) |