John Crispin | 171bb2f | 2011-03-30 09:27:47 +0200 | [diff] [blame] | 1 | /* |
| 2 | * This program is free software; you can redistribute it and/or modify it |
| 3 | * under the terms of the GNU General Public License version 2 as published |
| 4 | * by the Free Software Foundation. |
| 5 | * |
| 6 | * Copyright (C) 2010 John Crispin <blogic@openwrt.org> |
| 7 | */ |
| 8 | |
John Crispin | 4af92e7 | 2011-11-10 21:33:07 +0100 | [diff] [blame] | 9 | #include <linux/export.h> |
John Crispin | 171bb2f | 2011-03-30 09:27:47 +0200 | [diff] [blame] | 10 | #include <linux/clk.h> |
John Crispin | a9188bc | 2012-07-22 08:56:00 +0200 | [diff] [blame] | 11 | #include <linux/bootmem.h> |
John Crispin | a039222 | 2012-04-13 20:56:13 +0200 | [diff] [blame] | 12 | #include <linux/of_platform.h> |
John Crispin | a9188bc | 2012-07-22 08:56:00 +0200 | [diff] [blame] | 13 | #include <linux/of_fdt.h> |
| 14 | |
John Crispin | 171bb2f | 2011-03-30 09:27:47 +0200 | [diff] [blame] | 15 | #include <asm/bootinfo.h> |
| 16 | #include <asm/time.h> |
Rob Herring | 089a49b | 2013-09-07 14:58:54 -0500 | [diff] [blame] | 17 | #include <asm/prom.h> |
John Crispin | 171bb2f | 2011-03-30 09:27:47 +0200 | [diff] [blame] | 18 | |
| 19 | #include <lantiq.h> |
| 20 | |
| 21 | #include "prom.h" |
| 22 | #include "clk.h" |
| 23 | |
John Crispin | a039222 | 2012-04-13 20:56:13 +0200 | [diff] [blame] | 24 | /* access to the ebu needs to be locked between different drivers */ |
| 25 | DEFINE_SPINLOCK(ebu_lock); |
| 26 | EXPORT_SYMBOL_GPL(ebu_lock); |
John Crispin | 171bb2f | 2011-03-30 09:27:47 +0200 | [diff] [blame] | 27 | |
John Crispin | a039222 | 2012-04-13 20:56:13 +0200 | [diff] [blame] | 28 | /* |
| 29 | * this struct is filled by the soc specific detection code and holds |
| 30 | * information about the specific soc type, revision and name |
| 31 | */ |
| 32 | static struct ltq_soc_info soc_info; |
John Crispin | 171bb2f | 2011-03-30 09:27:47 +0200 | [diff] [blame] | 33 | |
John Crispin | 171bb2f | 2011-03-30 09:27:47 +0200 | [diff] [blame] | 34 | const char *get_system_type(void) |
| 35 | { |
| 36 | return soc_info.sys_type; |
| 37 | } |
| 38 | |
John Crispin | e8b8ca8 | 2014-09-10 22:29:21 +0200 | [diff] [blame] | 39 | int ltq_soc_type(void) |
| 40 | { |
| 41 | return soc_info.type; |
| 42 | } |
| 43 | |
John Crispin | 171bb2f | 2011-03-30 09:27:47 +0200 | [diff] [blame] | 44 | void prom_free_prom_memory(void) |
| 45 | { |
| 46 | } |
| 47 | |
| 48 | static void __init prom_init_cmdline(void) |
| 49 | { |
| 50 | int argc = fw_arg0; |
| 51 | char **argv = (char **) KSEG1ADDR(fw_arg1); |
| 52 | int i; |
| 53 | |
Thomas Langer | 730fa03 | 2012-05-02 12:27:39 +0200 | [diff] [blame] | 54 | arcs_cmdline[0] = '\0'; |
John Crispin | 171bb2f | 2011-03-30 09:27:47 +0200 | [diff] [blame] | 55 | |
Thomas Langer | 730fa03 | 2012-05-02 12:27:39 +0200 | [diff] [blame] | 56 | for (i = 0; i < argc; i++) { |
| 57 | char *p = (char *) KSEG1ADDR(argv[i]); |
| 58 | |
| 59 | if (CPHYSADDR(p) && *p) { |
John Crispin | 171bb2f | 2011-03-30 09:27:47 +0200 | [diff] [blame] | 60 | strlcat(arcs_cmdline, p, sizeof(arcs_cmdline)); |
| 61 | strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline)); |
| 62 | } |
| 63 | } |
| 64 | } |
| 65 | |
John Crispin | a039222 | 2012-04-13 20:56:13 +0200 | [diff] [blame] | 66 | void __init plat_mem_setup(void) |
| 67 | { |
| 68 | ioport_resource.start = IOPORT_RESOURCE_START; |
| 69 | ioport_resource.end = IOPORT_RESOURCE_END; |
| 70 | iomem_resource.start = IOMEM_RESOURCE_START; |
| 71 | iomem_resource.end = IOMEM_RESOURCE_END; |
| 72 | |
| 73 | set_io_port_base((unsigned long) KSEG1); |
| 74 | |
| 75 | /* |
| 76 | * Load the builtin devicetree. This causes the chosen node to be |
| 77 | * parsed resulting in our memory appearing |
| 78 | */ |
Rob Herring | 0cdde83 | 2014-03-31 15:13:07 -0500 | [diff] [blame] | 79 | __dt_setup_arch(__dtb_start); |
John Crispin | 1732786 | 2014-10-10 23:14:29 +0200 | [diff] [blame] | 80 | |
| 81 | strlcpy(arcs_cmdline, boot_command_line, COMMAND_LINE_SIZE); |
John Crispin | a039222 | 2012-04-13 20:56:13 +0200 | [diff] [blame] | 82 | } |
| 83 | |
John Crispin | a9188bc | 2012-07-22 08:56:00 +0200 | [diff] [blame] | 84 | void __init device_tree_init(void) |
| 85 | { |
Rob Herring | 10fbdaa | 2014-04-02 17:50:19 -0500 | [diff] [blame] | 86 | unflatten_and_copy_device_tree(); |
John Crispin | a9188bc | 2012-07-22 08:56:00 +0200 | [diff] [blame] | 87 | } |
| 88 | |
John Crispin | 171bb2f | 2011-03-30 09:27:47 +0200 | [diff] [blame] | 89 | void __init prom_init(void) |
| 90 | { |
John Crispin | a039222 | 2012-04-13 20:56:13 +0200 | [diff] [blame] | 91 | /* call the soc specific detetcion code and get it to fill soc_info */ |
John Crispin | 171bb2f | 2011-03-30 09:27:47 +0200 | [diff] [blame] | 92 | ltq_soc_detect(&soc_info); |
John Crispin | a039222 | 2012-04-13 20:56:13 +0200 | [diff] [blame] | 93 | snprintf(soc_info.sys_type, LTQ_SYS_TYPE_LEN - 1, "%s rev %s", |
| 94 | soc_info.name, soc_info.rev_type); |
John Crispin | 171bb2f | 2011-03-30 09:27:47 +0200 | [diff] [blame] | 95 | soc_info.sys_type[LTQ_SYS_TYPE_LEN - 1] = '\0'; |
| 96 | pr_info("SoC: %s\n", soc_info.sys_type); |
| 97 | prom_init_cmdline(); |
John Crispin | a8d096e | 2012-04-30 11:33:05 +0200 | [diff] [blame] | 98 | |
| 99 | #if defined(CONFIG_MIPS_MT_SMP) |
| 100 | if (register_vsmp_smp_ops()) |
| 101 | panic("failed to register_vsmp_smp_ops()"); |
| 102 | #endif |
John Crispin | 171bb2f | 2011-03-30 09:27:47 +0200 | [diff] [blame] | 103 | } |
John Crispin | a039222 | 2012-04-13 20:56:13 +0200 | [diff] [blame] | 104 | |
| 105 | int __init plat_of_setup(void) |
| 106 | { |
Kevin Cernekee | 84988c0 | 2014-10-20 21:28:02 -0700 | [diff] [blame] | 107 | return __dt_register_buses(soc_info.compatible, "simple-bus"); |
John Crispin | a039222 | 2012-04-13 20:56:13 +0200 | [diff] [blame] | 108 | } |
| 109 | |
| 110 | arch_initcall(plat_of_setup); |