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ARM: uniphier: make mem_map run-time configurable

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Currently, mem_map is hard-coded, and it worked well until the last
SoC. For a planned new SoC, the addresses of peripherals and DRAM
will be changed. Set it up run-time.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2019-07-10 20:07:45 +09:00
parent df72534121
commit 34e29f7d94
3 changed files with 38 additions and 4 deletions
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10
arch/arm/mach-uniphier/arm64/mem_map.c
View File

@ -7,6 +7,8 @@
#include <linux/types.h>
#include <asm/armv8/mmu.h>
#include "../init.h"
static struct mm_region uniphier_mem_map[] = {
{
.virt = 0x00000000,
@ -27,3 +29,11 @@ static struct mm_region uniphier_mem_map[] = {
};
struct mm_region *mem_map = uniphier_mem_map;
void uniphier_mem_map_init(unsigned long dram_base, unsigned long dram_size)
{
uniphier_mem_map[0].size = dram_base;
uniphier_mem_map[1].virt = dram_base;
uniphier_mem_map[1].phys = dram_base;
uniphier_mem_map[1].size = dram_size;
}

24
arch/arm/mach-uniphier/dram_init.c
View File

@ -13,6 +13,7 @@
#include <linux/sizes.h>
#include <asm/global_data.h>
#include "init.h"
#include "sg-regs.h"
#include "soc-info.h"
@ -271,6 +272,8 @@ int dram_init(void)
int dram_init_banksize(void)
{
struct uniphier_dram_map dram_map[3] = {};
unsigned long base, top;
bool valid_bank_found = false;
int ret, i;
ret = uniphier_dram_map_get(dram_map);
@ -278,12 +281,25 @@ int dram_init_banksize(void)
return ret;
for (i = 0; i < ARRAY_SIZE(dram_map); i++) {
if (i >= ARRAY_SIZE(gd->bd->bi_dram))
break;
if (i < ARRAY_SIZE(gd->bd->bi_dram)) {
gd->bd->bi_dram[i].start = dram_map[i].base;
gd->bd->bi_dram[i].size = dram_map[i].size;
}
gd->bd->bi_dram[i].start = dram_map[i].base;
gd->bd->bi_dram[i].size = dram_map[i].size;
if (!dram_map[i].size)
continue;
if (!valid_bank_found)
base = dram_map[i].base;
top = dram_map[i].base + dram_map[i].size;
valid_bank_found = true;
}
if (!valid_bank_found)
return -EINVAL;
/* map all the DRAM regions */
uniphier_mem_map_init(base, top - base);
return 0;
}

8
arch/arm/mach-uniphier/init.h
View File

@ -102,5 +102,13 @@ unsigned int uniphier_boot_device_raw(void);
int uniphier_have_internal_stm(void);
int uniphier_boot_from_backend(void);
int uniphier_pin_init(const char *pinconfig_name);
#ifdef CONFIG_ARM64
void uniphier_mem_map_init(unsigned long dram_base, unsigned long dram_size);
#else
static inline void uniphier_mem_map_init(unsigned long dram_base,
unsigned long dram_size)
{
}
#endif
#endif /* __MACH_INIT_H */