Reviewed-by: Xiaojie Yuan <xiaojie.yuan@xxxxxxx>
BR,
Xiaojie
> On Nov 16, 2019, at 12:12 AM, Alex Deucher <alexdeucher@xxxxxxxxx> wrote:
>
> Ping?
>
>> On Wed, Nov 13, 2019 at 2:29 PM Alex Deucher <alexdeucher@xxxxxxxxx> wrote:
>>
>> Needed as a fallback if the vbios can't be fetched by other means.
>>
>> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
>> ---
>> drivers/gpu/drm/amd/amdgpu/nv.c | 24 ++++++++++++++++++++++--
>> 1 file changed, 22 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/nv.c b/drivers/gpu/drm/amd/amdgpu/nv.c
>> index 7283d6198b89..ad04d1d6e9c7 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/nv.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/nv.c
>> @@ -40,6 +40,7 @@
>> #include "gc/gc_10_1_0_sh_mask.h"
>> #include "hdp/hdp_5_0_0_offset.h"
>> #include "hdp/hdp_5_0_0_sh_mask.h"
>> +#include "smuio/smuio_11_0_0_offset.h"
>>
>> #include "soc15.h"
>> #include "soc15_common.h"
>> @@ -156,8 +157,27 @@ static bool nv_read_disabled_bios(struct amdgpu_device *adev)
>> static bool nv_read_bios_from_rom(struct amdgpu_device *adev,
>> u8 *bios, u32 length_bytes)
>> {
>> - /* TODO: will implement it when SMU header is available */
>> - return false;
>> + u32 *dw_ptr;
>> + u32 i, length_dw;
>> +
>> + if (bios == NULL)
>> + return false;
>> + if (length_bytes == 0)
>> + return false;
>> + /* APU vbios image is part of sbios image */
>> + if (adev->flags & AMD_IS_APU)
>> + return false;
>> +
>> + dw_ptr = (u32 *)bios;
>> + length_dw = ALIGN(length_bytes, 4) / 4;
>> +
>> + /* set rom index to 0 */
>> + WREG32(SOC15_REG_OFFSET(SMUIO, 0, mmROM_INDEX), 0);
>> + /* read out the rom data */
>> + for (i = 0; i < length_dw; i++)
>> + dw_ptr[i] = RREG32(SOC15_REG_OFFSET(SMUIO, 0, mmROM_DATA));
>> +
>> + return true;
>> }
>>
>> static struct soc15_allowed_register_entry nv_allowed_read_registers[] = {
>> --
>> 2.23.0
>>
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