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nixpkgs/pkgs/misc/arm-trusted-firmware/remove-hdcp-blob.patch
Adam Joseph bb0a925a76 remove unfree HDCP blob from arm-trusted-firmware, closes #148890
This patch comes from https://gitlab.com/vicencb/kevinboot/-/blob/master/atf.patch

I have been running firmware with this patch on my daily driver rk3399
laptop for the past four months.
2022-02-05 16:38:47 -08:00

48 lines
1.5 KiB
Diff

diff --git a/plat/rockchip/rk3399/drivers/dp/cdn_dp.c b/plat/rockchip/rk3399/drivers/dp/cdn_dp.c
index a8773f4f6..8e28c4830 100644
--- a/plat/rockchip/rk3399/drivers/dp/cdn_dp.c
+++ b/plat/rockchip/rk3399/drivers/dp/cdn_dp.c
@@ -13,17 +13,6 @@
#include <cdn_dp.h>
-__asm__(
- ".pushsection .text.hdcp_handler, \"ax\", %progbits\n"
- ".global hdcp_handler\n"
- ".balign 4\n"
- "hdcp_handler:\n"
- ".incbin \"" HDCPFW "\"\n"
- ".type hdcp_handler, %function\n"
- ".size hdcp_handler, .- hdcp_handler\n"
- ".popsection\n"
-);
-
static uint64_t *hdcp_key_pdata;
static struct cdn_dp_hdcp_key_1x key;
@@ -38,7 +27,7 @@ uint64_t dp_hdcp_ctrl(uint64_t type)
return 0;
case HDCP_KEY_DATA_START_DECRYPT:
if (hdcp_key_pdata == (uint64_t *)(&key + 1))
- return hdcp_handler(&key);
+ return PSCI_E_DISABLED;
else
return PSCI_E_INVALID_PARAMS;
assert(0); /* Unreachable */
diff --git a/plat/rockchip/rk3399/platform.mk b/plat/rockchip/rk3399/platform.mk
index a658fb286..5edb6a25b 100644
--- a/plat/rockchip/rk3399/platform.mk
+++ b/plat/rockchip/rk3399/platform.mk
@@ -88,11 +88,6 @@ $(eval $(call add_define_val,RK3399M0PMUFW,\"$(RK3399M0PMUFW)\"))
ifdef PLAT_RK_DP_HDCP
BL31_SOURCES += ${RK_PLAT_SOC}/drivers/dp/cdn_dp.c
-HDCPFW=${RK_PLAT_SOC}/drivers/dp/hdcp.bin
-$(eval $(call add_define_val,HDCPFW,\"$(HDCPFW)\"))
-
-${BUILD_PLAT}/bl31/cdn_dp.o: CCACHE_EXTRAFILES=$(HDCPFW)
-${RK_PLAT_SOC}/drivers/dp/cdn_dp.c: $(HDCPFW)
endif
# CCACHE_EXTRAFILES is needed because ccache doesn't handle .incbin