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 ---
arch/arm/mach-uniphier/arm64/mem_map.c | 10 ++++++++++ arch/arm/mach-uniphier/dram_init.c | 24 ++++++++++++++++++++---- arch/arm/mach-uniphier/init.h | 8 ++++++++ 3 files changed, 38 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mach-uniphier/arm64/mem_map.c b/arch/arm/mach-uniphier/arm64/mem_map.c index 35e75e2ab2d2..7653bd2d3c65 100644 --- a/arch/arm/mach-uniphier/arm64/mem_map.c +++ b/arch/arm/mach-uniphier/arm64/mem_map.c @@ -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; +} diff --git a/arch/arm/mach-uniphier/dram_init.c b/arch/arm/mach-uniphier/dram_init.c index ab4aa93f42a6..970fa09ef03c 100644 --- a/arch/arm/mach-uniphier/dram_init.c +++ b/arch/arm/mach-uniphier/dram_init.c @@ -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; + } + + if (!dram_map[i].size) + continue;
- gd->bd->bi_dram[i].start = dram_map[i].base; - gd->bd->bi_dram[i].size = dram_map[i].size; + 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; } diff --git a/arch/arm/mach-uniphier/init.h b/arch/arm/mach-uniphier/init.h index c6b3f3656ccc..b37ab2fa508d 100644 --- a/arch/arm/mach-uniphier/init.h +++ b/arch/arm/mach-uniphier/init.h @@ -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 */