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mach-k3: map all banks using mem_map_from_dram_banks

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The static memory map for K3 (k3_mem_map) only maps the first DRAM bank
and therefore doesn't scale for platforms with multiple memory banks.

This patch modifies enable_caches to add mem_map_from_dram_banks which
appends all the memory banks to k3_mem_map before calling mmu_setup.

Signed-off-by: Anshul Dalal <anshuld@ti.com>
Tested-by: Wadim Egorov <w.egorov@phytec.de>
This commit is contained in:
Anshul Dalal
2025-10-17 18:45:28 +05:30
committed by Tom Rini
parent fe2647f2a0
commit f1c694b8fd
3 changed files with 18 additions and 2 deletions
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5
arch/arm/mach-k3/arm64/arm64-mmu.c
View File

@@ -12,8 +12,9 @@
#include <asm/system.h>
#include <asm/armv8/mmu.h>
#include <linux/sizes.h>
#include <mach/k3-ddr.h>
struct mm_region k3_mem_map[] = {
struct mm_region k3_mem_map[K3_MEM_MAP_LEN] = {
{ /* SoC Peripherals */
.virt = 0x0UL,
.phys = 0x0UL,
@@ -28,7 +29,7 @@ struct mm_region k3_mem_map[] = {
.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE |
PTE_BLOCK_PXN | PTE_BLOCK_UXN
}, { /* First DRAM Bank of size 2G */
}, [K3_MEM_MAP_FIRST_BANK_IDX] = { /* First DRAM Bank of size 2G */
.virt = CFG_SYS_SDRAM_BASE,
.phys = CFG_SYS_SDRAM_BASE,
.size = SZ_2G,

9
arch/arm/mach-k3/common.c
View File

@@ -31,6 +31,7 @@
#include <dm/uclass-internal.h>
#include <dm/device-internal.h>
#include <asm/armv8/mmu.h>
#include <mach/k3-ddr.h>
#define PROC_BOOT_CTRL_FLAG_R5_CORE_HALT 0x00000001
#define PROC_BOOT_STATUS_FLAG_R5_WFI 0x00000002
@@ -262,6 +263,14 @@ void board_prep_linux(struct bootm_headers *images)
void enable_caches(void)
{
int ret;
ret = mem_map_from_dram_banks(K3_MEM_MAP_FIRST_BANK_IDX, K3_MEM_MAP_LEN,
PTE_BLOCK_MEMTYPE(MT_NORMAL) |
PTE_BLOCK_INNER_SHARE);
if (ret)
debug("%s: Failed to setup dram banks\n", __func__);
mmu_setup();
icache_enable();

6
arch/arm/mach-k3/include/mach/k3-ddr.h
View File

@@ -8,6 +8,12 @@
#include <spl.h>
/* We need 3 extra entries for:
* SoC peripherals, flash and the sentinel value.
*/
#define K3_MEM_MAP_LEN ((CONFIG_NR_DRAM_BANKS) + 3)
#define K3_MEM_MAP_FIRST_BANK_IDX 2
int dram_init(void);
int dram_init_banksize(void);