| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * ip22-setup.c: SGI specific setup, including init of the feature struct. |
| 4 | * |
| 5 | * Copyright (C) 1996 David S. Miller (davem@davemloft.net) |
| 6 | * Copyright (C) 1997, 1998 Ralf Baechle (ralf@gnu.org) |
| 7 | */ |
| 8 | #include <linux/init.h> |
| 9 | #include <linux/kernel.h> |
| 10 | #include <linux/kdev_t.h> |
| 11 | #include <linux/types.h> |
| 12 | #include <linux/console.h> |
| 13 | #include <linux/sched.h> |
| 14 | #include <linux/tty.h> |
| 15 | |
| 16 | #include <asm/addrspace.h> |
| 17 | #include <asm/bcache.h> |
| 18 | #include <asm/bootinfo.h> |
| 19 | #include <asm/irq.h> |
| 20 | #include <asm/reboot.h> |
| 21 | #include <asm/time.h> |
| 22 | #include <asm/io.h> |
| 23 | #include <asm/traps.h> |
| 24 | #include <asm/sgialib.h> |
| 25 | #include <asm/sgi/mc.h> |
| 26 | #include <asm/sgi/hpc3.h> |
| 27 | #include <asm/sgi/ip22.h> |
| 28 | |
| 29 | extern void ip22_be_init(void) __init; |
| 30 | |
| 31 | void __init plat_mem_setup(void) |
| 32 | { |
| 33 | char *ctype; |
| 34 | char *cserial; |
| 35 | |
| 36 | board_be_init = ip22_be_init; |
| 37 | |
| 38 | /* Init the INDY HPC I/O controller. Need to call this before |
| 39 | * fucking with the memory controller because it needs to know the |
| 40 | * boardID and whether this is a Guiness or a FullHouse machine. |
| 41 | */ |
| 42 | sgihpc_init(); |
| 43 | |
| 44 | /* Init INDY memory controller. */ |
| 45 | sgimc_init(); |
| 46 | |
| 47 | #ifdef CONFIG_BOARD_SCACHE |
| 48 | /* Now enable boardcaches, if any. */ |
| 49 | indy_sc_init(); |
| 50 | #endif |
| 51 | |
| 52 | /* Set EISA IO port base for Indigo2 |
| 53 | * ioremap cannot fail */ |
| 54 | set_io_port_base((unsigned long)ioremap(0x00080000, |
| 55 | 0x1fffffff - 0x00080000)); |
| 56 | /* ARCS console environment variable is set to "g?" for |
| 57 | * graphics console, it is set to "d" for the first serial |
| 58 | * line and "d2" for the second serial line. |
| 59 | * |
| 60 | * Need to check if the case is 'g' but no keyboard: |
| 61 | * (ConsoleIn/Out = serial) |
| 62 | */ |
| 63 | ctype = ArcGetEnvironmentVariable("console"); |
| 64 | cserial = ArcGetEnvironmentVariable("ConsoleOut"); |
| 65 | |
| 66 | if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) { |
| 67 | static char options[8] __initdata; |
| 68 | char *baud = ArcGetEnvironmentVariable("dbaud"); |
| 69 | if (baud) |
| 70 | strcpy(options, baud); |
| 71 | add_preferred_console("ttyS", *(ctype + 1) == '2' ? 1 : 0, |
| 72 | baud ? options : NULL); |
| 73 | } else if (!ctype || *ctype != 'g') { |
| 74 | /* Use ARC if we don't want serial ('d') or graphics ('g'). */ |
| 75 | prom_flags |= PROM_FLAG_USE_AS_CONSOLE; |
| 76 | add_preferred_console("arc", 0, NULL); |
| 77 | } |
| 78 | } |