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Diffstat (limited to 'arch/arm/cpu/armv8/fsl-layerscape/cpu.c')
-rw-r--r--arch/arm/cpu/armv8/fsl-layerscape/cpu.c514
1 files changed, 514 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
new file mode 100644
index 0000000000..be7442d003
--- /dev/null
+++ b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
@@ -0,0 +1,514 @@
+/*
+ * Copyright 2014-2015 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/errno.h>
+#include <asm/system.h>
+#include <asm/armv8/mmu.h>
+#include <asm/io.h>
+#include <asm/arch/fsl_serdes.h>
+#include <asm/arch/soc.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/speed.h>
+#ifdef CONFIG_MP
+#include <asm/arch/mp.h>
+#endif
+#include <fm_eth.h>
+#include <fsl_debug_server.h>
+#include <fsl-mc/fsl_mc.h>
+#ifdef CONFIG_FSL_ESDHC
+#include <fsl_esdhc.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void cpu_name(char *name)
+{
+ struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
+ unsigned int i, svr, ver;
+
+ svr = gur_in32(&gur->svr);
+ ver = SVR_SOC_VER(svr);
+
+ for (i = 0; i < ARRAY_SIZE(cpu_type_list); i++)
+ if ((cpu_type_list[i].soc_ver & SVR_WO_E) == ver) {
+ strcpy(name, cpu_type_list[i].name);
+
+ if (IS_E_PROCESSOR(svr))
+ strcat(name, "E");
+ break;
+ }
+
+ if (i == ARRAY_SIZE(cpu_type_list))
+ strcpy(name, "unknown");
+}
+
+#ifndef CONFIG_SYS_DCACHE_OFF
+/*
+ * Set the block entries according to the information of the table.
+ */
+static int set_block_entry(const struct sys_mmu_table *list,
+ struct table_info *table)
+{
+ u64 block_size = 0, block_shift = 0;
+ u64 block_addr, index;
+ int j;
+
+ if (table->entry_size == BLOCK_SIZE_L1) {
+ block_size = BLOCK_SIZE_L1;
+ block_shift = SECTION_SHIFT_L1;
+ } else if (table->entry_size == BLOCK_SIZE_L2) {
+ block_size = BLOCK_SIZE_L2;
+ block_shift = SECTION_SHIFT_L2;
+ } else {
+ return -EINVAL;
+ }
+
+ block_addr = list->phys_addr;
+ index = (list->virt_addr - table->table_base) >> block_shift;
+
+ for (j = 0; j < (list->size >> block_shift); j++) {
+ set_pgtable_section(table->ptr,
+ index,
+ block_addr,
+ list->memory_type,
+ list->share);
+ block_addr += block_size;
+ index++;
+ }
+
+ return 0;
+}
+
+/*
+ * Find the corresponding table entry for the list.
+ */
+static int find_table(const struct sys_mmu_table *list,
+ struct table_info *table, u64 *level0_table)
+{
+ u64 index = 0, level = 0;
+ u64 *level_table = level0_table;
+ u64 temp_base = 0, block_size = 0, block_shift = 0;
+
+ while (level < 3) {
+ if (level == 0) {
+ block_size = BLOCK_SIZE_L0;
+ block_shift = SECTION_SHIFT_L0;
+ } else if (level == 1) {
+ block_size = BLOCK_SIZE_L1;
+ block_shift = SECTION_SHIFT_L1;
+ } else if (level == 2) {
+ block_size = BLOCK_SIZE_L2;
+ block_shift = SECTION_SHIFT_L2;
+ }
+
+ index = 0;
+ while (list->virt_addr >= temp_base) {
+ index++;
+ temp_base += block_size;
+ }
+
+ temp_base -= block_size;
+
+ if ((level_table[index - 1] & PMD_TYPE_MASK) ==
+ PMD_TYPE_TABLE) {
+ level_table = (u64 *)(level_table[index - 1] &
+ ~PMD_TYPE_MASK);
+ level++;
+ continue;
+ } else {
+ if (level == 0)
+ return -EINVAL;
+
+ if ((list->phys_addr + list->size) >
+ (temp_base + block_size * NUM_OF_ENTRY))
+ return -EINVAL;
+
+ /*
+ * Check the address and size of the list member is
+ * aligned with the block size.
+ */
+ if (((list->phys_addr & (block_size - 1)) != 0) ||
+ ((list->size & (block_size - 1)) != 0))
+ return -EINVAL;
+
+ table->ptr = level_table;
+ table->table_base = temp_base -
+ ((index - 1) << block_shift);
+ table->entry_size = block_size;
+
+ return 0;
+ }
+ }
+ return -EINVAL;
+}
+
+/*
+ * To start MMU before DDR is available, we create MMU table in SRAM.
+ * The base address of SRAM is CONFIG_SYS_FSL_OCRAM_BASE. We use three
+ * levels of translation tables here to cover 40-bit address space.
+ * We use 4KB granule size, with 40 bits physical address, T0SZ=24
+ * Level 0 IA[39], table address @0
+ * Level 1 IA[38:30], table address @0x1000, 0x2000
+ * Level 2 IA[29:21], table address @0x3000, 0x4000
+ * Address above 0x5000 is free for other purpose.
+ */
+static inline void early_mmu_setup(void)
+{
+ unsigned int el, i;
+ u64 *level0_table = (u64 *)CONFIG_SYS_FSL_OCRAM_BASE;
+ u64 *level1_table0 = (u64 *)(CONFIG_SYS_FSL_OCRAM_BASE + 0x1000);
+ u64 *level1_table1 = (u64 *)(CONFIG_SYS_FSL_OCRAM_BASE + 0x2000);
+ u64 *level2_table0 = (u64 *)(CONFIG_SYS_FSL_OCRAM_BASE + 0x3000);
+ u64 *level2_table1 = (u64 *)(CONFIG_SYS_FSL_OCRAM_BASE + 0x4000);
+
+ struct table_info table = {level0_table, 0, BLOCK_SIZE_L0};
+
+ /* Invalidate all table entries */
+ memset(level0_table, 0, 0x5000);
+
+ /* Fill in the table entries */
+ set_pgtable_table(level0_table, 0, level1_table0);
+ set_pgtable_table(level0_table, 1, level1_table1);
+ set_pgtable_table(level1_table0, 0, level2_table0);
+
+#ifdef CONFIG_FSL_LSCH3
+ set_pgtable_table(level1_table0,
+ CONFIG_SYS_FLASH_BASE >> SECTION_SHIFT_L1,
+ level2_table1);
+#endif
+ /* Find the table and fill in the block entries */
+ for (i = 0; i < ARRAY_SIZE(early_mmu_table); i++) {
+ if (find_table(&early_mmu_table[i],
+ &table, level0_table) == 0) {
+ /*
+ * If find_table() returns error, it cannot be dealt
+ * with here. Breakpoint can be added for debugging.
+ */
+ set_block_entry(&early_mmu_table[i], &table);
+ /*
+ * If set_block_entry() returns error, it cannot be
+ * dealt with here too.
+ */
+ }
+ }
+
+ el = current_el();
+
+ set_ttbr_tcr_mair(el, (u64)level0_table, LAYERSCAPE_TCR,
+ MEMORY_ATTRIBUTES);
+ set_sctlr(get_sctlr() | CR_M);
+}
+
+/*
+ * 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.
+ *
+ * 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.
+ *
+ * For LSCH3:
+ * Level 2 table 1 contains 512 entries for each 2MB from 32GB to 33GB.
+ */
+static inline void final_mmu_setup(void)
+{
+ unsigned int el, 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);
+#endif
+ struct table_info table = {level0_table, 0, BLOCK_SIZE_L0};
+
+ /* Invalidate all table entries */
+ memset(level0_table, 0, PGTABLE_SIZE);
+
+ /* Fill in the table entries */
+ set_pgtable_table(level0_table, 0, level1_table0);
+ set_pgtable_table(level0_table, 1, level1_table1);
+ set_pgtable_table(level1_table0, 0, level2_table0);
+#ifdef CONFIG_FSL_LSCH3
+ set_pgtable_table(level1_table0,
+ CONFIG_SYS_FSL_QBMAN_BASE >> SECTION_SHIFT_L1,
+ level2_table1);
+#endif
+
+ /* Find the table and fill in the block entries */
+ for (i = 0; i < ARRAY_SIZE(final_mmu_table); i++) {
+ if (find_table(&final_mmu_table[i],
+ &table, level0_table) == 0) {
+ if (set_block_entry(&final_mmu_table[i],
+ &table) != 0) {
+ printf("MMU error: could not set block entry for %p\n",
+ &final_mmu_table[i]);
+ }
+
+ } else {
+ printf("MMU error: could not find the table for %p\n",
+ &final_mmu_table[i]);
+ }
+ }
+
+ /* flush new MMU table */
+ flush_dcache_range(gd->arch.tlb_addr,
+ gd->arch.tlb_addr + gd->arch.tlb_size);
+
+ /* point TTBR to the new table */
+ el = current_el();
+
+ set_ttbr_tcr_mair(el, (u64)level0_table, LAYERSCAPE_TCR_FINAL,
+ MEMORY_ATTRIBUTES);
+ /*
+ * MMU is already enabled, just need to invalidate TLB to load the
+ * new table. The new table is compatible with the current table, if
+ * MMU somehow walks through the new table before invalidation TLB,
+ * it still works. So we don't need to turn off MMU here.
+ */
+}
+
+int arch_cpu_init(void)
+{
+ icache_enable();
+ __asm_invalidate_dcache_all();
+ __asm_invalidate_tlb_all();
+ early_mmu_setup();
+ set_sctlr(get_sctlr() | CR_C);
+ return 0;
+}
+
+/*
+ * This function is called from lib/board.c.
+ * It recreates MMU table in main memory. MMU and d-cache are enabled earlier.
+ * There is no need to disable d-cache for this operation.
+ */
+void enable_caches(void)
+{
+ final_mmu_setup();
+ __asm_invalidate_tlb_all();
+}
+#endif
+
+static inline u32 initiator_type(u32 cluster, int init_id)
+{
+ struct ccsr_gur *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
+ u32 idx = (cluster >> (init_id * 8)) & TP_CLUSTER_INIT_MASK;
+ u32 type = 0;
+
+ type = gur_in32(&gur->tp_ityp[idx]);
+ if (type & TP_ITYP_AV)
+ return type;
+
+ return 0;
+}
+
+u32 cpu_mask(void)
+{
+ struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
+ int i = 0, count = 0;
+ u32 cluster, type, mask = 0;
+
+ do {
+ int j;
+
+ cluster = gur_in32(&gur->tp_cluster[i].lower);
+ for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
+ type = initiator_type(cluster, j);
+ if (type) {
+ if (TP_ITYP_TYPE(type) == TP_ITYP_TYPE_ARM)
+ mask |= 1 << count;
+ count++;
+ }
+ }
+ i++;
+ } while ((cluster & TP_CLUSTER_EOC) == 0x0);
+
+ return mask;
+}
+
+/*
+ * Return the number of cores on this SOC.
+ */
+int cpu_numcores(void)
+{
+ return hweight32(cpu_mask());
+}
+
+int fsl_qoriq_core_to_cluster(unsigned int core)
+{
+ struct ccsr_gur __iomem *gur =
+ (void __iomem *)(CONFIG_SYS_FSL_GUTS_ADDR);
+ int i = 0, count = 0;
+ u32 cluster;
+
+ do {
+ int j;
+
+ cluster = gur_in32(&gur->tp_cluster[i].lower);
+ for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
+ if (initiator_type(cluster, j)) {
+ if (count == core)
+ return i;
+ count++;
+ }
+ }
+ i++;
+ } while ((cluster & TP_CLUSTER_EOC) == 0x0);
+
+ return -1; /* cannot identify the cluster */
+}
+
+u32 fsl_qoriq_core_to_type(unsigned int core)
+{
+ struct ccsr_gur __iomem *gur =
+ (void __iomem *)(CONFIG_SYS_FSL_GUTS_ADDR);
+ int i = 0, count = 0;
+ u32 cluster, type;
+
+ do {
+ int j;
+
+ cluster = gur_in32(&gur->tp_cluster[i].lower);
+ for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
+ type = initiator_type(cluster, j);
+ if (type) {
+ if (count == core)
+ return type;
+ count++;
+ }
+ }
+ i++;
+ } while ((cluster & TP_CLUSTER_EOC) == 0x0);
+
+ return -1; /* cannot identify the cluster */
+}
+
+#ifdef CONFIG_DISPLAY_CPUINFO
+int print_cpuinfo(void)
+{
+ struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
+ struct sys_info sysinfo;
+ char buf[32];
+ unsigned int i, core;
+ u32 type, rcw;
+
+ puts("SoC: ");
+
+ cpu_name(buf);
+ printf(" %s (0x%x)\n", buf, gur_in32(&gur->svr));
+ memset((u8 *)buf, 0x00, ARRAY_SIZE(buf));
+ get_sys_info(&sysinfo);
+ puts("Clock Configuration:");
+ for_each_cpu(i, core, cpu_numcores(), cpu_mask()) {
+ if (!(i % 3))
+ puts("\n ");
+ type = TP_ITYP_VER(fsl_qoriq_core_to_type(core));
+ printf("CPU%d(%s):%-4s MHz ", core,
+ type == TY_ITYP_VER_A7 ? "A7 " :
+ (type == TY_ITYP_VER_A53 ? "A53" :
+ (type == TY_ITYP_VER_A57 ? "A57" : " ")),
+ strmhz(buf, sysinfo.freq_processor[core]));
+ }
+ printf("\n Bus: %-4s MHz ",
+ strmhz(buf, sysinfo.freq_systembus));
+ printf("DDR: %-4s MT/s", strmhz(buf, sysinfo.freq_ddrbus));
+#ifdef CONFIG_FSL_LSCH3
+ printf(" DP-DDR: %-4s MT/s", strmhz(buf, sysinfo.freq_ddrbus2));
+#endif
+ puts("\n");
+
+ /*
+ * Display the RCW, so that no one gets confused as to what RCW
+ * we're actually using for this boot.
+ */
+ puts("Reset Configuration Word (RCW):");
+ for (i = 0; i < ARRAY_SIZE(gur->rcwsr); i++) {
+ rcw = gur_in32(&gur->rcwsr[i]);
+ if ((i % 4) == 0)
+ printf("\n %08x:", i * 4);
+ printf(" %08x", rcw);
+ }
+ puts("\n");
+
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_FSL_ESDHC
+int cpu_mmc_init(bd_t *bis)
+{
+ return fsl_esdhc_mmc_init(bis);
+}
+#endif
+
+int cpu_eth_init(bd_t *bis)
+{
+ int error = 0;
+
+#ifdef CONFIG_FSL_MC_ENET
+ error = fsl_mc_ldpaa_init(bis);
+#endif
+ return error;
+}
+
+int arch_early_init_r(void)
+{
+#ifdef CONFIG_MP
+ int rv = 1;
+
+ rv = fsl_layerscape_wake_seconday_cores();
+ if (rv)
+ printf("Did not wake secondary cores\n");
+#endif
+
+#ifdef CONFIG_SYS_HAS_SERDES
+ fsl_serdes_init();
+#endif
+ return 0;
+}
+
+int timer_init(void)
+{
+ u32 __iomem *cntcr = (u32 *)CONFIG_SYS_FSL_TIMER_ADDR;
+#ifdef CONFIG_FSL_LSCH3
+ u32 __iomem *cltbenr = (u32 *)CONFIG_SYS_FSL_PMU_CLTBENR;
+#endif
+#ifdef COUNTER_FREQUENCY_REAL
+ unsigned long cntfrq = COUNTER_FREQUENCY_REAL;
+
+ /* Update with accurate clock frequency */
+ asm volatile("msr cntfrq_el0, %0" : : "r" (cntfrq) : "memory");
+#endif
+
+#ifdef CONFIG_FSL_LSCH3
+ /* Enable timebase for all clusters.
+ * It is safe to do so even some clusters are not enabled.
+ */
+ out_le32(cltbenr, 0xf);
+#endif
+
+ /* Enable clock for timer
+ * This is a global setting.
+ */
+ out_le32(cntcr, 0x1);
+
+ return 0;
+}
+
+void reset_cpu(ulong addr)
+{
+ u32 __iomem *rstcr = (u32 *)CONFIG_SYS_FSL_RST_ADDR;
+ u32 val;
+
+ /* Raise RESET_REQ_B */
+ val = scfg_in32(rstcr);
+ val |= 0x02;
+ scfg_out32(rstcr, val);
+}
generated by cgit (git 2.34.1) at 2025-01-16 11:39:30 +0000