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x86_64: minimally preparing for enabling newlib

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The libc hooks for Newlib requires CONFIG_SRAM_SIZE and
the symbol "_end" at the end of memory. This is in preparation
for enabling Newlib for x86_64.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This commit is contained in:
Daniel Leung 2019-05-07 10:04:26 -07:00 committed by Anas Nashif
parent 4ae1f2941d
commit 06a3735754
3 changed files with 5 additions and 2 deletions
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4
arch/Kconfig
View File

@ -92,7 +92,7 @@ config 64BIT
soc/**/Kconfig, or boards/**/Kconfig and the user should generally
avoid modifying it.
if ARC || ARM || NIOS2 || X86
if ARC || ARM || NIOS2 || X86 || X86_64
config SRAM_SIZE
int "SRAM Size in kB"
@ -126,7 +126,7 @@ config FLASH_BASE_ADDRESS
normally set by the board's defconfig file and the user should generally
avoid modifying it via the menu configuration.
endif # ARM || ARC || NIOS2 || X86
endif # ARM || ARC || NIOS2 || X86 || X86_64
if ARCH_HAS_TRUSTED_EXECUTION

2
boards/x86_64/qemu_x86_64/qemu_x86_64_defconfig
View File

@ -12,3 +12,5 @@ CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=1000000000
CONFIG_MAIN_STACK_SIZE=1024
CONFIG_IDLE_STACK_SIZE=1024
CONFIG_TEST_EXTRA_STACKSIZE=2048
CONFIG_SRAM_BASE_ADDRESS=0x100000
CONFIG_SRAM_SIZE=8192

1
soc/x86_64/x86_64/linker.ld
View File

@ -69,6 +69,7 @@ SECTIONS {
*(.noinit*)
} :ram
_end = .;
/* We enable orphan section warnings, so these standard sections all
* have to be called out explicitly