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Diffstat (limited to 'meta-arm/meta-arm-bsp/recipes-bsp/boot-wrapper-aarch64/files/fvp-baser-aemv8r64/0021-boot-Enable-firmware-node-initialization.patch')
| -rw-r--r-- | meta-arm/meta-arm-bsp/recipes-bsp/boot-wrapper-aarch64/files/fvp-baser-aemv8r64/0021-boot-Enable-firmware-node-initialization.patch | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/meta-arm/meta-arm-bsp/recipes-bsp/boot-wrapper-aarch64/files/fvp-baser-aemv8r64/0021-boot-Enable-firmware-node-initialization.patch b/meta-arm/meta-arm-bsp/recipes-bsp/boot-wrapper-aarch64/files/fvp-baser-aemv8r64/0021-boot-Enable-firmware-node-initialization.patch new file mode 100644 index 0000000000..943afdee3a --- /dev/null +++ b/meta-arm/meta-arm-bsp/recipes-bsp/boot-wrapper-aarch64/files/fvp-baser-aemv8r64/0021-boot-Enable-firmware-node-initialization.patch @@ -0,0 +1,98 @@ +From 6dfc937d1ae54d2ae9f8c60ca29ba73ca14dc8c4 Mon Sep 17 00:00:00 2001 +From: Jaxson Han <jaxson.han@arm.com> +Date: Wed, 29 Dec 2021 15:33:17 +0800 +Subject: [PATCH] boot: Enable firmware node initialization + +Enable the firmware node initialization, so that the next stage +(hypervisor) could share the EL2 with firmware (boot-wrapper). The next +stage (hypervisor) get the smccc entry point, code/data sections, the +sections attrs and firmware node version and so on. +It is worth noting that this EL2 sharing mechanism is only for Armv8R +AArch64, thus add flag_v8r to record if the arch is Armv8R AArch64. +Enable the firmware node initialization only if it is Armv8R AArch64. +Also, we increase the stack size to 1024 to fix the stack overflow issue +when using the libfdt. + +Add -fno-builtin options to CFLAGS to avoid the issue that the 'memset' +in common/lib.c conflicts with builtin 'memset' function. GCC version +>= 10 will have an incorrect compilation without -fno-builtin; + +Issue-Id: SCM-3816 +Upstream-Status: Inappropriate [other] + Implementation pending further discussion +Signed-off-by: Jaxson Han <jaxson.han@arm.com> +Change-Id: Ib274485a34d26215595fd0cd737be86610289817 +--- + Makefile.am | 4 ++-- + arch/aarch64/boot.S | 6 ++++++ + common/boot.c | 4 ++++ + 3 files changed, 12 insertions(+), 2 deletions(-) + +diff --git a/Makefile.am b/Makefile.am +index 054becd..b01809c 100644 +--- a/Makefile.am ++++ b/Makefile.am +@@ -23,7 +23,7 @@ DEFINES += -DCPU_IDS=$(CPU_IDS) + DEFINES += -DNR_CPUS=$(NR_CPUS) + DEFINES += $(if $(SYSREGS_BASE), -DSYSREGS_BASE=$(SYSREGS_BASE), ) + DEFINES += -DUART_BASE=$(UART_BASE) +-DEFINES += -DSTACK_SIZE=256 ++DEFINES += -DSTACK_SIZE=1024 + + if KERNEL_32 + DEFINES += -DKERNEL_32 +@@ -132,7 +132,7 @@ CHOSEN_NODE := chosen { \ + CPPFLAGS += $(INITRD_FLAGS) + CFLAGS += -I$(top_srcdir)/include/ -I$(top_srcdir)/$(ARCH_SRC)/include/ + CFLAGS += -Wall -fomit-frame-pointer +-CFLAGS += -fno-stack-protector ++CFLAGS += -fno-stack-protector -fno-builtin + CFLAGS += -ffunction-sections -fdata-sections + CFLAGS += -fno-pic -fno-pie + LDFLAGS += --gc-sections +diff --git a/arch/aarch64/boot.S b/arch/aarch64/boot.S +index 157c097..f310387 100644 +--- a/arch/aarch64/boot.S ++++ b/arch/aarch64/boot.S +@@ -240,6 +240,10 @@ el2_init: + #endif + ldr x1, =spsr_to_elx + str w0, [x1] ++ ++ mov w0, #1 ++ ldr x1, =flag_v8r ++ str w0, [x1] + // fall through + + el_max_init: +@@ -319,3 +323,5 @@ flag_keep_el: + .long 0 + ASM_DATA(spsr_to_elx) + .long 0 ++ASM_DATA(flag_v8r) ++ .long 0 +diff --git a/common/boot.c b/common/boot.c +index ee2bea0..38b2dca 100644 +--- a/common/boot.c ++++ b/common/boot.c +@@ -11,6 +11,9 @@ + + extern unsigned long entrypoint; + extern unsigned long dtb; ++extern unsigned int flag_v8r; ++ ++extern void dt_fw_node_init(int enable); + + void init_platform(void); + +@@ -64,6 +67,7 @@ void __noreturn first_spin(unsigned int cpu, unsigned long *mbox, + if (cpu == 0) { + init_platform(); + dt_add_memreserve(); ++ dt_fw_node_init(flag_v8r == 1); + + *mbox = (unsigned long)&entrypoint; + sevl(); +-- +2.25.1 + |