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arch: arc: Add the intial support of memory domain

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Refering the ARM's implementation, the initial support of memory
domain in ARC is added:
* changes in MPU drivers
* changes in Kconfig
* codes to configure memory domain during thread swap
* changes in linker script template
* memory domain related macro definitions

the commited codes are simply tested through
samples/mpu/mem_domain_apis_test.

Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
This commit is contained in:
Wayne Ren 2017-12-20 16:48:45 +08:00 • committed by Andrew Boie
commit 9a40bf6b7e
9 changed files with 634 additions and 92 deletions
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107
include/arch/arc/v2/linker.ld
View file

@ -21,6 +21,8 @@
#include <linker/linker-defs.h>
#include <linker/linker-tool.h>
#define KOBJECT_TEXT_AREA 256
/* physical address of RAM */
#ifdef CONFIG_HARVARD
#define ROMABLE_REGION ICCM
@ -81,9 +83,12 @@ SECTIONS {
*(".text.*")
*(.gnu.linkonce.t.*)
_image_text_end = .;
#include <linker/kobject-text.ld>
} GROUP_LINK_IN(ROMABLE_REGION)
_image_text_end = .;
_image_rodata_start = .;
#include <linker/common-rom.ld>
SECTION_PROLOGUE(_RODATA_SECTION_NAME,,) {
@ -98,34 +103,49 @@ SECTIONS {
#include <custom-rodata.ld>
#endif
#include <linker/kobject-rom.ld>
} GROUP_LINK_IN(ROMABLE_REGION)
_image_rodata_end = .;
_image_rom_end = .;
__data_rom_start = ALIGN(4); /* XIP imaged DATA ROM start addr */
GROUP_END(ROMABLE_REGION)
GROUP_START(RAMABLE_REGION)
SECTION_DATA_PROLOGUE(_DATA_SECTION_NAME,,) {
/* when XIP, .text is in ROM, but vector table must be at start of .data */
#ifdef CONFIG_APPLICATION_MEMORY
SECTION_DATA_PROLOGUE(_APP_DATA_SECTION_NAME, (OPTIONAL),)
{
__app_ram_start = .;
__app_data_ram_start = .;
_image_ram_start = .;
__data_ram_start = .;
*(.data)
*(".data.*")
#ifdef CONFIG_CUSTOM_RWDATA_LD
/* Located in project source directory */
#include <custom-rwdata.ld>
#endif
APP_INPUT_SECTION(.data)
APP_INPUT_SECTION(".data.*")
__app_data_ram_end = .;
} GROUP_DATA_LINK_IN(RAMABLE_REGION, ROMABLE_REGION)
#include <linker/common-ram.ld>
__app_data_rom_start = LOADADDR(_APP_DATA_SECTION_NAME);
__data_ram_end = .;
SECTION_PROLOGUE(_APP_BSS_SECTION_NAME, (NOLOAD OPTIONAL),)
{
__app_bss_start = .;
APP_INPUT_SECTION(.bss)
APP_INPUT_SECTION(".bss.*")
APP_INPUT_SECTION(COMMON)
__app_bss_end = .;
} GROUP_DATA_LINK_IN(RAMABLE_REGION, RAMABLE_REGION)
__app_bss_num_words = (__app_bss_end - __app_bss_start) >> 2;
SECTION_PROLOGUE(_APP_NOINIT_SECTION_NAME, (NOLOAD OPTIONAL),)
{
APP_INPUT_SECTION(.noinit)
APP_INPUT_SECTION(".noinit.*")
} GROUP_DATA_LINK_IN(RAMABLE_REGION, RAMABLE_REGION)
__app_ram_end = .;
#endif /* CONFIG_APPLICATION_MEMORY */
SECTION_DATA_PROLOGUE(_BSS_SECTION_NAME,(NOLOAD),) {
/*
@ -134,9 +154,16 @@ SECTIONS {
*/
. = ALIGN(4);
__bss_start = .;
*(.bss)
*(".bss.*")
COMMON_SYMBOLS
#ifndef CONFIG_APPLICATION_MEMORY
_image_ram_start = .;
#endif
__kernel_ram_start = .;
KERNEL_INPUT_SECTION(.bss)
KERNEL_INPUT_SECTION(".bss.*")
KERNEL_INPUT_SECTION(COMMON)
*(".kernel_bss.*")
/*
* BSP clears this memory in words only and doesn't clear any
* potential left over bytes.
@ -149,27 +176,43 @@ SECTIONS {
* This section is used for non-initialized objects that
* will not be cleared during the boot process.
*/
*(.noinit)
*(".noinit.*")
KERNEL_INPUT_SECTION(.noinit)
KERNEL_INPUT_SECTION(".noinit.*")
*(".kernel_noinit.*")
} GROUP_LINK_IN(RAMABLE_REGION)
SECTION_DATA_PROLOGUE(_DATA_SECTION_NAME,,) {
/* when XIP, .text is in ROM, but vector table must be at start of .data */
__data_ram_start = .;
KERNEL_INPUT_SECTION(.data)
KERNEL_INPUT_SECTION(".data.*")
*(".kernel.*")
#ifdef CONFIG_CUSTOM_RWDATA_LD
/* Located in project source directory */
#include <custom-rwdata.ld>
#endif
} GROUP_DATA_LINK_IN(RAMABLE_REGION, ROMABLE_REGION)
__data_rom_start = LOADADDR(_DATA_SECTION_NAME);
#include <linker/common-ram.ld>
#include <linker/kobject.ld>
__data_ram_end = .;
/* Define linker symbols */
_image_ram_end = .;
_end = .; /* end of image */
__kernel_ram_end = .;
__kernel_ram_size = __kernel_ram_end - __kernel_ram_start;
GROUP_END(RAMABLE_REGION)
/* Data Closely Coupled Memory (DCCM) */
GROUP_START(DCCM)
GROUP_END(DCCM)
SECTION_PROLOGUE(initlevel_error, (OPTIONAL),)
{
DEVICE_INIT_UNDEFINED_SECTION()
}
ASSERT(SIZEOF(initlevel_error) == 0, "Undefined initialization levels used.")
#ifdef CONFIG_CUSTOM_SECTIONS_LD
/* Located in project source directory */
#include <custom-sections.ld>