1 /* 2 * (C) Copyright 2002 3 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> 4 * Marius Groeger <mgroeger@sysgo.de> 5 * 6 * (C) Copyright 2002 7 * David Mueller, ELSOFT AG, <d.mueller@elsoft.ch> 8 * 9 * (C) Copyright 2003 10 * Texas Instruments, <www.ti.com> 11 * Kshitij Gupta <Kshitij@ti.com> 12 * 13 * (C) Copyright 2004 14 * ARM Ltd. 15 * Philippe Robin, <philippe.robin@arm.com> 16 * 17 * SPDX-License-Identifier: GPL-2.0+ 18 */ 19 #include <common.h> 20 #include <malloc.h> 21 #include <errno.h> 22 #include <netdev.h> 23 #include <asm/io.h> 24 #include <asm/arch/systimer.h> 25 #include <asm/arch/sysctrl.h> 26 #include <asm/arch/wdt.h> 27 #include "../drivers/mmc/arm_pl180_mmci.h" 28 29 static struct systimer *systimer_base = (struct systimer *)V2M_TIMER01; 30 static struct sysctrl *sysctrl_base = (struct sysctrl *)SCTL_BASE; 31 32 static void flash__init(void); 33 static void vexpress_timer_init(void); 34 DECLARE_GLOBAL_DATA_PTR; 35 36 #if defined(CONFIG_SHOW_BOOT_PROGRESS) 37 void show_boot_progress(int progress) 38 { 39 printf("Boot reached stage %d\n", progress); 40 } 41 #endif 42 43 static inline void delay(ulong loops) 44 { 45 __asm__ volatile ("1:\n" 46 "subs %0, %1, #1\n" 47 "bne 1b" : "=r" (loops) : "0" (loops)); 48 } 49 50 int board_init(void) 51 { 52 gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR; 53 gd->bd->bi_arch_number = MACH_TYPE_VEXPRESS; 54 gd->flags = 0; 55 56 icache_enable(); 57 flash__init(); 58 vexpress_timer_init(); 59 60 return 0; 61 } 62 63 int board_eth_init(bd_t *bis) 64 { 65 int rc = 0; 66 #ifdef CONFIG_SMC911X 67 rc = smc911x_initialize(0, CONFIG_SMC911X_BASE); 68 #endif 69 return rc; 70 } 71 72 int cpu_mmc_init(bd_t *bis) 73 { 74 int rc = 0; 75 (void) bis; 76 #ifdef CONFIG_ARM_PL180_MMCI 77 struct pl180_mmc_host *host; 78 79 host = malloc(sizeof(struct pl180_mmc_host)); 80 if (!host) 81 return -ENOMEM; 82 memset(host, 0, sizeof(*host)); 83 84 strcpy(host->name, "MMC"); 85 host->base = (struct sdi_registers *)CONFIG_ARM_PL180_MMCI_BASE; 86 host->pwr_init = INIT_PWR; 87 host->clkdiv_init = SDI_CLKCR_CLKDIV_INIT_V1 | SDI_CLKCR_CLKEN; 88 host->voltages = VOLTAGE_WINDOW_MMC; 89 host->caps = 0; 90 host->clock_in = ARM_MCLK; 91 host->clock_min = ARM_MCLK / (2 * (SDI_CLKCR_CLKDIV_INIT_V1 + 1)); 92 host->clock_max = CONFIG_ARM_PL180_MMCI_CLOCK_FREQ; 93 rc = arm_pl180_mmci_init(host); 94 #endif 95 return rc; 96 } 97 98 static void flash__init(void) 99 { 100 /* Setup the sytem control register to allow writing to flash */ 101 writel(readl(&sysctrl_base->scflashctrl) | VEXPRESS_FLASHPROG_FLVPPEN, 102 &sysctrl_base->scflashctrl); 103 } 104 105 int dram_init(void) 106 { 107 gd->ram_size = 108 get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, PHYS_SDRAM_1_SIZE); 109 return 0; 110 } 111 112 void dram_init_banksize(void) 113 { 114 gd->bd->bi_dram[0].start = PHYS_SDRAM_1; 115 gd->bd->bi_dram[0].size = 116 get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE); 117 gd->bd->bi_dram[1].start = PHYS_SDRAM_2; 118 gd->bd->bi_dram[1].size = 119 get_ram_size((long *)PHYS_SDRAM_2, PHYS_SDRAM_2_SIZE); 120 } 121 122 int timer_init(void) 123 { 124 return 0; 125 } 126 127 /* 128 * Start timer: 129 * Setup a 32 bit timer, running at 1KHz 130 * Versatile Express Motherboard provides 1 MHz timer 131 */ 132 static void vexpress_timer_init(void) 133 { 134 /* 135 * Set clock frequency in system controller: 136 * VEXPRESS_REFCLK is 32KHz 137 * VEXPRESS_TIMCLK is 1MHz 138 */ 139 writel(SP810_TIMER0_ENSEL | SP810_TIMER1_ENSEL | 140 SP810_TIMER2_ENSEL | SP810_TIMER3_ENSEL | 141 readl(&sysctrl_base->scctrl), &sysctrl_base->scctrl); 142 143 /* 144 * Set Timer0 to be: 145 * Enabled, free running, no interrupt, 32-bit, wrapping 146 */ 147 writel(SYSTIMER_RELOAD, &systimer_base->timer0load); 148 writel(SYSTIMER_RELOAD, &systimer_base->timer0value); 149 writel(SYSTIMER_EN | SYSTIMER_32BIT | 150 readl(&systimer_base->timer0control), 151 &systimer_base->timer0control); 152 } 153 154 int v2m_cfg_write(u32 devfn, u32 data) 155 { 156 /* Configuration interface broken? */ 157 u32 val; 158 159 devfn |= SYS_CFG_START | SYS_CFG_WRITE; 160 161 val = readl(V2M_SYS_CFGSTAT); 162 writel(val & ~SYS_CFG_COMPLETE, V2M_SYS_CFGSTAT); 163 164 writel(data, V2M_SYS_CFGDATA); 165 writel(devfn, V2M_SYS_CFGCTRL); 166 167 do { 168 val = readl(V2M_SYS_CFGSTAT); 169 } while (val == 0); 170 171 return !!(val & SYS_CFG_ERR); 172 } 173 174 /* Use the ARM Watchdog System to cause reset */ 175 void reset_cpu(ulong addr) 176 { 177 if (v2m_cfg_write(SYS_CFG_REBOOT | SYS_CFG_SITE_MB, 0)) 178 printf("Unable to reboot\n"); 179 } 180 181 void lowlevel_init(void) 182 { 183 } 184 185 ulong get_board_rev(void){ 186 return readl((u32 *)SYS_ID); 187 } 188 189 #if defined(CONFIG_ARMV7_NONSEC) || defined(CONFIG_ARMV7_VIRT) 190 /* Setting the address at which secondary cores start from. 191 * Versatile Express uses one address for all cores, so ignore corenr 192 */ 193 void smp_set_core_boot_addr(unsigned long addr, int corenr) 194 { 195 /* The SYSFLAGS register on VExpress needs to be cleared first 196 * by writing to the next address, since any writes to the address 197 * at offset 0 will only be ORed in 198 */ 199 writel(~0, CONFIG_SYSFLAGS_ADDR + 4); 200 writel(addr, CONFIG_SYSFLAGS_ADDR); 201 } 202 #endif 203