1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
From b24e766a5d73da9f5a4b51b31171a445298d6b1f Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Tue, 24 Nov 2015 10:34:45 -0500
Subject: [PATCH 0005/1110] drm/amdgpu: add read_bios_from_rom callback for CI
parts
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
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>
---
drivers/gpu/drm/amd/amdgpu/cik.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/cik.c b/drivers/gpu/drm/amd/amdgpu/cik.c
index 484710c..61689f0 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,
--
2.7.4
|
