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ARM: Add secure section for initialized data

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The secure monitor may need to store global or static values within the
secure section of memory, such as target PC or CPU power status.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Chen-Yu Tsai 2016-07-05 21:45:06 +08:00 committed by Hans de Goede
parent afc1f65f50
commit a5aa7ff33a
3 changed files with 10 additions and 4 deletions
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4
arch/arm/config.mk
View File

@ -120,8 +120,8 @@ endif
ifdef CONFIG_ARM64
OBJCOPYFLAGS += -j .text -j .rodata -j .data -j .u_boot_list -j .rela.dyn
else
OBJCOPYFLAGS += -j .text -j .secure_text -j .rodata -j .hash -j .data -j \
.got -j .got.plt -j .u_boot_list -j .rel.dyn
OBJCOPYFLAGS += -j .text -j .secure_text -j .secure_data -j .rodata -j .hash \
-j .data -j .got -j .got.plt -j .u_boot_list -j .rel.dyn
endif
ifdef CONFIG_OF_EMBED

9
arch/arm/cpu/u-boot.lds
View File

@ -69,12 +69,17 @@ SECTIONS
*(._secure.text)
}
.secure_stack ALIGN(ADDR(.secure_text) + SIZEOF(.secure_text),
.secure_data : AT(LOADADDR(.secure_text) + SIZEOF(.secure_text))
{
*(._secure.data)
}
.secure_stack ALIGN(ADDR(.secure_data) + SIZEOF(.secure_data),
CONSTANT(COMMONPAGESIZE)) (NOLOAD) :
#ifdef __ARMV7_PSCI_STACK_IN_RAM
AT(ADDR(.secure_stack))
#else
AT(LOADADDR(.secure_text) + SIZEOF(.secure_text))
AT(LOADADDR(.secure_data) + SIZEOF(.secure_data))
#endif
{
KEEP(*(.__secure_stack_start))

1
arch/arm/include/asm/secure.h
View File

@ -4,6 +4,7 @@
#include <config.h>
#define __secure __attribute__ ((section ("._secure.text")))
#define __secure_data __attribute__ ((section ("._secure.data")))
#ifdef CONFIG_ARMV7_SECURE_BASE
/*