diff options
Diffstat (limited to 'board/highbank/highbank.c')
| -rw-r--r-- | board/highbank/highbank.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/board/highbank/highbank.c b/board/highbank/highbank.c index ba1beb5..469ee8e 100644 --- a/board/highbank/highbank.c +++ b/board/highbank/highbank.c @@ -14,9 +14,11 @@ #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 @@ -27,8 +29,14 @@ #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 */ @@ -56,6 +64,7 @@ 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); @@ -111,9 +120,31 @@ int ft_board_setup(void *fdt, bd_t *bd) } #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(); +} |