1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved. 4 */ 5 6 #include <common.h> 7 #include <dwmmc.h> 8 #include <malloc.h> 9 #include <asm/arcregs.h> 10 #include "axs10x.h" 11 12 DECLARE_GLOBAL_DATA_PTR; 13 14 int board_mmc_init(bd_t *bis) 15 { 16 struct dwmci_host *host = NULL; 17 18 host = malloc(sizeof(struct dwmci_host)); 19 if (!host) { 20 printf("dwmci_host malloc fail!\n"); 21 return 1; 22 } 23 24 memset(host, 0, sizeof(struct dwmci_host)); 25 host->name = "Synopsys Mobile storage"; 26 host->ioaddr = (void *)ARC_DWMMC_BASE; 27 host->buswidth = 4; 28 host->dev_index = 0; 29 host->bus_hz = 50000000; 30 31 add_dwmci(host, host->bus_hz / 2, 400000); 32 33 return 0; 34 } 35 36 int board_mmc_getcd(struct mmc *mmc) 37 { 38 struct dwmci_host *host = mmc->priv; 39 40 return !(dwmci_readl(host, DWMCI_CDETECT) & 1); 41 } 42 43 #define AXS_MB_CREG 0xE0011000 44 45 int board_early_init_f(void) 46 { 47 if (readl((void __iomem *)AXS_MB_CREG + 0x234) & (1 << 28)) 48 gd->board_type = AXS_MB_V3; 49 else 50 gd->board_type = AXS_MB_V2; 51 52 return 0; 53 } 54 55 #ifdef CONFIG_ISA_ARCV2 56 57 void board_jump_and_run(ulong entry, int zero, int arch, uint params) 58 { 59 void (*kernel_entry)(int zero, int arch, uint params); 60 61 kernel_entry = (void (*)(int, int, uint))entry; 62 63 smp_set_core_boot_addr(entry, -1); 64 smp_kick_all_cpus(); 65 kernel_entry(zero, arch, params); 66 } 67 68 #define RESET_VECTOR_ADDR 0x0 69 70 void smp_set_core_boot_addr(unsigned long addr, int corenr) 71 { 72 /* All cores have reset vector pointing to 0 */ 73 writel(addr, (void __iomem *)RESET_VECTOR_ADDR); 74 75 /* Make sure other cores see written value in memory */ 76 flush_dcache_all(); 77 } 78 79 void smp_kick_all_cpus(void) 80 { 81 /* CPU start CREG */ 82 #define AXC003_CREG_CPU_START 0xF0001400 83 /* Bits positions in CPU start CREG */ 84 #define BITS_START 0 85 #define BITS_START_MODE 4 86 #define BITS_CORE_SEL 9 87 88 /* 89 * In axs103 v1.1 START bits semantics has changed quite a bit. 90 * We used to have a generic START bit for all cores selected by CORE_SEL mask. 91 * But now we don't touch CORE_SEL at all because we have a dedicated START bit 92 * for each core: 93 * bit 0: Core 0 (master) 94 * bit 1: Core 1 (slave) 95 */ 96 #define BITS_START_CORE1 1 97 98 #define ARCVER_HS38_3_0 0x53 99 100 int core_family = read_aux_reg(ARC_AUX_IDENTITY) & 0xff; 101 int cmd = readl((void __iomem *)AXC003_CREG_CPU_START); 102 103 if (core_family < ARCVER_HS38_3_0) { 104 cmd |= (1 << BITS_CORE_SEL) | (1 << BITS_START); 105 cmd &= ~(1 << BITS_START_MODE); 106 } else { 107 cmd |= (1 << BITS_START_CORE1); 108 } 109 writel(cmd, (void __iomem *)AXC003_CREG_CPU_START); 110 } 111 #endif 112 113 int checkboard(void) 114 { 115 printf("Board: ARC Software Development Platform AXS%s\n", 116 is_isa_arcv2() ? "103" : "101"); 117 118 return 0; 119 }; 120