[PATCH v4] drm/ast: Fixed CVE for DP501

that using "pci_iomap_range()" maps to DP501's FW that stored on the end of FB (Frame Buffer). In this case, FrameBuffer reserves the last 2MB used for the image of DP501. Signed-off-by: KuoHsiang Chou Reported-by: kernel test robot --- drivers/gpu/

[PATCH V3] drm/ast: Disable fast reset after DRAM initial

condition and restore WDT default setting again, before Fast-reset clearing. Signed-off-by: KuoHsiang Chou --- drivers/gpu/drm/ast/ast_drv.h | 1 + drivers/gpu/drm/ast/ast_main.c | 5 +++ drivers/gpu/drm/ast/ast_post.c | 68 +- 3 files changed, 48 insertions

[PATCH] drm/ast: Update the sequence of Clearing Fast-reset

[Bug][AST2500] If SCU00 is not unlocked, just enter its password again. It is unnecessary to clear AHB lock condition and restore WDT default setting again, before Fast-reset clearing. Signed-off-by: KuoHsiang Chou --- drivers/gpu/drm/ast/ast_post.c | 5 + 1 file changed, 1 insertion(+), 4

[PATCH v2] drm/ast: Disable fast reset after DRAM initial

. Once Fast reset is checked as enabling, WDT (Watch Dog Timer) should be first enabled to avoid system deadlock before disable fast reset mode. V2: Use to_pci_dev() to get revision of PCI configuration. Signed-off-by: KuoHsiang Chou --- drivers/gpu/drm/ast/ast_drv.h | 1 + drivers/gpu/drm/ast

[PATCH] drm/ast: Disable fast reset after DRAM initial

Fast reset is checked as enabling, WDT (Watch Dog Timer) should be first enabled to avoid system deadlock before disable fast reset mode. Signed-off-by: KuoHsiang Chou --- drivers/gpu/drm/ast/ast_drv.h | 1 + drivers/gpu/drm/ast/ast_main.c | 4 ++ drivers/gpu/drm/ast/ast_post.c | 72

[PATCH V3] drm/ast: Fixed CVE for DP501

that using "pci_iomap_range()" maps to DP501's FW that stored on the end of FB (Frame Buffer). 0In this case, FrameBuffer reserves the last 2MB used for the image of DP501. Signed-off-by: KuoHsiang Chou Reported-by: kernel test robot --- drivers/gpu/

[PATCH V3] drm/ast: Fixed CVE for DP501

that using "pci_iomap_range()" maps to DP501's FW that stored on the end of FB (Frame Buffer). 0In this case, FrameBuffer reserves the last 2MB used for the image of DP501. Signed-off-by: KuoHsiang Chou Reported-by: kernel test robot --- drivers/gpu/

[PATCH v2] drm/ast: Fixed CVE for DP501

that using "pci_iomap_range()" maps to DP501's FW that stored on the end of FB (Frame Buffer). In this case, FrameBuffer reserves the last 2MB used for the image of DP501. Signed-off-by: KuoHsiang Chou --- drivers/gpu/drm/ast/ast_dp501.c | 136 +++- drivers/gpu/

[PATCH] drm/ast: Fixed CVE for DP501

[Bug][DP501] 1. For security concerning, P2A have to be disabled by CVE regulation. 2. FrameBuffer reverses last 2MB used for the image of DP501. 3. If P2A is disallowed, the default "ioremap()" behavior is non-cached and could be an alternative accessing on the image of DP501. --- drivers/gpu/

[PATCH] drm/ast: Create chip AST2600

[New] Support AST2600 Signed-off-by: KuoHsiang Chou --- drivers/gpu/drm/ast/ast_drv.h | 1 + drivers/gpu/drm/ast/ast_main.c | 5 - 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/ast/ast_drv.h b/drivers/gpu/drm/ast/ast_drv.h index 467049ca8430..6b9e3b94a712