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106 lines
2.3 KiB
106 lines
2.3 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* |
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* Copyright (C) 2010 John Crispin <[email protected]> |
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*/ |
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#include <linux/export.h> |
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#include <linux/clk.h> |
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#include <linux/memblock.h> |
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#include <linux/of_fdt.h> |
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#include <asm/bootinfo.h> |
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#include <asm/time.h> |
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#include <asm/prom.h> |
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#include <lantiq.h> |
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#include "prom.h" |
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#include "clk.h" |
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/* access to the ebu needs to be locked between different drivers */ |
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DEFINE_SPINLOCK(ebu_lock); |
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EXPORT_SYMBOL_GPL(ebu_lock); |
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/* |
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* This is needed by the VPE loader code, just set it to 0 and assume |
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* that the firmware hardcodes this value to something useful. |
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*/ |
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unsigned long physical_memsize = 0L; |
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/* |
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* this struct is filled by the soc specific detection code and holds |
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* information about the specific soc type, revision and name |
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*/ |
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static struct ltq_soc_info soc_info; |
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const char *get_system_type(void) |
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{ |
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return soc_info.sys_type; |
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} |
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int ltq_soc_type(void) |
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{ |
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return soc_info.type; |
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} |
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static void __init prom_init_cmdline(void) |
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{ |
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int argc = fw_arg0; |
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char **argv = (char **) KSEG1ADDR(fw_arg1); |
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int i; |
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arcs_cmdline[0] = '\0'; |
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for (i = 0; i < argc; i++) { |
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char *p = (char *) KSEG1ADDR(argv[i]); |
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if (CPHYSADDR(p) && *p) { |
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strlcat(arcs_cmdline, p, sizeof(arcs_cmdline)); |
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strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline)); |
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} |
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} |
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} |
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void __init plat_mem_setup(void) |
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{ |
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void *dtb; |
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ioport_resource.start = IOPORT_RESOURCE_START; |
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ioport_resource.end = IOPORT_RESOURCE_END; |
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iomem_resource.start = IOMEM_RESOURCE_START; |
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iomem_resource.end = IOMEM_RESOURCE_END; |
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set_io_port_base((unsigned long) KSEG1); |
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dtb = get_fdt(); |
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if (dtb == NULL) |
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panic("no dtb found"); |
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/* |
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* Load the devicetree. This causes the chosen node to be |
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* parsed resulting in our memory appearing |
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*/ |
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__dt_setup_arch(dtb); |
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} |
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void __init device_tree_init(void) |
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{ |
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unflatten_and_copy_device_tree(); |
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} |
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void __init prom_init(void) |
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{ |
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/* call the soc specific detetcion code and get it to fill soc_info */ |
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ltq_soc_detect(&soc_info); |
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snprintf(soc_info.sys_type, LTQ_SYS_TYPE_LEN - 1, "%s rev %s", |
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soc_info.name, soc_info.rev_type); |
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soc_info.sys_type[LTQ_SYS_TYPE_LEN - 1] = '\0'; |
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pr_info("SoC: %s\n", soc_info.sys_type); |
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prom_init_cmdline(); |
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#if defined(CONFIG_MIPS_MT_SMP) |
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if (register_vsmp_smp_ops()) |
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panic("failed to register_vsmp_smp_ops()"); |
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#endif |
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}
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