diff options
| author | Tristan Corrick <tristan@corrick.kiwi> | 2018-12-03 16:17:47 +1300 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-01-03 20:02:15 +0000 |
| commit | 68dc36c9b30f2ca48a199861bf450af3a6a0fd52 (patch) | |
| tree | c54b965dd1a2c4ece6eafcb4ea5791c520158034 /src/drivers | |
| parent | 5ff742c740c3d39df85596a99046ef88aef5351f (diff) | |
drivers/aspeed: Fix AST2400 POST failure without BMC FW or VBIOS
This patch is from Linux, commit 3856081eede2. The commit message there
is:
> commit 3856081eede297b617560b85e948cfb00bb395ec
> Author: Y.C. Chen <yc_chen@aspeedtech.com>
> Date: Thu Feb 23 15:52:33 2017 +0800
>
> drm/ast: Fix AST2400 POST failure without BMC FW or VBIOS
>
> The current POST code for the AST2300/2400 family doesn't work properly
> if the chip hasn't been initialized previously by either the BMC own FW
> or the VBIOS. This fixes it.
>
> Signed-off-by: Y.C. Chen <yc_chen@aspeedtech.com>
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Tested-by: Y.C. Chen <yc_chen@aspeedtech.com>
> Acked-by: Joel Stanley <joel@jms.id.au>
> Cc: <stable@vger.kernel.org>
> Signed-off-by: Dave Airlie <airlied@redhat.com>
Tested on a Supermicro X10SLM+-F with an AST 2400 where the BMC flash
chip has been completely erased. Before the patch, the display resembled
a rainbow. After the patch, the display works well.
Original-Signed-off-by: Y.C. Chen <yc_chen@aspeedtech.com>
Original-Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Original-Tested-by: Y.C. Chen <yc_chen@aspeedtech.com>
Original-Signed-off-by: Dave Airlie <airlied@redhat.com>
Change-Id: I72efcf907fbd1263fe21d4f36fe900b305419c44
Signed-off-by: Tristan Corrick <tristan@corrick.kiwi>
Reviewed-on: https://review.coreboot.org/c/30507
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/aspeed/common/ast_post.c | 38 |
1 files changed, 35 insertions, 3 deletions
diff --git a/src/drivers/aspeed/common/ast_post.c b/src/drivers/aspeed/common/ast_post.c index 8f0d998836..0727443732 100644 --- a/src/drivers/aspeed/common/ast_post.c +++ b/src/drivers/aspeed/common/ast_post.c @@ -1693,12 +1693,44 @@ static void ast_init_dram_2300(struct drm_device *dev) temp |= 0x73; ast_write32(ast, 0x12008, temp); + param.dram_freq = 396; param.dram_type = AST_DDR3; + temp = ast_mindwm(ast, 0x1e6e2070); if (temp & 0x01000000) param.dram_type = AST_DDR2; - param.dram_chipid = ast->dram_type; - param.dram_freq = ast->mclk; - param.vram_size = ast->vram_size; + switch (temp & 0x18000000) { + case 0: + param.dram_chipid = AST_DRAM_512Mx16; + break; + default: + case 0x08000000: + param.dram_chipid = AST_DRAM_1Gx16; + break; + case 0x10000000: + param.dram_chipid = AST_DRAM_2Gx16; + break; + case 0x18000000: + param.dram_chipid = AST_DRAM_4Gx16; + break; + } + switch (temp & 0x0c) { + default: + case 0x00: + param.vram_size = AST_VIDMEM_SIZE_8M; + break; + + case 0x04: + param.vram_size = AST_VIDMEM_SIZE_16M; + break; + + case 0x08: + param.vram_size = AST_VIDMEM_SIZE_32M; + break; + + case 0x0c: + param.vram_size = AST_VIDMEM_SIZE_64M; + break; + } if (param.dram_type == AST_DDR3) { get_ddr3_info(ast, ¶m); |