Commit 95addb2a authored by Alex Deucher's avatar Alex Deucher

drm/amdgpu: add read_bios_from_rom callback for VI parts

Read the vbios image directly from the rom.
Reviewed-by: default avatarJammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Reviewed-by: default avatarMonk Liu <monk.liu@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 1eb22bd3
......@@ -376,6 +376,38 @@ static bool vi_read_disabled_bios(struct amdgpu_device *adev)
WREG32_SMC(ixROM_CNTL, rom_cntl);
return r;
}
static bool vi_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 tonga_allowed_read_registers[] = {
{mmGB_MACROTILE_MODE7, true},
};
......@@ -1368,6 +1400,7 @@ static uint32_t vi_get_rev_id(struct amdgpu_device *adev)
static const struct amdgpu_asic_funcs vi_asic_funcs =
{
.read_disabled_bios = &vi_read_disabled_bios,
.read_bios_from_rom = &vi_read_bios_from_rom,
.read_register = &vi_read_register,
.reset = &vi_asic_reset,
.set_vga_state = &vi_vga_set_state,
......
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