| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | /* |
| 3 | * Copyright 2012 Sascha Hauer, Pengutronix |
| 4 | */ |
| 5 | |
| 6 | #include <linux/init.h> |
| 7 | #include <linux/irq.h> |
| 8 | #include <linux/of_address.h> |
| 9 | #include <linux/of_irq.h> |
| 10 | #include <linux/of_platform.h> |
| 11 | #include <linux/mm.h> |
| 12 | #include <asm/mach/arch.h> |
| 13 | #include <asm/mach/map.h> |
| 14 | #include <asm/mach/time.h> |
| 15 | |
| 16 | #include "common.h" |
| 17 | #include "hardware.h" |
| 18 | #include "mx27.h" |
| 19 | |
| 20 | /* MX27 memory map definition */ |
| 21 | static struct map_desc imx27_io_desc[] __initdata = { |
| 22 | /* |
| 23 | * this fixed mapping covers: |
| 24 | * - AIPI1 |
| 25 | * - AIPI2 |
| 26 | * - AITC |
| 27 | * - ROM Patch |
| 28 | * - and some reserved space |
| 29 | */ |
| 30 | imx_map_entry(MX27, AIPI, MT_DEVICE), |
| 31 | /* |
| 32 | * this fixed mapping covers: |
| 33 | * - CSI |
| 34 | * - ATA |
| 35 | */ |
| 36 | imx_map_entry(MX27, SAHB1, MT_DEVICE), |
| 37 | /* |
| 38 | * this fixed mapping covers: |
| 39 | * - EMI |
| 40 | */ |
| 41 | imx_map_entry(MX27, X_MEMC, MT_DEVICE), |
| 42 | }; |
| 43 | |
| 44 | /* |
| 45 | * Initialize the memory map. It is called during the |
| 46 | * system startup to create static physical to virtual |
| 47 | * memory map for the IO modules. |
| 48 | */ |
| 49 | static void __init mx27_map_io(void) |
| 50 | { |
| 51 | iotable_init(imx27_io_desc, ARRAY_SIZE(imx27_io_desc)); |
| 52 | } |
| 53 | |
| 54 | static void __init imx27_init_early(void) |
| 55 | { |
| 56 | mxc_set_cpu_type(MXC_CPU_MX27); |
| 57 | } |
| 58 | |
| 59 | static void __init mx27_init_irq(void) |
| 60 | { |
| 61 | void __iomem *avic_base; |
| 62 | struct device_node *np; |
| 63 | |
| 64 | np = of_find_compatible_node(NULL, NULL, "fsl,avic"); |
| 65 | avic_base = of_iomap(np, 0); |
| 66 | BUG_ON(!avic_base); |
| 67 | mxc_init_irq(avic_base); |
| 68 | } |
| 69 | |
| 70 | static const char * const imx27_dt_board_compat[] __initconst = { |
| 71 | "fsl,imx27", |
| 72 | NULL |
| 73 | }; |
| 74 | |
| 75 | DT_MACHINE_START(IMX27_DT, "Freescale i.MX27 (Device Tree Support)") |
| 76 | .map_io = mx27_map_io, |
| 77 | .init_early = imx27_init_early, |
| 78 | .init_irq = mx27_init_irq, |
| 79 | .init_late = imx27_pm_init, |
| 80 | .dt_compat = imx27_dt_board_compat, |
| 81 | MACHINE_END |