projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 5f6108bb | 1 | /* |
| 2 | * r8a7791 Power management support | |
| 3 | * | |
| 4 | * Copyright (C) 2014 Renesas Electronics Corporation | |
| 5 | * Copyright (C) 2011 Renesas Solutions Corp. | |
| 6 | * Copyright (C) 2011 Magnus Damm | |
| 7 | * | |
| 8 | * This file is subject to the terms and conditions of the GNU General Public | |
| 9 | * License. See the file "COPYING" in the main directory of this archive | |
| 10 | * for more details. | |
| 11 | */ | |
| 12 | ||
| 5f6108bb | 13 | #include <linux/kernel.h> |
| 8e26118d | 14 | #include <linux/smp.h> |
| 5201b5a7 | 15 | #include <asm/io.h> |
| 8e26118d | 16 | #include "common.h" |
| 5f6108bb | 17 | #include "pm-rcar.h" |
| 5201b5a7 | 18 | #include "r8a7791.h" |
| 5f6108bb | 19 | |
| 8e26118d MD |
20 | #define RST 0xe6160000 |
| 21 | #define CA15BAR 0x0020 | |
| 22 | #define CA15RESCNT 0x0040 | |
| 23 | #define RAM 0xe6300000 | |
| 24 | ||
| 5f6108bb | 25 | /* SYSC */ |
| 26 | #define SYSCIER 0x0c | |
| 27 | #define SYSCIMR 0x10 | |
| 28 | ||
| 29 | #if defined(CONFIG_SMP) | |
| 30 | ||
| 31 | static void __init r8a7791_sysc_init(void) | |
| 32 | { | |
| 33 | void __iomem *base = rcar_sysc_init(0xe6180000); | |
| 34 | ||
| 35 | /* enable all interrupt sources, but do not use interrupt handler */ | |
| 36 | iowrite32(0x0131000e, base + SYSCIER); | |
| 37 | iowrite32(0, base + SYSCIMR); | |
| 38 | } | |
| 39 | ||
| 40 | #else /* CONFIG_SMP */ | |
| 41 | ||
| 42 | static inline void r8a7791_sysc_init(void) {} | |
| 43 | ||
| 44 | #endif /* CONFIG_SMP */ | |
| 45 | ||
| 46 | void __init r8a7791_pm_init(void) | |
| 47 | { | |
| 8e26118d MD |
48 | void __iomem *p; |
| 49 | u32 bar; | |
| 5f6108bb | 50 | static int once; |
| 51 | ||
| 52 | if (once++) | |
| 53 | return; | |
| 54 | ||
| 8e26118d MD |
55 | /* RAM for jump stub, because BAR requires 256KB aligned address */ |
| 56 | p = ioremap_nocache(RAM, shmobile_boot_size); | |
| 57 | memcpy_toio(p, shmobile_boot_vector, shmobile_boot_size); | |
| 58 | iounmap(p); | |
| 59 | ||
| 60 | /* setup reset vectors */ | |
| 61 | p = ioremap_nocache(RST, 0x63); | |
| 62 | bar = (RAM >> 8) & 0xfffffc00; | |
| 63 | writel_relaxed(bar, p + CA15BAR); | |
| 64 | writel_relaxed(bar | 0x10, p + CA15BAR); | |
| 65 | ||
| 66 | /* enable clocks to all CPUs */ | |
| 67 | writel_relaxed((readl_relaxed(p + CA15RESCNT) & ~0x0f) | 0xa5a50000, | |
| 68 | p + CA15RESCNT); | |
| 69 | iounmap(p); | |
| 70 | ||
| 5f6108bb | 71 | r8a7791_sysc_init(); |
| bfe4cfa8 | 72 | shmobile_smp_apmu_suspend_init(); |
| 5f6108bb | 73 | } |