2 * Copyright 2014-2015 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
9 #include <linux/errno.h>
10 #include <asm/system.h>
11 #include <asm/armv8/mmu.h>
13 #include <asm/arch/fsl_serdes.h>
14 #include <asm/arch/soc.h>
15 #include <asm/arch/cpu.h>
16 #include <asm/arch/speed.h>
18 #include <asm/arch/mp.h>
20 #include <efi_loader.h>
22 #include <fsl-mc/fsl_mc.h>
23 #ifdef CONFIG_FSL_ESDHC
24 #include <fsl_esdhc.h>
26 #ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
27 #include <asm/armv8/sec_firmware.h>
29 #ifdef CONFIG_SYS_FSL_DDR
33 DECLARE_GLOBAL_DATA_PTR;
35 struct mm_region *mem_map = early_map;
37 void cpu_name(char *name)
39 struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
40 unsigned int i, svr, ver;
42 svr = gur_in32(&gur->svr);
43 ver = SVR_SOC_VER(svr);
45 for (i = 0; i < ARRAY_SIZE(cpu_type_list); i++)
46 if ((cpu_type_list[i].soc_ver & SVR_WO_E) == ver) {
47 strcpy(name, cpu_type_list[i].name);
49 if (IS_E_PROCESSOR(svr))
52 sprintf(name + strlen(name), " Rev%d.%d",
53 SVR_MAJ(svr), SVR_MIN(svr));
57 if (i == ARRAY_SIZE(cpu_type_list))
58 strcpy(name, "unknown");
61 #ifndef CONFIG_SYS_DCACHE_OFF
63 * To start MMU before DDR is available, we create MMU table in SRAM.
64 * The base address of SRAM is CONFIG_SYS_FSL_OCRAM_BASE. We use three
65 * levels of translation tables here to cover 40-bit address space.
66 * We use 4KB granule size, with 40 bits physical address, T0SZ=24
67 * Address above EARLY_PGTABLE_SIZE (0x5000) is free for other purpose.
68 * Note, the debug print in cache_v8.c is not usable for debugging
69 * these early MMU tables because UART is not yet available.
71 static inline void early_mmu_setup(void)
73 unsigned int el = current_el();
75 /* global data is already setup, no allocation yet */
76 gd->arch.tlb_addr = CONFIG_SYS_FSL_OCRAM_BASE;
77 gd->arch.tlb_fillptr = gd->arch.tlb_addr;
78 gd->arch.tlb_size = EARLY_PGTABLE_SIZE;
80 /* Create early page tables */
83 /* point TTBR to the new table */
84 set_ttbr_tcr_mair(el, gd->arch.tlb_addr,
85 get_tcr(el, NULL, NULL) &
86 ~(TCR_ORGN_MASK | TCR_IRGN_MASK),
89 set_sctlr(get_sctlr() | CR_M);
93 * The final tables look similar to early tables, but different in detail.
94 * These tables are in DRAM. Sub tables are added to enable cache for
97 * Put the MMU table in secure memory if gd->arch.secure_ram is valid.
98 * OCRAM will be not used for this purpose so gd->arch.secure_ram can't be 0.
100 static inline void final_mmu_setup(void)
102 u64 tlb_addr_save = gd->arch.tlb_addr;
103 unsigned int el = current_el();
104 #ifdef CONFIG_SYS_MEM_RESERVE_SECURE
110 #ifdef CONFIG_SYS_MEM_RESERVE_SECURE
111 if (gd->arch.secure_ram & MEM_RESERVE_SECURE_MAINTAINED) {
114 * Only use gd->arch.secure_ram if the address is
115 * recalculated. Align to 4KB for MMU table.
117 /* put page tables in secure ram */
118 index = ARRAY_SIZE(final_map) - 2;
119 gd->arch.tlb_addr = gd->arch.secure_ram & ~0xfff;
120 final_map[index].virt = gd->arch.secure_ram & ~0x3;
121 final_map[index].phys = final_map[index].virt;
122 final_map[index].size = CONFIG_SYS_MEM_RESERVE_SECURE;
123 final_map[index].attrs = PTE_BLOCK_OUTER_SHARE;
124 gd->arch.secure_ram |= MEM_RESERVE_SECURE_SECURED;
125 tlb_addr_save = gd->arch.tlb_addr;
127 /* Use allocated (board_f.c) memory for TLB */
128 tlb_addr_save = gd->arch.tlb_allocated;
129 gd->arch.tlb_addr = tlb_addr_save;
134 /* Reset the fill ptr */
135 gd->arch.tlb_fillptr = tlb_addr_save;
137 /* Create normal system page tables */
140 /* Create emergency page tables */
141 gd->arch.tlb_addr = gd->arch.tlb_fillptr;
142 gd->arch.tlb_emerg = gd->arch.tlb_addr;
144 gd->arch.tlb_addr = tlb_addr_save;
146 /* flush new MMU table */
147 flush_dcache_range(gd->arch.tlb_addr,
148 gd->arch.tlb_addr + gd->arch.tlb_size);
150 /* point TTBR to the new table */
151 set_ttbr_tcr_mair(el, gd->arch.tlb_addr, get_tcr(el, NULL, NULL),
154 * EL3 MMU is already enabled, just need to invalidate TLB to load the
155 * new table. The new table is compatible with the current table, if
156 * MMU somehow walks through the new table before invalidation TLB,
157 * it still works. So we don't need to turn off MMU here.
158 * When EL2 MMU table is created by calling this function, MMU needs
161 set_sctlr(get_sctlr() | CR_M);
164 u64 get_page_table_size(void)
169 int arch_cpu_init(void)
172 __asm_invalidate_dcache_all();
173 __asm_invalidate_tlb_all();
175 set_sctlr(get_sctlr() | CR_C);
185 * This function is called from common/board_r.c.
186 * It recreates MMU table in main memory.
188 void enable_caches(void)
191 __asm_invalidate_tlb_all();
197 u32 initiator_type(u32 cluster, int init_id)
199 struct ccsr_gur *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
200 u32 idx = (cluster >> (init_id * 8)) & TP_CLUSTER_INIT_MASK;
203 type = gur_in32(&gur->tp_ityp[idx]);
204 if (type & TP_ITYP_AV)
210 u32 cpu_pos_mask(void)
212 struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
214 u32 cluster, type, mask = 0;
219 cluster = gur_in32(&gur->tp_cluster[i].lower);
220 for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
221 type = initiator_type(cluster, j);
222 if (type && (TP_ITYP_TYPE(type) == TP_ITYP_TYPE_ARM))
223 mask |= 1 << (i * TP_INIT_PER_CLUSTER + j);
226 } while ((cluster & TP_CLUSTER_EOC) == 0x0);
233 struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
234 int i = 0, count = 0;
235 u32 cluster, type, mask = 0;
240 cluster = gur_in32(&gur->tp_cluster[i].lower);
241 for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
242 type = initiator_type(cluster, j);
244 if (TP_ITYP_TYPE(type) == TP_ITYP_TYPE_ARM)
250 } while ((cluster & TP_CLUSTER_EOC) == 0x0);
256 * Return the number of cores on this SOC.
258 int cpu_numcores(void)
260 return hweight32(cpu_mask());
263 int fsl_qoriq_core_to_cluster(unsigned int core)
265 struct ccsr_gur __iomem *gur =
266 (void __iomem *)(CONFIG_SYS_FSL_GUTS_ADDR);
267 int i = 0, count = 0;
273 cluster = gur_in32(&gur->tp_cluster[i].lower);
274 for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
275 if (initiator_type(cluster, j)) {
282 } while ((cluster & TP_CLUSTER_EOC) == 0x0);
284 return -1; /* cannot identify the cluster */
287 u32 fsl_qoriq_core_to_type(unsigned int core)
289 struct ccsr_gur __iomem *gur =
290 (void __iomem *)(CONFIG_SYS_FSL_GUTS_ADDR);
291 int i = 0, count = 0;
297 cluster = gur_in32(&gur->tp_cluster[i].lower);
298 for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
299 type = initiator_type(cluster, j);
307 } while ((cluster & TP_CLUSTER_EOC) == 0x0);
309 return -1; /* cannot identify the cluster */
312 #ifndef CONFIG_FSL_LSCH3
315 struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
317 return gur_in32(&gur->svr);
321 #ifdef CONFIG_DISPLAY_CPUINFO
322 int print_cpuinfo(void)
324 struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
325 struct sys_info sysinfo;
327 unsigned int i, core;
328 u32 type, rcw, svr = gur_in32(&gur->svr);
333 printf(" %s (0x%x)\n", buf, svr);
334 memset((u8 *)buf, 0x00, ARRAY_SIZE(buf));
335 get_sys_info(&sysinfo);
336 puts("Clock Configuration:");
337 for_each_cpu(i, core, cpu_numcores(), cpu_mask()) {
340 type = TP_ITYP_VER(fsl_qoriq_core_to_type(core));
341 printf("CPU%d(%s):%-4s MHz ", core,
342 type == TY_ITYP_VER_A7 ? "A7 " :
343 (type == TY_ITYP_VER_A53 ? "A53" :
344 (type == TY_ITYP_VER_A57 ? "A57" :
345 (type == TY_ITYP_VER_A72 ? "A72" : " "))),
346 strmhz(buf, sysinfo.freq_processor[core]));
348 printf("\n Bus: %-4s MHz ",
349 strmhz(buf, sysinfo.freq_systembus));
350 printf("DDR: %-4s MT/s", strmhz(buf, sysinfo.freq_ddrbus));
351 #ifdef CONFIG_SYS_DPAA_FMAN
352 printf(" FMAN: %-4s MHz", strmhz(buf, sysinfo.freq_fman[0]));
354 #ifdef CONFIG_SYS_FSL_HAS_DP_DDR
355 if (soc_has_dp_ddr()) {
356 printf(" DP-DDR: %-4s MT/s",
357 strmhz(buf, sysinfo.freq_ddrbus2));
363 * Display the RCW, so that no one gets confused as to what RCW
364 * we're actually using for this boot.
366 puts("Reset Configuration Word (RCW):");
367 for (i = 0; i < ARRAY_SIZE(gur->rcwsr); i++) {
368 rcw = gur_in32(&gur->rcwsr[i]);
370 printf("\n %08x:", i * 4);
371 printf(" %08x", rcw);
379 #ifdef CONFIG_FSL_ESDHC
380 int cpu_mmc_init(bd_t *bis)
382 return fsl_esdhc_mmc_init(bis);
386 int cpu_eth_init(bd_t *bis)
390 #ifdef CONFIG_FSL_MC_ENET
391 error = fsl_mc_ldpaa_init(bis);
393 #ifdef CONFIG_FMAN_ENET
394 fm_standard_init(bis);
399 int arch_early_init_r(void)
403 u32 psci_ver = 0xffffffff;
406 #ifdef CONFIG_SYS_FSL_ERRATUM_A009635
409 #if defined(CONFIG_SYS_FSL_ERRATUM_A009942) && defined(CONFIG_SYS_FSL_DDR)
410 erratum_a009942_check_cpo();
413 #if defined(CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT) && \
414 defined(CONFIG_FSL_PPA_ARMV8_PSCI)
415 /* Check the psci version to determine if the psci is supported */
416 psci_ver = sec_firmware_support_psci_version();
418 if (psci_ver == 0xffffffff) {
419 rv = fsl_layerscape_wake_seconday_cores();
421 printf("Did not wake secondary cores\n");
425 #ifdef CONFIG_SYS_HAS_SERDES
428 #ifdef CONFIG_FMAN_ENET
436 u32 __iomem *cntcr = (u32 *)CONFIG_SYS_FSL_TIMER_ADDR;
437 #ifdef CONFIG_FSL_LSCH3
438 u32 __iomem *cltbenr = (u32 *)CONFIG_SYS_FSL_PMU_CLTBENR;
440 #ifdef CONFIG_LS2080A
441 u32 __iomem *pctbenr = (u32 *)FSL_PMU_PCTBENR_OFFSET;
444 #ifdef COUNTER_FREQUENCY_REAL
445 unsigned long cntfrq = COUNTER_FREQUENCY_REAL;
447 /* Update with accurate clock frequency */
448 asm volatile("msr cntfrq_el0, %0" : : "r" (cntfrq) : "memory");
451 #ifdef CONFIG_FSL_LSCH3
452 /* Enable timebase for all clusters.
453 * It is safe to do so even some clusters are not enabled.
455 out_le32(cltbenr, 0xf);
458 #ifdef CONFIG_LS2080A
460 * In certain Layerscape SoCs, the clock for each core's
461 * has an enable bit in the PMU Physical Core Time Base Enable
462 * Register (PCTBENR), which allows the watchdog to operate.
464 setbits_le32(pctbenr, 0xff);
466 * For LS2080A SoC and its personalities, timer controller
467 * offset is different
469 svr_dev_id = get_svr() >> 16;
470 if (svr_dev_id == SVR_DEV_LS2080A)
471 cntcr = (u32 *)SYS_FSL_LS2080A_LS2085A_TIMER_ADDR;
475 /* Enable clock for timer
476 * This is a global setting.
478 out_le32(cntcr, 0x1);
483 __efi_runtime_data u32 __iomem *rstcr = (u32 *)CONFIG_SYS_FSL_RST_ADDR;
485 void __efi_runtime reset_cpu(ulong addr)
489 /* Raise RESET_REQ_B */
490 val = scfg_in32(rstcr);
492 scfg_out32(rstcr, val);
495 #ifdef CONFIG_EFI_LOADER
497 void __efi_runtime EFIAPI efi_reset_system(
498 enum efi_reset_type reset_type,
499 efi_status_t reset_status,
500 unsigned long data_size, void *reset_data)
502 switch (reset_type) {
507 case EFI_RESET_SHUTDOWN:
508 /* Nothing we can do */
515 void efi_reset_system_init(void)
517 efi_add_runtime_mmio(&rstcr, sizeof(*rstcr));
522 phys_size_t board_reserve_ram_top(phys_size_t ram_size)
524 phys_size_t ram_top = ram_size;
526 #ifdef CONFIG_SYS_MEM_TOP_HIDE
527 #error CONFIG_SYS_MEM_TOP_HIDE not to be used together with this function
530 /* Carve the MC private DRAM block from the end of DRAM */
531 #ifdef CONFIG_FSL_MC_ENET
532 ram_top -= mc_get_dram_block_size();
533 ram_top &= ~(CONFIG_SYS_MC_RSV_MEM_ALIGN - 1);