[U-Boot] [PATCH v7 2/2] armv8: fsl-layerscape: Make DDR non secure in MMU tables
York Sun
yorksun at freescale.com
Fri Dec 4 20:57:08 CET 2015
DDR has been set as secure in MMU tables. Non-secure master such
as SDHC DMA cannot access data correctly. Mixing secure and non-
secure MMU entries requirs the MMU tables themselves in secure
memory. This patch moves MMU tables into a secure DDR area.
Early MMU tables are changed to set DDR as non-secure. A new
table is added into final MMU tables so secure memory can have
2MB granuality.
gd->secure_ram tracks the location of this secure memory. For
ARMv8 SoCs, the RAM base is not zero and RAM is divided into several
banks. gd->secure_ram needs to be maintained before using. This
maintenance is board-specific, depending on the SoC and memory
bank of the secure memory falls into.
Signed-off-by: York Sun <yorksun at freescale.com>
---
Changes in v7:
Rebase to recent master
Update ls1043ardb ddr.c
Add change to ls1043qds ddr.c
Check exception level before setting secure memory
Leave gd->arch.tlb_addr unused if secure memory is setup
Changes in v6:
Move cmd_bdinfo change to 1st patch in this set
Rearrange #ifdef CONFIG_SYS_MEM_RESERVE_SECURE
Changes in v5:
Put ifdef where gd->secure_ram is used
Changes in v4:
Drop RFC from patch prefix
Drop excessive mmu table for secure ram for early MMU
Update commit message accordingly
Mark QBMan cacheable portal memory non-secure
Changes in v3:
Replace CONFIG_FSL_PPA_RESERVED_DRAM_SIZE with CONFIG_SYS_MEM_RESERVE_SECURE
Sanity check gd->secure_ram before using
Define CONFIG_SYS_MEM_RESERVE_SECURE in SoC header file
Include ls1043ardb
Modified commit message.
Changes in v2:
Move gd->arch.secure_ram to gd->secure_ram.
Change the calculation of gd->secure_ram accordingly.
Chnage commit message slightly accordingly.
Changes in v1: None
arch/arm/cpu/armv8/fsl-layerscape/cpu.c | 121 ++++++++++++++++++---
arch/arm/include/asm/arch-fsl-layerscape/config.h | 6 +
arch/arm/include/asm/arch-fsl-layerscape/cpu.h | 14 ++-
board/freescale/ls1043aqds/ddr.c | 9 ++
board/freescale/ls1043ardb/ddr.c | 15 +++
board/freescale/ls2080a/ddr.c | 15 +++
board/freescale/ls2080aqds/ddr.c | 15 +++
board/freescale/ls2080ardb/ddr.c | 15 +++
8 files changed, 191 insertions(+), 19 deletions(-)
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
index 8847fc0..87ccaf1 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
@@ -206,11 +206,65 @@ static inline void early_mmu_setup(void)
set_sctlr(get_sctlr() | CR_M);
}
+#ifdef CONFIG_SYS_MEM_RESERVE_SECURE
+/*
+ * Called from final mmu setup. The phys_addr is new, non-existing
+ * address. A new sub table is created @level2_table_secure to cover
+ * size of CONFIG_SYS_MEM_RESERVE_SECURE memory.
+ */
+static inline int final_secure_ddr(u64 *level0_table,
+ u64 *level2_table_secure,
+ phys_addr_t phys_addr)
+{
+ int ret = -EINVAL;
+ struct table_info table = {};
+ struct sys_mmu_table ddr_entry = {
+ 0, 0, BLOCK_SIZE_L1, MT_NORMAL,
+ PMD_SECT_OUTER_SHARE | PMD_SECT_NS
+ };
+ u64 index;
+
+ /* Need to create a new table */
+ ddr_entry.virt_addr = phys_addr & ~(BLOCK_SIZE_L1 - 1);
+ ddr_entry.phys_addr = phys_addr & ~(BLOCK_SIZE_L1 - 1);
+ ret = find_table(&ddr_entry, &table, level0_table);
+ if (ret)
+ return ret;
+ index = (ddr_entry.virt_addr - table.table_base) >> SECTION_SHIFT_L1;
+ set_pgtable_table(table.ptr, index, level2_table_secure);
+ table.ptr = level2_table_secure;
+ table.table_base = ddr_entry.virt_addr;
+ table.entry_size = BLOCK_SIZE_L2;
+ ret = set_block_entry(&ddr_entry, &table);
+ if (ret) {
+ printf("MMU error: could not fill non-secure ddr block entries\n");
+ return ret;
+ }
+ ddr_entry.virt_addr = phys_addr;
+ ddr_entry.phys_addr = phys_addr;
+ ddr_entry.size = CONFIG_SYS_MEM_RESERVE_SECURE;
+ ddr_entry.attribute = PMD_SECT_OUTER_SHARE;
+ ret = find_table(&ddr_entry, &table, level0_table);
+ if (ret) {
+ printf("MMU error: could not find secure ddr table\n");
+ return ret;
+ }
+ ret = set_block_entry(&ddr_entry, &table);
+ if (ret)
+ printf("MMU error: could not set secure ddr block entry\n");
+
+ return ret;
+}
+#endif
+
/*
* The final tables look similar to early tables, but different in detail.
* These tables are in DRAM. Sub tables are added to enable cache for
* QBMan and OCRAM.
*
+ * Put the MMU table in secure memory if gd->secure_ram is valid.
+ * OCRAM will be not used for this purpose so gd->secure_ram can't be 0.
+ *
* Level 1 table 0 contains 512 entries for each 1GB from 0 to 512GB.
* Level 1 table 1 contains 512 entries for each 1GB from 512GB to 1TB.
* Level 2 table 0 contains 512 entries for each 2MB from 0 to 1GB.
@@ -223,18 +277,40 @@ static inline void early_mmu_setup(void)
*/
static inline void final_mmu_setup(void)
{
- unsigned int el, i;
+ unsigned int el = current_el();
+ unsigned int i;
u64 *level0_table = (u64 *)gd->arch.tlb_addr;
- u64 *level1_table0 = (u64 *)(gd->arch.tlb_addr + 0x1000);
- u64 *level1_table1 = (u64 *)(gd->arch.tlb_addr + 0x2000);
- u64 *level2_table0 = (u64 *)(gd->arch.tlb_addr + 0x3000);
-#ifdef CONFIG_FSL_LSCH3
- u64 *level2_table1 = (u64 *)(gd->arch.tlb_addr + 0x4000);
-#elif defined(CONFIG_FSL_LSCH2)
- u64 *level2_table1 = (u64 *)(gd->arch.tlb_addr + 0x4000);
- u64 *level2_table2 = (u64 *)(gd->arch.tlb_addr + 0x5000);
+ u64 *level1_table0;
+ u64 *level1_table1;
+ u64 *level2_table0;
+ u64 *level2_table1;
+#ifdef CONFIG_FSL_LSCH2
+ u64 *level2_table2;
#endif
- struct table_info table = {level0_table, 0, BLOCK_SIZE_L0};
+ struct table_info table = {NULL, 0, BLOCK_SIZE_L0};
+
+#ifdef CONFIG_SYS_MEM_RESERVE_SECURE
+ u64 *level2_table_secure;
+
+ if (el == 3) {
+ /*
+ * Only use gd->secure_ram if the address is recalculated
+ * Align to 4KB for MMU table
+ */
+ if (gd->secure_ram & MEM_RESERVE_SECURE_MAINTAINED)
+ level0_table = (u64 *)(gd->secure_ram & ~0xfff);
+ else
+ printf("MMU warning: gd->secure_ram is not maintained, disabled.\n");
+ }
+#endif
+ level1_table0 = level0_table + 512;
+ level1_table1 = level1_table0 + 512;
+ level2_table0 = level1_table1 + 512;
+ level2_table1 = level2_table0 + 512;
+#ifdef CONFIG_FSL_LSCH2
+ level2_table2 = level2_table1 + 512;
+#endif
+ table.ptr = level0_table;
/* Invalidate all table entries */
memset(level0_table, 0, PGTABLE_SIZE);
@@ -269,17 +345,34 @@ static inline void final_mmu_setup(void)
&final_mmu_table[i]);
}
}
+ /* Set the secure memory to secure in MMU */
+#ifdef CONFIG_SYS_MEM_RESERVE_SECURE
+ if (el == 3 && gd->secure_ram & MEM_RESERVE_SECURE_MAINTAINED) {
+#ifdef CONFIG_FSL_LSCH3
+ level2_table_secure = level2_table1 + 512;
+#elif defined(CONFIG_FSL_LSCH2)
+ level2_table_secure = level2_table2 + 512;
+#endif
+ if (!final_secure_ddr(level0_table,
+ level2_table_secure,
+ gd->secure_ram & ~0x3)) {
+ gd->secure_ram |= MEM_RESERVE_SECURE_SECURED;
+ debug("Now MMU table is in secured memory at 0x%llx\n",
+ gd->secure_ram & ~0x3);
+ } else {
+ printf("MMU warning: Failed to secure DDR\n");
+ }
+ }
+#endif
/* flush new MMU table */
- flush_dcache_range(gd->arch.tlb_addr,
- gd->arch.tlb_addr + gd->arch.tlb_size);
+ flush_dcache_range((ulong)level0_table,
+ (ulong)level0_table + gd->arch.tlb_size);
#ifdef CONFIG_SYS_DPAA_FMAN
flush_dcache_all();
#endif
/* point TTBR to the new table */
- el = current_el();
-
set_ttbr_tcr_mair(el, (u64)level0_table, LAYERSCAPE_TCR_FINAL,
MEMORY_ATTRIBUTES);
/*
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/config.h b/arch/arm/include/asm/arch-fsl-layerscape/config.h
index f2b4d93..6e5224e 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/config.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/config.h
@@ -17,6 +17,12 @@
#define CONFIG_SYS_FSL_DDR /* Freescale DDR driver */
#define CONFIG_SYS_FSL_DDR_VER FSL_DDR_VER_5_0
+/*
+ * Reserve secure memory
+ * To be aligned with MMU block size
+ */
+#define CONFIG_SYS_MEM_RESERVE_SECURE (2048 * 1024) /* 2MB */
+
#if defined(CONFIG_LS2080A) || defined(CONFIG_LS2085A)
#define CONFIG_MAX_CPUS 16
#define CONFIG_SYS_FSL_IFC_BANK_COUNT 8
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/cpu.h b/arch/arm/include/asm/arch-fsl-layerscape/cpu.h
index 4544094..e030430 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/cpu.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/cpu.h
@@ -129,7 +129,8 @@ static const struct sys_mmu_table early_mmu_table[] = {
{ CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FSL_IFC_BASE1,
CONFIG_SYS_FSL_IFC_SIZE1, MT_DEVICE_NGNRNE, PMD_SECT_NON_SHARE },
{ CONFIG_SYS_FSL_DRAM_BASE1, CONFIG_SYS_FSL_DRAM_BASE1,
- CONFIG_SYS_FSL_DRAM_SIZE1, MT_NORMAL, PMD_SECT_OUTER_SHARE },
+ CONFIG_SYS_FSL_DRAM_SIZE1, MT_NORMAL,
+ PMD_SECT_OUTER_SHARE | PMD_SECT_NS },
/* Map IFC region #2 up to CONFIG_SYS_FLASH_BASE for NAND boot */
{ CONFIG_SYS_FSL_IFC_BASE2, CONFIG_SYS_FSL_IFC_BASE2,
CONFIG_SYS_FLASH_BASE - CONFIG_SYS_FSL_IFC_BASE2,
@@ -138,7 +139,8 @@ static const struct sys_mmu_table early_mmu_table[] = {
CONFIG_SYS_FSL_DCSR_SIZE, MT_DEVICE_NGNRNE,
PMD_SECT_NON_SHARE | PMD_SECT_PXN | PMD_SECT_UXN },
{ CONFIG_SYS_FSL_DRAM_BASE2, CONFIG_SYS_FSL_DRAM_BASE2,
- CONFIG_SYS_FSL_DRAM_SIZE2, MT_NORMAL, PMD_SECT_OUTER_SHARE },
+ CONFIG_SYS_FSL_DRAM_SIZE2, MT_NORMAL,
+ PMD_SECT_OUTER_SHARE | PMD_SECT_NS },
#elif defined(CONFIG_FSL_LSCH2)
{ CONFIG_SYS_FSL_CCSR_BASE, CONFIG_SYS_FSL_CCSR_BASE,
CONFIG_SYS_FSL_CCSR_SIZE, MT_DEVICE_NGNRNE,
@@ -165,7 +167,8 @@ static const struct sys_mmu_table final_mmu_table[] = {
{ CONFIG_SYS_FSL_OCRAM_BASE, CONFIG_SYS_FSL_OCRAM_BASE,
CONFIG_SYS_FSL_OCRAM_SIZE, MT_NORMAL, PMD_SECT_NON_SHARE },
{ CONFIG_SYS_FSL_DRAM_BASE1, CONFIG_SYS_FSL_DRAM_BASE1,
- CONFIG_SYS_FSL_DRAM_SIZE1, MT_NORMAL, PMD_SECT_OUTER_SHARE },
+ CONFIG_SYS_FSL_DRAM_SIZE1, MT_NORMAL,
+ PMD_SECT_OUTER_SHARE | PMD_SECT_NS },
{ CONFIG_SYS_FSL_QSPI_BASE2, CONFIG_SYS_FSL_QSPI_BASE2,
CONFIG_SYS_FSL_QSPI_SIZE2, MT_DEVICE_NGNRNE,
PMD_SECT_NON_SHARE | PMD_SECT_PXN | PMD_SECT_UXN },
@@ -183,7 +186,7 @@ static const struct sys_mmu_table final_mmu_table[] = {
/* For QBMAN portal, only the first 64MB is cache-enabled */
{ CONFIG_SYS_FSL_QBMAN_BASE, CONFIG_SYS_FSL_QBMAN_BASE,
CONFIG_SYS_FSL_QBMAN_SIZE_1, MT_NORMAL,
- PMD_SECT_NON_SHARE | PMD_SECT_PXN | PMD_SECT_UXN },
+ PMD_SECT_NON_SHARE | PMD_SECT_PXN | PMD_SECT_UXN | PMD_SECT_NS },
{ CONFIG_SYS_FSL_QBMAN_BASE + CONFIG_SYS_FSL_QBMAN_SIZE_1,
CONFIG_SYS_FSL_QBMAN_BASE + CONFIG_SYS_FSL_QBMAN_SIZE_1,
CONFIG_SYS_FSL_QBMAN_SIZE - CONFIG_SYS_FSL_QBMAN_SIZE_1,
@@ -212,7 +215,8 @@ static const struct sys_mmu_table final_mmu_table[] = {
CONFIG_SYS_FSL_PEBUF_SIZE, MT_DEVICE_NGNRNE,
PMD_SECT_NON_SHARE | PMD_SECT_PXN | PMD_SECT_UXN },
{ CONFIG_SYS_FSL_DRAM_BASE2, CONFIG_SYS_FSL_DRAM_BASE2,
- CONFIG_SYS_FSL_DRAM_SIZE2, MT_NORMAL, PMD_SECT_OUTER_SHARE },
+ CONFIG_SYS_FSL_DRAM_SIZE2, MT_NORMAL,
+ PMD_SECT_OUTER_SHARE | PMD_SECT_NS },
#elif defined(CONFIG_FSL_LSCH2)
{ CONFIG_SYS_FSL_BOOTROM_BASE, CONFIG_SYS_FSL_BOOTROM_BASE,
CONFIG_SYS_FSL_BOOTROM_SIZE, MT_DEVICE_NGNRNE,
diff --git a/board/freescale/ls1043aqds/ddr.c b/board/freescale/ls1043aqds/ddr.c
index 705e384..42d9068 100644
--- a/board/freescale/ls1043aqds/ddr.c
+++ b/board/freescale/ls1043aqds/ddr.c
@@ -126,6 +126,15 @@ phys_size_t initdram(int board_type)
void dram_init_banksize(void)
{
+ /*
+ * gd->secure_ram tracks the location of secure memory.
+ * It was set as if the memory starts from 0.
+ * The address needs to add the offset of its bank.
+ */
gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
gd->bd->bi_dram[0].size = gd->ram_size;
+#ifdef CONFIG_SYS_MEM_RESERVE_SECURE
+ gd->secure_ram = gd->bd->bi_dram[0].start + gd->secure_ram;
+ gd->secure_ram |= MEM_RESERVE_SECURE_MAINTAINED;
+#endif
}
diff --git a/board/freescale/ls1043ardb/ddr.c b/board/freescale/ls1043ardb/ddr.c
index 249d056..11bc0f2 100644
--- a/board/freescale/ls1043ardb/ddr.c
+++ b/board/freescale/ls1043ardb/ddr.c
@@ -186,13 +186,28 @@ phys_size_t initdram(int board_type)
void dram_init_banksize(void)
{
+ /*
+ * gd->secure_ram tracks the location of secure memory.
+ * It was set as if the memory starts from 0.
+ * The address needs to add the offset of its bank.
+ */
gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
if (gd->ram_size > CONFIG_SYS_DDR_BLOCK1_SIZE) {
gd->bd->bi_dram[0].size = CONFIG_SYS_DDR_BLOCK1_SIZE;
gd->bd->bi_dram[1].start = CONFIG_SYS_DDR_BLOCK2_BASE;
gd->bd->bi_dram[1].size = gd->ram_size -
CONFIG_SYS_DDR_BLOCK1_SIZE;
+#ifdef CONFIG_SYS_MEM_RESERVE_SECURE
+ gd->secure_ram = gd->bd->bi_dram[1].start +
+ gd->secure_ram -
+ CONFIG_SYS_DDR_BLOCK1_SIZE;
+ gd->secure_ram |= MEM_RESERVE_SECURE_MAINTAINED;
+#endif
} else {
gd->bd->bi_dram[0].size = gd->ram_size;
+#ifdef CONFIG_SYS_MEM_RESERVE_SECURE
+ gd->secure_ram = gd->bd->bi_dram[0].start + gd->secure_ram;
+ gd->secure_ram |= MEM_RESERVE_SECURE_MAINTAINED;
+#endif
}
}
diff --git a/board/freescale/ls2080a/ddr.c b/board/freescale/ls2080a/ddr.c
index 47d73ef..56c5d96 100644
--- a/board/freescale/ls2080a/ddr.c
+++ b/board/freescale/ls2080a/ddr.c
@@ -175,14 +175,29 @@ void dram_init_banksize(void)
phys_size_t dp_ddr_size;
#endif
+ /*
+ * gd->secure_ram tracks the location of secure memory.
+ * It was set as if the memory starts from 0.
+ * The address needs to add the offset of its bank.
+ */
gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
if (gd->ram_size > CONFIG_SYS_LS2_DDR_BLOCK1_SIZE) {
gd->bd->bi_dram[0].size = CONFIG_SYS_LS2_DDR_BLOCK1_SIZE;
gd->bd->bi_dram[1].start = CONFIG_SYS_DDR_BLOCK2_BASE;
gd->bd->bi_dram[1].size = gd->ram_size -
CONFIG_SYS_LS2_DDR_BLOCK1_SIZE;
+#ifdef CONFIG_SYS_MEM_RESERVE_SECURE
+ gd->secure_ram = gd->bd->bi_dram[1].start +
+ gd->secure_ram -
+ CONFIG_SYS_LS2_DDR_BLOCK1_SIZE;
+ gd->secure_ram |= MEM_RESERVE_SECURE_MAINTAINED;
+#endif
} else {
gd->bd->bi_dram[0].size = gd->ram_size;
+#ifdef CONFIG_SYS_MEM_RESERVE_SECURE
+ gd->secure_ram = gd->bd->bi_dram[0].start + gd->secure_ram;
+ gd->secure_ram |= MEM_RESERVE_SECURE_MAINTAINED;
+#endif
}
#ifdef CONFIG_SYS_DP_DDR_BASE_PHY
diff --git a/board/freescale/ls2080aqds/ddr.c b/board/freescale/ls2080aqds/ddr.c
index 7e67ee0..9fb5e11 100644
--- a/board/freescale/ls2080aqds/ddr.c
+++ b/board/freescale/ls2080aqds/ddr.c
@@ -175,14 +175,29 @@ void dram_init_banksize(void)
phys_size_t dp_ddr_size;
#endif
+ /*
+ * gd->secure_ram tracks the location of secure memory.
+ * It was set as if the memory starts from 0.
+ * The address needs to add the offset of its bank.
+ */
gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
if (gd->ram_size > CONFIG_SYS_LS2_DDR_BLOCK1_SIZE) {
gd->bd->bi_dram[0].size = CONFIG_SYS_LS2_DDR_BLOCK1_SIZE;
gd->bd->bi_dram[1].start = CONFIG_SYS_DDR_BLOCK2_BASE;
gd->bd->bi_dram[1].size = gd->ram_size -
CONFIG_SYS_LS2_DDR_BLOCK1_SIZE;
+#ifdef CONFIG_SYS_MEM_RESERVE_SECURE
+ gd->secure_ram = gd->bd->bi_dram[1].start +
+ gd->secure_ram -
+ CONFIG_SYS_LS2_DDR_BLOCK1_SIZE;
+ gd->secure_ram |= MEM_RESERVE_SECURE_MAINTAINED;
+#endif
} else {
gd->bd->bi_dram[0].size = gd->ram_size;
+#ifdef CONFIG_SYS_MEM_RESERVE_SECURE
+ gd->secure_ram = gd->bd->bi_dram[0].start + gd->secure_ram;
+ gd->secure_ram |= MEM_RESERVE_SECURE_MAINTAINED;
+#endif
}
#ifdef CONFIG_SYS_DP_DDR_BASE_PHY
diff --git a/board/freescale/ls2080ardb/ddr.c b/board/freescale/ls2080ardb/ddr.c
index 76f3b59..6c19173 100644
--- a/board/freescale/ls2080ardb/ddr.c
+++ b/board/freescale/ls2080ardb/ddr.c
@@ -175,14 +175,29 @@ void dram_init_banksize(void)
phys_size_t dp_ddr_size;
#endif
+ /*
+ * gd->secure_ram tracks the location of secure memory.
+ * It was set as if the memory starts from 0.
+ * The address needs to add the offset of its bank.
+ */
gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
if (gd->ram_size > CONFIG_SYS_LS2_DDR_BLOCK1_SIZE) {
gd->bd->bi_dram[0].size = CONFIG_SYS_LS2_DDR_BLOCK1_SIZE;
gd->bd->bi_dram[1].start = CONFIG_SYS_DDR_BLOCK2_BASE;
gd->bd->bi_dram[1].size = gd->ram_size -
CONFIG_SYS_LS2_DDR_BLOCK1_SIZE;
+#ifdef CONFIG_SYS_MEM_RESERVE_SECURE
+ gd->secure_ram = gd->bd->bi_dram[1].start +
+ gd->secure_ram -
+ CONFIG_SYS_LS2_DDR_BLOCK1_SIZE;
+ gd->secure_ram |= MEM_RESERVE_SECURE_MAINTAINED;
+#endif
} else {
gd->bd->bi_dram[0].size = gd->ram_size;
+#ifdef CONFIG_SYS_MEM_RESERVE_SECURE
+ gd->secure_ram = gd->bd->bi_dram[0].start + gd->secure_ram;
+ gd->secure_ram |= MEM_RESERVE_SECURE_MAINTAINED;
+#endif
}
#ifdef CONFIG_SYS_DP_DDR_BASE_PHY
--
1.7.9.5
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