summaryrefslogtreecommitdiff
path: root/arch/arm/cpu/armv7/ls102xa/cpu.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/cpu/armv7/ls102xa/cpu.c')
-rw-r--r--arch/arm/cpu/armv7/ls102xa/cpu.c231
1 files changed, 221 insertions, 10 deletions
diff --git a/arch/arm/cpu/armv7/ls102xa/cpu.c b/arch/arm/cpu/armv7/ls102xa/cpu.c
index ce2d92f5a6..1a640bbb9c 100644
--- a/arch/arm/cpu/armv7/ls102xa/cpu.c
+++ b/arch/arm/cpu/armv7/ls102xa/cpu.c
@@ -8,14 +8,214 @@
#include <asm/arch/clock.h>
#include <asm/io.h>
#include <asm/arch/immap_ls102xa.h>
+#include <asm/cache.h>
+#include <asm/system.h>
#include <tsec.h>
#include <netdev.h>
#include <fsl_esdhc.h>
#include "fsl_epu.h"
+#define DCSR_RCPM2_BLOCK_OFFSET 0x223000
+#define DCSR_RCPM2_CPMFSMCR0 0x400
+#define DCSR_RCPM2_CPMFSMSR0 0x404
+#define DCSR_RCPM2_CPMFSMCR1 0x414
+#define DCSR_RCPM2_CPMFSMSR1 0x418
+#define CPMFSMSR_FSM_STATE_MASK 0x7f
+
DECLARE_GLOBAL_DATA_PTR;
+#ifndef CONFIG_SYS_DCACHE_OFF
+
+/*
+ * Bit[1] of the descriptor indicates the descriptor type,
+ * and bit[0] indicates whether the descriptor is valid.
+ */
+#define PMD_TYPE_TABLE 0x3
+#define PMD_TYPE_SECT 0x1
+
+/* AttrIndx[2:0] */
+#define PMD_ATTRINDX(t) ((t) << 2)
+
+/* Section */
+#define PMD_SECT_AF (1 << 10)
+
+#define BLOCK_SIZE_L1 (1UL << 30)
+#define BLOCK_SIZE_L2 (1UL << 21)
+
+/* TTBCR flags */
+#define TTBCR_EAE (1 << 31)
+#define TTBCR_T0SZ(x) ((x) << 0)
+#define TTBCR_T1SZ(x) ((x) << 16)
+#define TTBCR_USING_TTBR0 (TTBCR_T0SZ(0) | TTBCR_T1SZ(0))
+#define TTBCR_IRGN0_NC (0 << 8)
+#define TTBCR_IRGN0_WBWA (1 << 8)
+#define TTBCR_IRGN0_WT (2 << 8)
+#define TTBCR_IRGN0_WBNWA (3 << 8)
+#define TTBCR_IRGN0_MASK (3 << 8)
+#define TTBCR_ORGN0_NC (0 << 10)
+#define TTBCR_ORGN0_WBWA (1 << 10)
+#define TTBCR_ORGN0_WT (2 << 10)
+#define TTBCR_ORGN0_WBNWA (3 << 10)
+#define TTBCR_ORGN0_MASK (3 << 10)
+#define TTBCR_SHARED_NON (0 << 12)
+#define TTBCR_SHARED_OUTER (2 << 12)
+#define TTBCR_SHARED_INNER (3 << 12)
+#define TTBCR_EPD0 (0 << 7)
+#define TTBCR (TTBCR_SHARED_NON | \
+ TTBCR_ORGN0_NC | \
+ TTBCR_IRGN0_NC | \
+ TTBCR_USING_TTBR0 | \
+ TTBCR_EAE)
+
+/*
+ * Memory region attributes for LPAE (defined in pgtable):
+ *
+ * n = AttrIndx[2:0]
+ *
+ * n MAIR
+ * UNCACHED 000 00000000
+ * BUFFERABLE 001 01000100
+ * DEV_WC 001 01000100
+ * WRITETHROUGH 010 10101010
+ * WRITEBACK 011 11101110
+ * DEV_CACHED 011 11101110
+ * DEV_SHARED 100 00000100
+ * DEV_NONSHARED 100 00000100
+ * unused 101
+ * unused 110
+ * WRITEALLOC 111 11111111
+ */
+#define MT_MAIR0 0xeeaa4400
+#define MT_MAIR1 0xff000004
+#define MT_STRONLY_ORDER 0
+#define MT_NORMAL_NC 1
+#define MT_DEVICE_MEM 4
+#define MT_NORMAL 7
+
+/* The phy_addr must be aligned to 4KB */
+static inline void set_pgtable(u32 *page_table, u32 index, u32 phy_addr)
+{
+ u32 value = phy_addr | PMD_TYPE_TABLE;
+
+ page_table[2 * index] = value;
+ page_table[2 * index + 1] = 0;
+}
+
+/* The phy_addr must be aligned to 4KB */
+static inline void set_pgsection(u32 *page_table, u32 index, u64 phy_addr,
+ u32 memory_type)
+{
+ u64 value;
+
+ value = phy_addr | PMD_TYPE_SECT | PMD_SECT_AF;
+ value |= PMD_ATTRINDX(memory_type);
+ page_table[2 * index] = value & 0xFFFFFFFF;
+ page_table[2 * index + 1] = (value >> 32) & 0xFFFFFFFF;
+}
+
+/*
+ * Start MMU after DDR is available, we create MMU table in DRAM.
+ * The base address of TTLB is gd->arch.tlb_addr. We use two
+ * levels of translation tables here to cover 40-bit address space.
+ *
+ * The TTLBs are located at PHY 2G~4G.
+ *
+ * VA mapping:
+ *
+ * ------- <---- 0GB
+ * | |
+ * | |
+ * |-------| <---- 0x24000000
+ * |///////| ===> 192MB VA map for PCIe1 with offset 0x40_0000_0000
+ * |-------| <---- 0x300000000
+ * | |
+ * |-------| <---- 0x34000000
+ * |///////| ===> 192MB VA map for PCIe2 with offset 0x48_0000_0000
+ * |-------| <---- 0x40000000
+ * | |
+ * |-------| <---- 0x80000000 DDR0 space start
+ * |\\\\\\\|
+ *.|\\\\\\\| ===> 2GB VA map for 2GB DDR0 Memory space
+ * |\\\\\\\|
+ * ------- <---- 4GB DDR0 space end
+ */
+static void mmu_setup(void)
+{
+ u32 *level0_table = (u32 *)gd->arch.tlb_addr;
+ u32 *level1_table = (u32 *)(gd->arch.tlb_addr + 0x1000);
+ u64 va_start = 0;
+ u32 reg;
+ int i;
+
+ /* Level 0 Table 2-3 are used to map DDR */
+ set_pgsection(level0_table, 3, 3 * BLOCK_SIZE_L1, MT_NORMAL);
+ set_pgsection(level0_table, 2, 2 * BLOCK_SIZE_L1, MT_NORMAL);
+ /* Level 0 Table 1 is used to map device */
+ set_pgsection(level0_table, 1, 1 * BLOCK_SIZE_L1, MT_DEVICE_MEM);
+ /* Level 0 Table 0 is used to map device including PCIe MEM */
+ set_pgtable(level0_table, 0, (u32)level1_table);
+
+ /* Level 1 has 512 entries */
+ for (i = 0; i < 512; i++) {
+ /* Mapping for PCIe 1 */
+ if (va_start >= CONFIG_SYS_PCIE1_VIRT_ADDR &&
+ va_start < (CONFIG_SYS_PCIE1_VIRT_ADDR +
+ CONFIG_SYS_PCIE_MMAP_SIZE))
+ set_pgsection(level1_table, i,
+ CONFIG_SYS_PCIE1_PHYS_BASE + va_start,
+ MT_DEVICE_MEM);
+ /* Mapping for PCIe 2 */
+ else if (va_start >= CONFIG_SYS_PCIE2_VIRT_ADDR &&
+ va_start < (CONFIG_SYS_PCIE2_VIRT_ADDR +
+ CONFIG_SYS_PCIE_MMAP_SIZE))
+ set_pgsection(level1_table, i,
+ CONFIG_SYS_PCIE2_PHYS_BASE + va_start,
+ MT_DEVICE_MEM);
+ else
+ set_pgsection(level1_table, i,
+ va_start,
+ MT_DEVICE_MEM);
+ va_start += BLOCK_SIZE_L2;
+ }
+
+ asm volatile("dsb sy;isb");
+ asm volatile("mcr p15, 0, %0, c2, c0, 2" /* Write RT to TTBCR */
+ : : "r" (TTBCR) : "memory");
+ asm volatile("mcrr p15, 0, %0, %1, c2" /* TTBR 0 */
+ : : "r" ((u32)level0_table), "r" (0) : "memory");
+ asm volatile("mcr p15, 0, %0, c10, c2, 0" /* write MAIR 0 */
+ : : "r" (MT_MAIR0) : "memory");
+ asm volatile("mcr p15, 0, %0, c10, c2, 1" /* write MAIR 1 */
+ : : "r" (MT_MAIR1) : "memory");
+
+ /* Set the access control to all-supervisor */
+ asm volatile("mcr p15, 0, %0, c3, c0, 0"
+ : : "r" (~0));
+
+ /* Enable the mmu */
+ reg = get_cr();
+ set_cr(reg | CR_M);
+}
+
+/*
+ * This function is called from lib/board.c. It recreates MMU
+ * table in main memory. MMU and i/d-cache are enabled here.
+ */
+void enable_caches(void)
+{
+ /* Invalidate all TLB */
+ mmu_page_table_flush(gd->arch.tlb_addr,
+ gd->arch.tlb_addr + gd->arch.tlb_size);
+ /* Set up and enable mmu */
+ mmu_setup();
+
+ /* Invalidate & Enable d-cache */
+ invalidate_dcache_all();
+ set_cr(get_cr() | CR_C);
+}
+#endif /* #ifndef CONFIG_SYS_DCACHE_OFF */
+
#if defined(CONFIG_DISPLAY_CPUINFO)
int print_cpuinfo(void)
{
@@ -78,16 +278,6 @@ int print_cpuinfo(void)
}
#endif
-void enable_caches(void)
-{
-#ifndef CONFIG_SYS_ICACHE_OFF
- icache_enable();
-#endif
-#ifndef CONFIG_SYS_DCACHE_OFF
- dcache_enable();
-#endif
-}
-
#ifdef CONFIG_FSL_ESDHC
int cpu_mmc_init(bd_t *bis)
{
@@ -107,6 +297,27 @@ int cpu_eth_init(bd_t *bis)
int arch_cpu_init(void)
{
void *epu_base = (void *)(CONFIG_SYS_DCSRBAR + EPU_BLOCK_OFFSET);
+ void *rcpm2_base =
+ (void *)(CONFIG_SYS_DCSRBAR + DCSR_RCPM2_BLOCK_OFFSET);
+ u32 state;
+
+ /*
+ * The RCPM FSM state may not be reset after power-on.
+ * So, reset them.
+ */
+ state = in_be32(rcpm2_base + DCSR_RCPM2_CPMFSMSR0) &
+ CPMFSMSR_FSM_STATE_MASK;
+ if (state != 0) {
+ out_be32(rcpm2_base + DCSR_RCPM2_CPMFSMCR0, 0x80);
+ out_be32(rcpm2_base + DCSR_RCPM2_CPMFSMCR0, 0x0);
+ }
+
+ state = in_be32(rcpm2_base + DCSR_RCPM2_CPMFSMSR1) &
+ CPMFSMSR_FSM_STATE_MASK;
+ if (state != 0) {
+ out_be32(rcpm2_base + DCSR_RCPM2_CPMFSMCR1, 0x80);
+ out_be32(rcpm2_base + DCSR_RCPM2_CPMFSMCR1, 0x0);
+ }
/*
* After wakeup from deep sleep, Clear EPU registers
generated by cgit (git 2.34.1) at 2024-12-27 15:05:23 +0000