diff options
| author | Alex Deucher | 2015-11-24 10:34:45 -0500 |
|---|---|---|
| committer | Alex Deucher | 2015-12-02 12:45:58 -0500 |
| commit | 1eb22bd38ac58a1be6e7e0ae6dd4ab6d604a27d6 (patch) | |
| tree | 115f4e5de0fbe27d8f3bbc09e173a95d5a78d11b /drivers/gpu | |
| parent | 7946b878038d5113262d6eae09ff22fb2956351f (diff) | |
drm/amdgpu: add read_bios_from_rom callback for CI parts
Read the vbios image directly from the rom.
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/cik.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/cik.c b/drivers/gpu/drm/amd/amdgpu/cik.c index 484710cfdf82..61689f094ba8 100644 --- a/drivers/gpu/drm/amd/amdgpu/cik.c +++ b/drivers/gpu/drm/amd/amdgpu/cik.c @@ -929,6 +929,37 @@ static bool cik_read_disabled_bios(struct amdgpu_device *adev) return r; } +static bool cik_read_bios_from_rom(struct amdgpu_device *adev, + u8 *bios, u32 length_bytes) +{ + u32 *dw_ptr; + unsigned long flags; + 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; + /* take the smc lock since we are using the smc index */ + spin_lock_irqsave(&adev->smc_idx_lock, flags); + /* set rom index to 0 */ + WREG32(mmSMC_IND_INDEX_0, ixROM_INDEX); + WREG32(mmSMC_IND_DATA_0, 0); + /* set index to data for continous read */ + WREG32(mmSMC_IND_INDEX_0, ixROM_DATA); + for (i = 0; i < length_dw; i++) + dw_ptr[i] = RREG32(mmSMC_IND_DATA_0); + spin_unlock_irqrestore(&adev->smc_idx_lock, flags); + + return true; +} + static struct amdgpu_allowed_register_entry cik_allowed_read_registers[] = { {mmGRBM_STATUS, false}, {mmGB_ADDR_CONFIG, false}, @@ -2267,6 +2298,7 @@ int cik_set_ip_blocks(struct amdgpu_device *adev) static const struct amdgpu_asic_funcs cik_asic_funcs = { .read_disabled_bios = &cik_read_disabled_bios, + .read_bios_from_rom = &cik_read_bios_from_rom, .read_register = &cik_read_register, .reset = &cik_asic_reset, .set_vga_state = &cik_vga_set_state, |