| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Setup pointers to hardware dependent routines. |
| 3 | * |
| 4 | * This file is subject to the terms and conditions of the GNU General Public |
| 5 | * License. See the file "COPYING" in the main directory of this archive |
| 6 | * for more details. |
| 7 | * |
| 8 | * Copyright (C) 1996, 1997, 2004, 05 by Ralf Baechle (ralf@linux-mips.org) |
| 9 | * Copyright (C) 2001, 2002, 2003 by Liam Davies (ldavies@agile.tv) |
| 10 | * |
| 11 | */ |
| 12 | #include <linux/init.h> |
| 13 | #include <linux/interrupt.h> |
| 14 | #include <linux/io.h> |
| 15 | #include <linux/ioport.h> |
| 16 | #include <linux/pm.h> |
| 17 | |
| 18 | #include <asm/bootinfo.h> |
| 19 | #include <asm/reboot.h> |
| 20 | #include <asm/setup.h> |
| 21 | #include <asm/gt64120.h> |
| 22 | |
| 23 | #include <cobalt.h> |
| 24 | |
| 25 | extern void cobalt_machine_restart(char *command); |
| 26 | extern void cobalt_machine_halt(void); |
| 27 | |
| 28 | const char *get_system_type(void) |
| 29 | { |
| 30 | switch (cobalt_board_id) { |
| 31 | case COBALT_BRD_ID_QUBE1: |
| 32 | return "Cobalt Qube"; |
| 33 | case COBALT_BRD_ID_RAQ1: |
| 34 | return "Cobalt RaQ"; |
| 35 | case COBALT_BRD_ID_QUBE2: |
| 36 | return "Cobalt Qube2"; |
| 37 | case COBALT_BRD_ID_RAQ2: |
| 38 | return "Cobalt RaQ2"; |
| 39 | } |
| 40 | return "MIPS Cobalt"; |
| 41 | } |
| 42 | |
| 43 | /* |
| 44 | * Cobalt doesn't have PS/2 keyboard/mouse interfaces, |
| 45 | * keyboard controller is never used. |
| 46 | * Also PCI-ISA bridge DMA controller is never used. |
| 47 | */ |
| 48 | static struct resource cobalt_reserved_resources[] = { |
| 49 | { /* dma1 */ |
| 50 | .start = 0x00, |
| 51 | .end = 0x1f, |
| 52 | .name = "reserved", |
| 53 | .flags = IORESOURCE_BUSY | IORESOURCE_IO, |
| 54 | }, |
| 55 | { /* keyboard */ |
| 56 | .start = 0x60, |
| 57 | .end = 0x6f, |
| 58 | .name = "reserved", |
| 59 | .flags = IORESOURCE_BUSY | IORESOURCE_IO, |
| 60 | }, |
| 61 | { /* dma page reg */ |
| 62 | .start = 0x80, |
| 63 | .end = 0x8f, |
| 64 | .name = "reserved", |
| 65 | .flags = IORESOURCE_BUSY | IORESOURCE_IO, |
| 66 | }, |
| 67 | { /* dma2 */ |
| 68 | .start = 0xc0, |
| 69 | .end = 0xdf, |
| 70 | .name = "reserved", |
| 71 | .flags = IORESOURCE_BUSY | IORESOURCE_IO, |
| 72 | }, |
| 73 | }; |
| 74 | |
| 75 | void __init plat_mem_setup(void) |
| 76 | { |
| 77 | int i; |
| 78 | |
| 79 | _machine_restart = cobalt_machine_restart; |
| 80 | _machine_halt = cobalt_machine_halt; |
| 81 | pm_power_off = cobalt_machine_halt; |
| 82 | |
| 83 | set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE)); |
| 84 | |
| 85 | /* I/O port resource */ |
| 86 | ioport_resource.end = 0x01ffffff; |
| 87 | |
| 88 | /* These resources have been reserved by VIA SuperI/O chip. */ |
| 89 | for (i = 0; i < ARRAY_SIZE(cobalt_reserved_resources); i++) |
| 90 | request_resource(&ioport_resource, cobalt_reserved_resources + i); |
| 91 | } |
| 92 | |
| 93 | /* |
| 94 | * Prom init. We read our one and only communication with the firmware. |
| 95 | * Grab the amount of installed memory. |
| 96 | * Better boot loaders (CoLo) pass a command line too :-) |
| 97 | */ |
| 98 | |
| 99 | void __init prom_init(void) |
| 100 | { |
| 101 | unsigned long memsz; |
| 102 | int argc, i; |
| 103 | char **argv; |
| 104 | |
| 105 | memsz = fw_arg0 & 0x7fff0000; |
| 106 | argc = fw_arg0 & 0x0000ffff; |
| 107 | argv = (char **)fw_arg1; |
| 108 | |
| 109 | for (i = 1; i < argc; i++) { |
| 110 | strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE); |
| 111 | if (i < (argc - 1)) |
| 112 | strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE); |
| 113 | } |
| 114 | |
| 115 | add_memory_region(0x0, memsz, BOOT_MEM_RAM); |
| 116 | |
| 117 | setup_8250_early_printk_port(CKSEG1ADDR(0x1c800000), 0, 0); |
| 118 | } |
| 119 | |
| 120 | void __init prom_free_prom_memory(void) |
| 121 | { |
| 122 | /* Nothing to do! */ |
| 123 | } |