| Masahiro Yamada | 6f11cde | 2017-01-15 14:59:05 +0900 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2011-2015 Panasonic Corporation |
| 3 | * Copyright (C) 2015-2017 Socionext Inc. |
| 4 | * Author: Masahiro Yamada <yamada.masahiro@socionext.com> |
| 5 | * |
| 6 | * SPDX-License-Identifier: GPL-2.0+ |
| 7 | */ |
| 8 | |
| 9 | #include <linux/io.h> |
| 10 | |
| 11 | #include "../init.h" |
| 12 | #include "sbc-regs.h" |
| 13 | |
| 14 | #define SBCTRL0_ADMULTIPLX_PERI_VALUE 0x33120000 |
| 15 | #define SBCTRL1_ADMULTIPLX_PERI_VALUE 0x03005500 |
| 16 | #define SBCTRL2_ADMULTIPLX_PERI_VALUE 0x14000020 |
| 17 | |
| 18 | #define SBCTRL0_ADMULTIPLX_MEM_VALUE 0x33120000 |
| 19 | #define SBCTRL1_ADMULTIPLX_MEM_VALUE 0x03005500 |
| 20 | #define SBCTRL2_ADMULTIPLX_MEM_VALUE 0x14000010 |
| 21 | |
| 22 | /* slower but LED works */ |
| 23 | #define SBCTRL0_SAVEPIN_PERI_VALUE 0x55450000 |
| 24 | #define SBCTRL1_SAVEPIN_PERI_VALUE 0x07168d00 |
| 25 | #define SBCTRL2_SAVEPIN_PERI_VALUE 0x34000009 |
| 26 | #define SBCTRL4_SAVEPIN_PERI_VALUE 0x02110110 |
| 27 | |
| 28 | /* faster but LED does not work */ |
| 29 | #define SBCTRL0_SAVEPIN_MEM_VALUE 0x55450000 |
| 30 | #define SBCTRL1_SAVEPIN_MEM_VALUE 0x06057700 |
| 31 | /* NOR flash needs more wait counts than SRAM */ |
| 32 | #define SBCTRL2_SAVEPIN_MEM_VALUE 0x34000009 |
| 33 | #define SBCTRL4_SAVEPIN_MEM_VALUE 0x02110210 |
| 34 | |
| 35 | static void __uniphier_sbc_init(int savepin) |
| 36 | { |
| 37 | /* |
| 38 | * Only CS1 is connected to support card. |
| 39 | * BKSZ[1:0] should be set to "01". |
| 40 | */ |
| 41 | if (savepin) { |
| 42 | writel(SBCTRL0_SAVEPIN_PERI_VALUE, SBCTRL10); |
| 43 | writel(SBCTRL1_SAVEPIN_PERI_VALUE, SBCTRL11); |
| 44 | writel(SBCTRL2_SAVEPIN_PERI_VALUE, SBCTRL12); |
| 45 | writel(SBCTRL4_SAVEPIN_PERI_VALUE, SBCTRL14); |
| 46 | } else { |
| 47 | writel(SBCTRL0_ADMULTIPLX_MEM_VALUE, SBCTRL10); |
| 48 | writel(SBCTRL1_ADMULTIPLX_MEM_VALUE, SBCTRL11); |
| 49 | writel(SBCTRL2_ADMULTIPLX_MEM_VALUE, SBCTRL12); |
| 50 | } |
| 51 | |
| 52 | if (boot_is_swapped()) { |
| 53 | /* |
| 54 | * Boot Swap On: boot from external NOR/SRAM |
| 55 | * 0x42000000-0x43ffffff is a mirror of 0x40000000-0x41ffffff. |
| 56 | * |
| 57 | * 0x40000000-0x41efffff, 0x42000000-0x43efffff: memory bank |
| 58 | * 0x41f00000-0x41ffffff, 0x43f00000-0x43ffffff: peripherals |
| 59 | */ |
| 60 | writel(0x0000bc01, SBBASE0); |
| 61 | } else { |
| 62 | /* |
| 63 | * Boot Swap Off: boot from mask ROM |
| 64 | * 0x40000000-0x41ffffff: mask ROM |
| 65 | * 0x42000000-0x43efffff: memory bank (31MB) |
| 66 | * 0x43f00000-0x43ffffff: peripherals (1MB) |
| 67 | */ |
| 68 | writel(0x0000be01, SBBASE0); /* dummy */ |
| 69 | writel(0x0200be01, SBBASE1); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | void uniphier_sbc_init_admulti(void) |
| 74 | { |
| 75 | __uniphier_sbc_init(0); |
| 76 | } |
| 77 | |
| 78 | void uniphier_sbc_init_savepin(void) |
| 79 | { |
| 80 | __uniphier_sbc_init(1); |
| 81 | } |