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/*
* Copyright 2010-2011 Calxeda, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <ahci.h>
#include <netdev.h>
#include <scsi.h>
#include <linux/sizes.h>
#include <asm/io.h>
#define HB_AHCI_BASE 0xffe08000
#define HB_SCU_A9_PWR_STATUS 0xfff10008
#define HB_SREG_A9_PWR_REQ 0xfff3cf00
#define HB_SREG_A9_BOOT_SRC_STAT 0xfff3cf04
#define HB_SREG_A9_PWRDOM_STAT 0xfff3cf20
#define HB_SREG_A15_PWR_CTRL 0xfff3c200
#define HB_PWR_SUSPEND 0
#define HB_PWR_SOFT_RESET 1
#define HB_PWR_HARD_RESET 2
#define HB_PWR_SHUTDOWN 3
#define PWRDOM_STAT_SATA 0x80000000
#define PWRDOM_STAT_PCI 0x40000000
#define PWRDOM_STAT_EMMC 0x20000000
#define HB_SCU_A9_PWR_NORMAL 0
#define HB_SCU_A9_PWR_DORMANT 2
#define HB_SCU_A9_PWR_OFF 3
DECLARE_GLOBAL_DATA_PTR;
void cphy_disable_overrides(void);
/*
* Miscellaneous platform dependent initialisations
*/
int board_init(void)
{
icache_enable();
return 0;
}
/* We know all the init functions have been run now */
int board_eth_init(bd_t *bis)
{
int rc = 0;
#ifdef CONFIG_CALXEDA_XGMAC
rc += calxedaxgmac_initialize(0, 0xfff50000);
rc += calxedaxgmac_initialize(1, 0xfff51000);
#endif
return rc;
}
#ifdef CONFIG_SCSI_AHCI_PLAT
void scsi_init(void)
{
u32 reg = readl(HB_SREG_A9_PWRDOM_STAT);
cphy_disable_overrides();
if (reg & PWRDOM_STAT_SATA) {
ahci_init((void __iomem *)HB_AHCI_BASE);
scsi_scan(1);
}
}
#endif
#ifdef CONFIG_MISC_INIT_R
int misc_init_r(void)
{
char envbuffer[16];
u32 boot_choice;
boot_choice = readl(HB_SREG_A9_BOOT_SRC_STAT) & 0xff;
sprintf(envbuffer, "bootcmd%d", boot_choice);
if (getenv(envbuffer)) {
sprintf(envbuffer, "run bootcmd%d", boot_choice);
setenv("bootcmd", envbuffer);
} else
setenv("bootcmd", "");
return 0;
}
#endif
int dram_init(void)
{
gd->ram_size = SZ_512M;
return 0;
}
#if defined(CONFIG_OF_BOARD_SETUP)
int ft_board_setup(void *fdt, bd_t *bd)
{
static const char disabled[] = "disabled";
u32 reg = readl(HB_SREG_A9_PWRDOM_STAT);
if (!(reg & PWRDOM_STAT_SATA))
do_fixup_by_compat(fdt, "calxeda,hb-ahci", "status",
disabled, sizeof(disabled), 1);
if (!(reg & PWRDOM_STAT_EMMC))
do_fixup_by_compat(fdt, "calxeda,hb-sdhci", "status",
disabled, sizeof(disabled), 1);
return 0;
}
#endif
static int is_highbank(void)
{
uint32_t midr;
asm volatile ("mrc p15, 0, %0, c0, c0, 0\n" : "=r"(midr));
return (midr & 0xfff0) == 0xc090;
}
void reset_cpu(ulong addr)
{
writel(HB_PWR_HARD_RESET, HB_SREG_A9_PWR_REQ);
if (is_highbank())
writeb(HB_SCU_A9_PWR_OFF, HB_SCU_A9_PWR_STATUS);
else
writel(0x1, HB_SREG_A15_PWR_CTRL);
wfi();
}
/*
* turn off the override before transferring control to Linux, since Linux
* may not support spread spectrum.
*/
void arch_preboot_os(void)
{
cphy_disable_overrides();
}
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