Rob Herring | 37fc0ed | 2011-10-24 08:50:20 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2010-2011 Calxeda, Inc. |
| 3 | * |
Wolfgang Denk | 1a45966 | 2013-07-08 09:37:19 +0200 | [diff] [blame] | 4 | * SPDX-License-Identifier: GPL-2.0+ |
Rob Herring | 37fc0ed | 2011-10-24 08:50:20 +0000 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | #include <common.h> |
| 8 | #include <ahci.h> |
Rob Herring | bd0d90e | 2012-02-21 12:52:26 +0000 | [diff] [blame] | 9 | #include <netdev.h> |
Rob Herring | 37fc0ed | 2011-10-24 08:50:20 +0000 | [diff] [blame] | 10 | #include <scsi.h> |
| 11 | |
Alexey Brodkin | 1ace402 | 2014-02-26 17:47:58 +0400 | [diff] [blame] | 12 | #include <linux/sizes.h> |
Rob Herring | 877012d | 2012-02-01 16:57:54 +0000 | [diff] [blame] | 13 | #include <asm/io.h> |
Rob Herring | 37fc0ed | 2011-10-24 08:50:20 +0000 | [diff] [blame] | 14 | |
Rob Herring | 76c3999 | 2013-06-12 22:24:52 -0500 | [diff] [blame] | 15 | #define HB_AHCI_BASE 0xffe08000 |
| 16 | |
Rob Herring | 083ffd6 | 2015-06-05 00:58:42 +0100 | [diff] [blame] | 17 | #define HB_SCU_A9_PWR_STATUS 0xfff10008 |
Rob Herring | 0c34e69 | 2012-02-01 16:57:55 +0000 | [diff] [blame] | 18 | #define HB_SREG_A9_PWR_REQ 0xfff3cf00 |
Rob Herring | 4a3ea21 | 2012-02-01 16:57:57 +0000 | [diff] [blame] | 19 | #define HB_SREG_A9_BOOT_SRC_STAT 0xfff3cf04 |
Rob Herring | 76c3999 | 2013-06-12 22:24:52 -0500 | [diff] [blame] | 20 | #define HB_SREG_A9_PWRDOM_STAT 0xfff3cf20 |
Mark Langsdorf | f897332 | 2015-06-05 00:58:43 +0100 | [diff] [blame] | 21 | #define HB_SREG_A15_PWR_CTRL 0xfff3c200 |
Rob Herring | 76c3999 | 2013-06-12 22:24:52 -0500 | [diff] [blame] | 22 | |
Rob Herring | 0c34e69 | 2012-02-01 16:57:55 +0000 | [diff] [blame] | 23 | #define HB_PWR_SUSPEND 0 |
| 24 | #define HB_PWR_SOFT_RESET 1 |
| 25 | #define HB_PWR_HARD_RESET 2 |
| 26 | #define HB_PWR_SHUTDOWN 3 |
| 27 | |
Rob Herring | 76c3999 | 2013-06-12 22:24:52 -0500 | [diff] [blame] | 28 | #define PWRDOM_STAT_SATA 0x80000000 |
| 29 | #define PWRDOM_STAT_PCI 0x40000000 |
| 30 | #define PWRDOM_STAT_EMMC 0x20000000 |
| 31 | |
Rob Herring | 083ffd6 | 2015-06-05 00:58:42 +0100 | [diff] [blame] | 32 | #define HB_SCU_A9_PWR_NORMAL 0 |
| 33 | #define HB_SCU_A9_PWR_DORMANT 2 |
| 34 | #define HB_SCU_A9_PWR_OFF 3 |
| 35 | |
Rob Herring | 37fc0ed | 2011-10-24 08:50:20 +0000 | [diff] [blame] | 36 | DECLARE_GLOBAL_DATA_PTR; |
| 37 | |
Mark Langsdorf | ef51c41 | 2015-06-05 00:58:49 +0100 | [diff] [blame] | 38 | void cphy_disable_overrides(void); |
| 39 | |
Rob Herring | 37fc0ed | 2011-10-24 08:50:20 +0000 | [diff] [blame] | 40 | /* |
| 41 | * Miscellaneous platform dependent initialisations |
| 42 | */ |
| 43 | int board_init(void) |
| 44 | { |
| 45 | icache_enable(); |
| 46 | |
| 47 | return 0; |
| 48 | } |
| 49 | |
Rob Herring | 9a42098 | 2011-12-15 11:15:50 +0000 | [diff] [blame] | 50 | /* We know all the init functions have been run now */ |
| 51 | int board_eth_init(bd_t *bis) |
| 52 | { |
| 53 | int rc = 0; |
| 54 | |
| 55 | #ifdef CONFIG_CALXEDA_XGMAC |
| 56 | rc += calxedaxgmac_initialize(0, 0xfff50000); |
| 57 | rc += calxedaxgmac_initialize(1, 0xfff51000); |
| 58 | #endif |
| 59 | return rc; |
| 60 | } |
| 61 | |
Ian Campbell | b946322 | 2014-03-07 01:20:57 +0000 | [diff] [blame] | 62 | #ifdef CONFIG_SCSI_AHCI_PLAT |
| 63 | void scsi_init(void) |
Rob Herring | 37fc0ed | 2011-10-24 08:50:20 +0000 | [diff] [blame] | 64 | { |
Rob Herring | 76c3999 | 2013-06-12 22:24:52 -0500 | [diff] [blame] | 65 | u32 reg = readl(HB_SREG_A9_PWRDOM_STAT); |
Rob Herring | 4a3ea21 | 2012-02-01 16:57:57 +0000 | [diff] [blame] | 66 | |
Mark Langsdorf | ef51c41 | 2015-06-05 00:58:49 +0100 | [diff] [blame] | 67 | cphy_disable_overrides(); |
Rob Herring | 76c3999 | 2013-06-12 22:24:52 -0500 | [diff] [blame] | 68 | if (reg & PWRDOM_STAT_SATA) { |
Scott Wood | 9efaca3 | 2015-04-17 09:19:01 -0500 | [diff] [blame] | 69 | ahci_init((void __iomem *)HB_AHCI_BASE); |
Rob Herring | 76c3999 | 2013-06-12 22:24:52 -0500 | [diff] [blame] | 70 | scsi_scan(1); |
| 71 | } |
Ian Campbell | b946322 | 2014-03-07 01:20:57 +0000 | [diff] [blame] | 72 | } |
| 73 | #endif |
| 74 | |
| 75 | #ifdef CONFIG_MISC_INIT_R |
| 76 | int misc_init_r(void) |
| 77 | { |
| 78 | char envbuffer[16]; |
| 79 | u32 boot_choice; |
Rob Herring | 4a3ea21 | 2012-02-01 16:57:57 +0000 | [diff] [blame] | 80 | |
| 81 | boot_choice = readl(HB_SREG_A9_BOOT_SRC_STAT) & 0xff; |
| 82 | sprintf(envbuffer, "bootcmd%d", boot_choice); |
| 83 | if (getenv(envbuffer)) { |
| 84 | sprintf(envbuffer, "run bootcmd%d", boot_choice); |
| 85 | setenv("bootcmd", envbuffer); |
| 86 | } else |
| 87 | setenv("bootcmd", ""); |
| 88 | |
Rob Herring | 37fc0ed | 2011-10-24 08:50:20 +0000 | [diff] [blame] | 89 | return 0; |
| 90 | } |
Rob Herring | 9539502 | 2013-06-12 22:24:53 -0500 | [diff] [blame] | 91 | #endif |
Rob Herring | 37fc0ed | 2011-10-24 08:50:20 +0000 | [diff] [blame] | 92 | |
| 93 | int dram_init(void) |
| 94 | { |
| 95 | gd->ram_size = SZ_512M; |
| 96 | return 0; |
| 97 | } |
| 98 | |
| 99 | void dram_init_banksize(void) |
| 100 | { |
| 101 | gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE; |
| 102 | gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE; |
| 103 | } |
| 104 | |
Rob Herring | 76c3999 | 2013-06-12 22:24:52 -0500 | [diff] [blame] | 105 | #if defined(CONFIG_OF_BOARD_SETUP) |
Simon Glass | e895a4b | 2014-10-23 18:58:47 -0600 | [diff] [blame] | 106 | int ft_board_setup(void *fdt, bd_t *bd) |
Rob Herring | 76c3999 | 2013-06-12 22:24:52 -0500 | [diff] [blame] | 107 | { |
| 108 | static const char disabled[] = "disabled"; |
| 109 | u32 reg = readl(HB_SREG_A9_PWRDOM_STAT); |
| 110 | |
| 111 | if (!(reg & PWRDOM_STAT_SATA)) |
| 112 | do_fixup_by_compat(fdt, "calxeda,hb-ahci", "status", |
| 113 | disabled, sizeof(disabled), 1); |
| 114 | |
| 115 | if (!(reg & PWRDOM_STAT_EMMC)) |
| 116 | do_fixup_by_compat(fdt, "calxeda,hb-sdhci", "status", |
| 117 | disabled, sizeof(disabled), 1); |
Simon Glass | e895a4b | 2014-10-23 18:58:47 -0600 | [diff] [blame] | 118 | |
| 119 | return 0; |
Rob Herring | 76c3999 | 2013-06-12 22:24:52 -0500 | [diff] [blame] | 120 | } |
| 121 | #endif |
| 122 | |
Mark Langsdorf | f897332 | 2015-06-05 00:58:43 +0100 | [diff] [blame] | 123 | static int is_highbank(void) |
| 124 | { |
| 125 | uint32_t midr; |
| 126 | |
| 127 | asm volatile ("mrc p15, 0, %0, c0, c0, 0\n" : "=r"(midr)); |
| 128 | |
| 129 | return (midr & 0xfff0) == 0xc090; |
| 130 | } |
| 131 | |
Rob Herring | 37fc0ed | 2011-10-24 08:50:20 +0000 | [diff] [blame] | 132 | void reset_cpu(ulong addr) |
| 133 | { |
Rob Herring | 0c34e69 | 2012-02-01 16:57:55 +0000 | [diff] [blame] | 134 | writel(HB_PWR_HARD_RESET, HB_SREG_A9_PWR_REQ); |
Mark Langsdorf | f897332 | 2015-06-05 00:58:43 +0100 | [diff] [blame] | 135 | if (is_highbank()) |
| 136 | writeb(HB_SCU_A9_PWR_OFF, HB_SCU_A9_PWR_STATUS); |
| 137 | else |
| 138 | writel(0x1, HB_SREG_A15_PWR_CTRL); |
Rob Herring | 5bedf88 | 2012-12-02 17:06:22 +0000 | [diff] [blame] | 139 | |
| 140 | wfi(); |
Rob Herring | 37fc0ed | 2011-10-24 08:50:20 +0000 | [diff] [blame] | 141 | } |
Mark Langsdorf | ef51c41 | 2015-06-05 00:58:49 +0100 | [diff] [blame] | 142 | |
| 143 | /* |
| 144 | * turn off the override before transferring control to Linux, since Linux |
| 145 | * may not support spread spectrum. |
| 146 | */ |
| 147 | void arch_preboot_os(void) |
| 148 | { |
| 149 | cphy_disable_overrides(); |
| 150 | } |