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
 9#include <linux/module.h>
10#include <linux/clk.h>
 
 
 
11#include <asm/bootinfo.h>
12#include <asm/time.h>
 
13
14#include <lantiq.h>
15
16#include "prom.h"
17#include "clk.h"
18
 
 
 
 
 
 
 
 
 
 
 
 
 
 
19static struct ltq_soc_info soc_info;
20
21unsigned int ltq_get_cpu_ver(void)
22{
23	return soc_info.rev;
24}
25EXPORT_SYMBOL(ltq_get_cpu_ver);
26
27unsigned int ltq_get_soc_type(void)
28{
29	return soc_info.type;
30}
31EXPORT_SYMBOL(ltq_get_soc_type);
32
33const char *get_system_type(void)
34{
35	return soc_info.sys_type;
36}
37
38void prom_free_prom_memory(void)
39{
40}
41
42static void __init prom_init_cmdline(void)
43{
44	int argc = fw_arg0;
45	char **argv = (char **) KSEG1ADDR(fw_arg1);
46	int i;
47
 
 
48	for (i = 0; i < argc; i++) {
49		char *p = (char *)  KSEG1ADDR(argv[i]);
50
51		if (p && *p) {
52			strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
53			strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
54		}
55	}
56}
57
58void __init prom_init(void)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
59{
60	struct clk *clk;
 
61
 
 
 
62	ltq_soc_detect(&soc_info);
63	clk_init();
64	clk = clk_get(0, "cpu");
65	snprintf(soc_info.sys_type, LTQ_SYS_TYPE_LEN - 1, "%s rev1.%d",
66		soc_info.name, soc_info.rev);
67	clk_put(clk);
68	soc_info.sys_type[LTQ_SYS_TYPE_LEN - 1] = '\0';
69	pr_info("SoC: %s\n", soc_info.sys_type);
70	prom_init_cmdline();
 
 
 
 
 
71}

  1// SPDX-License-Identifier: GPL-2.0-only
  2/*
 
 
 
  3 *
  4 * Copyright (C) 2010 John Crispin <john@phrozen.org>
  5 */
  6
  7#include <linux/export.h>
  8#include <linux/clk.h>
  9#include <linux/memblock.h>
 10#include <linux/of_fdt.h>
 11
 12#include <asm/bootinfo.h>
 13#include <asm/time.h>
 14#include <asm/prom.h>
 15
 16#include <lantiq.h>
 17
 18#include "prom.h"
 19#include "clk.h"
 20
 21/* access to the ebu needs to be locked between different drivers */
 22DEFINE_SPINLOCK(ebu_lock);
 23EXPORT_SYMBOL_GPL(ebu_lock);
 24
 25/*
 26 * This is needed by the VPE loader code, just set it to 0 and assume
 27 * that the firmware hardcodes this value to something useful.
 28 */
 29unsigned long physical_memsize = 0L;
 30
 31/*
 32 * this struct is filled by the soc specific detection code and holds
 33 * information about the specific soc type, revision and name
 34 */
 35static struct ltq_soc_info soc_info;
 36
 37const char *get_system_type(void)
 38{
 39	return soc_info.sys_type;
 40}
 
 41
 42int ltq_soc_type(void)
 43{
 44	return soc_info.type;
 45}
 
 
 
 
 
 
 46
 47void __init prom_free_prom_memory(void)
 48{
 49}
 50
 51static void __init prom_init_cmdline(void)
 52{
 53	int argc = fw_arg0;
 54	char **argv = (char **) KSEG1ADDR(fw_arg1);
 55	int i;
 56
 57	arcs_cmdline[0] = '\0';
 58
 59	for (i = 0; i < argc; i++) {
 60		char *p = (char *) KSEG1ADDR(argv[i]);
 61
 62		if (CPHYSADDR(p) && *p) {
 63			strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
 64			strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
 65		}
 66	}
 67}
 68
 69void __init plat_mem_setup(void)
 70{
 71	void *dtb;
 72
 73	ioport_resource.start = IOPORT_RESOURCE_START;
 74	ioport_resource.end = IOPORT_RESOURCE_END;
 75	iomem_resource.start = IOMEM_RESOURCE_START;
 76	iomem_resource.end = IOMEM_RESOURCE_END;
 77
 78	set_io_port_base((unsigned long) KSEG1);
 79
 80	if (fw_passed_dtb) /* UHI interface */
 81		dtb = (void *)fw_passed_dtb;
 82	else if (__dtb_start != __dtb_end)
 83		dtb = (void *)__dtb_start;
 84	else
 85		panic("no dtb found");
 86
 87	/*
 88	 * Load the devicetree. This causes the chosen node to be
 89	 * parsed resulting in our memory appearing
 90	 */
 91	__dt_setup_arch(dtb);
 92}
 93
 94void __init device_tree_init(void)
 95{
 96	unflatten_and_copy_device_tree();
 97}
 98
 99void __init prom_init(void)
100{
101	/* call the soc specific detetcion code and get it to fill soc_info */
102	ltq_soc_detect(&soc_info);
103	snprintf(soc_info.sys_type, LTQ_SYS_TYPE_LEN - 1, "%s rev %s",
104		soc_info.name, soc_info.rev_type);
 
 
 
105	soc_info.sys_type[LTQ_SYS_TYPE_LEN - 1] = '\0';
106	pr_info("SoC: %s\n", soc_info.sys_type);
107	prom_init_cmdline();
108
109#if defined(CONFIG_MIPS_MT_SMP)
110	if (register_vsmp_smp_ops())
111		panic("failed to register_vsmp_smp_ops()");
112#endif
113}