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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* (C) Copyright 2002
* David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
*
* (C) Copyright 2003
* Texas Instruments, <www.ti.com>
* Kshitij Gupta <Kshitij@ti.com>
*
* (C) Copyright 2004
* ARM Ltd.
* Philippe Robin, <philippe.robin@arm.com>
*/
#include <common.h>
#include <bootstage.h>
#include <cpu_func.h>
#include <init.h>
#include <malloc.h>
#include <errno.h>
#include <net.h>
#include <netdev.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <asm/mach-types.h>
#include <asm/arch/systimer.h>
#include <asm/arch/sysctrl.h>
#include <asm/arch/wdt.h>
static struct systimer *systimer_base = (struct systimer *)V2M_TIMER01;
static struct sysctrl *sysctrl_base = (struct sysctrl *)SCTL_BASE;
static void flash__init(void);
static void vexpress_timer_init(void);
DECLARE_GLOBAL_DATA_PTR;
#if defined(CONFIG_SHOW_BOOT_PROGRESS)
void show_boot_progress(int progress)
{
printf("Boot reached stage %d\n", progress);
}
#endif
static inline void delay(ulong loops)
{
__asm__ volatile ("1:\n"
"subs %0, %1, #1\n"
"bne 1b" : "=r" (loops) : "0" (loops));
}
int board_init(void)
{
gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
gd->bd->bi_arch_number = MACH_TYPE_VEXPRESS;
icache_enable();
flash__init();
vexpress_timer_init();
return 0;
}
static void flash__init(void)
{
/* Setup the sytem control register to allow writing to flash */
writel(readl(&sysctrl_base->scflashctrl) | VEXPRESS_FLASHPROG_FLVPPEN,
&sysctrl_base->scflashctrl);
}
int dram_init(void)
{
gd->ram_size =
get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, PHYS_SDRAM_1_SIZE);
return 0;
}
int dram_init_banksize(void)
{
gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
gd->bd->bi_dram[0].size =
get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
gd->bd->bi_dram[1].size =
get_ram_size((long *)PHYS_SDRAM_2, PHYS_SDRAM_2_SIZE);
return 0;
}
/*
* Start timer:
* Setup a 32 bit timer, running at 1KHz
* Versatile Express Motherboard provides 1 MHz timer
*/
static void vexpress_timer_init(void)
{
/*
* Set clock frequency in system controller:
* VEXPRESS_REFCLK is 32KHz
* VEXPRESS_TIMCLK is 1MHz
*/
writel(SP810_TIMER0_ENSEL | SP810_TIMER1_ENSEL |
SP810_TIMER2_ENSEL | SP810_TIMER3_ENSEL |
readl(&sysctrl_base->scctrl), &sysctrl_base->scctrl);
/*
* Set Timer0 to be:
* Enabled, free running, no interrupt, 32-bit, wrapping
*/
writel(SYSTIMER_RELOAD, &systimer_base->timer0load);
writel(SYSTIMER_RELOAD, &systimer_base->timer0value);
writel(SYSTIMER_EN | SYSTIMER_32BIT |
readl(&systimer_base->timer0control),
&systimer_base->timer0control);
}
int v2m_cfg_write(u32 devfn, u32 data)
{
/* Configuration interface broken? */
u32 val;
devfn |= SYS_CFG_START | SYS_CFG_WRITE;
val = readl(V2M_SYS_CFGSTAT);
writel(val & ~SYS_CFG_COMPLETE, V2M_SYS_CFGSTAT);
writel(data, V2M_SYS_CFGDATA);
writel(devfn, V2M_SYS_CFGCTRL);
do {
val = readl(V2M_SYS_CFGSTAT);
} while (val == 0);
return !!(val & SYS_CFG_ERR);
}
/* Use the ARM Watchdog System to cause reset */
void reset_cpu(void)
{
if (v2m_cfg_write(SYS_CFG_REBOOT | SYS_CFG_SITE_MB, 0))
printf("Unable to reboot\n");
}
void lowlevel_init(void)
{
}
ulong get_board_rev(void){
return readl((u32 *)SYS_ID);
}
#ifdef CONFIG_ARMV7_NONSEC
/* Setting the address at which secondary cores start from.
* Versatile Express uses one address for all cores, so ignore corenr
*/
void smp_set_core_boot_addr(unsigned long addr, int corenr)
{
/* The SYSFLAGS register on VExpress needs to be cleared first
* by writing to the next address, since any writes to the address
* at offset 0 will only be ORed in
*/
writel(~0, CONFIG_SYSFLAGS_ADDR + 4);
writel(addr, CONFIG_SYSFLAGS_ADDR);
}
#endif
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