commit f820cad3a36dc27e184e6a73632a35aa51e34188
author Pete Batard <pete@akeo.ie> Thu Nov 15 22:29:59 2018 +0000
committer Pete Batard <pete@akeo.ie> Mon Nov 19 11:45:12 2018 +0000
tree 329b2cf6c2219fa35b3ee7f07d4c2e28e81cacbc
parent e0da6d795b4ddbe9f776a8c6a9c3e0708d16140f

rpi3: add RPI3_USE_UEFI_MAP build option

The default Raspberry Pi 3 memory mapping for ATF is geared towards
the use of uboot + Linux. This creates issues when trying to use
ATF with an UEFI payload and Windows on ARM64.

We therefore introduce new build option RPI3_USE_UEFI_MAP, that
enables the build process to use an alternate memory mapping that
is compatible with UEFI + Windows (as well as UEFI + Linux).

Fixes ARM-software/tf-issues#649

Signed-off-by: Pete Batard <pete@akeo.ie>

plat/rpi3/include/platform_def.h

diff --git a/plat/rpi3/include/platform_def.h b/plat/rpi3/include/platform_def.h
index 7122401..3b12c30 100644
--- a/plat/rpi3/include/platform_def.h
+++ b/plat/rpi3/include/platform_def.h
@@ -63,6 +63,25 @@
  * secure DRAM. Note that this is all actually DRAM with different names,
  * there is no Secure RAM in the Raspberry Pi 3.
  */
+#if RPI3_USE_UEFI_MAP
+#define SEC_ROM_BASE			ULL(0x00000000)
+#define SEC_ROM_SIZE			ULL(0x00010000)
+
+/* FIP placed after ROM to append it to BL1 with very little padding. */
+#define PLAT_RPI3_FIP_BASE		ULL(0x00020000)
+#define PLAT_RPI3_FIP_MAX_SIZE		ULL(0x00010000)
+
+/* Reserve 2M of secure SRAM and DRAM, starting at 2M */
+#define SEC_SRAM_BASE			ULL(0x00200000)
+#define SEC_SRAM_SIZE			ULL(0x00100000)
+
+#define SEC_DRAM0_BASE			ULL(0x00300000)
+#define SEC_DRAM0_SIZE			ULL(0x00100000)
+
+/* Windows on ARM requires some RAM at 4M */
+#define NS_DRAM0_BASE			ULL(0x00400000)
+#define NS_DRAM0_SIZE			ULL(0x00C00000)
+#else
 #define SEC_ROM_BASE			ULL(0x00000000)
 #define SEC_ROM_SIZE			ULL(0x00020000)
 
@@ -80,6 +99,7 @@
 
 #define NS_DRAM0_BASE			ULL(0x11000000)
 #define NS_DRAM0_SIZE			ULL(0x01000000)
+#endif /* RPI3_USE_UEFI_MAP */
 
 /*
  * BL33 entrypoint.

plat/rpi3/platform.mk

diff --git a/plat/rpi3/platform.mk b/plat/rpi3/platform.mk
index 07d2bf1..db96de8 100644
--- a/plat/rpi3/platform.mk
+++ b/plat/rpi3/platform.mk
@@ -111,7 +111,10 @@
 
 # UART to use at runtime. -1 means the runtime UART is disabled.
 # Any other value means the default UART will be used.
-RPI3_RUNTIME_UART               := -1
+RPI3_RUNTIME_UART		:= -1
+
+# Use normal memory mapping for ROM, FIP, SRAM and DRAM
+RPI3_USE_UEFI_MAP		:= 0
 
 # BL32 location
 RPI3_BL32_RAM_LOCATION	:= tdram
@@ -131,6 +134,7 @@
 $(eval $(call add_define,RPI3_DIRECT_LINUX_BOOT))
 $(eval $(call add_define,RPI3_PRELOADED_DTB_BASE))
 $(eval $(call add_define,RPI3_RUNTIME_UART))
+$(eval $(call add_define,RPI3_USE_UEFI_MAP))
 
 # Verify build config
 # -------------------