Merge tag 'usb-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
[linux/fpc-iii.git] / arch / mips / lantiq / prom.c
blob51a218f04fe0dd073ef65408c9137330a6a43fa9
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
4 * Copyright (C) 2010 John Crispin <john@phrozen.org>
5 */
7 #include <linux/export.h>
8 #include <linux/clk.h>
9 #include <linux/memblock.h>
10 #include <linux/of_fdt.h>
12 #include <asm/bootinfo.h>
13 #include <asm/time.h>
14 #include <asm/prom.h>
16 #include <lantiq.h>
18 #include "prom.h"
19 #include "clk.h"
21 /* access to the ebu needs to be locked between different drivers */
22 DEFINE_SPINLOCK(ebu_lock);
23 EXPORT_SYMBOL_GPL(ebu_lock);
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.
29 unsigned long physical_memsize = 0L;
32 * this struct is filled by the soc specific detection code and holds
33 * information about the specific soc type, revision and name
35 static struct ltq_soc_info soc_info;
37 const char *get_system_type(void)
39 return soc_info.sys_type;
42 int ltq_soc_type(void)
44 return soc_info.type;
47 void __init prom_free_prom_memory(void)
51 static void __init prom_init_cmdline(void)
53 int argc = fw_arg0;
54 char **argv = (char **) KSEG1ADDR(fw_arg1);
55 int i;
57 arcs_cmdline[0] = '\0';
59 for (i = 0; i < argc; i++) {
60 char *p = (char *) KSEG1ADDR(argv[i]);
62 if (CPHYSADDR(p) && *p) {
63 strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
64 strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
69 void __init plat_mem_setup(void)
71 void *dtb;
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;
78 set_io_port_base((unsigned long) KSEG1);
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");
88 * Load the devicetree. This causes the chosen node to be
89 * parsed resulting in our memory appearing
91 __dt_setup_arch(dtb);
94 void __init device_tree_init(void)
96 unflatten_and_copy_device_tree();
99 void __init prom_init(void)
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();
109 #if defined(CONFIG_MIPS_MT_SMP)
110 if (register_vsmp_smp_ops())
111 panic("failed to register_vsmp_smp_ops()");
112 #endif