^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2010 John Crispin <john@phrozen.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/clk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/memblock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/of_fdt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/bootinfo.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/prom.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <lantiq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "prom.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "clk.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /* access to the ebu needs to be locked between different drivers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) DEFINE_SPINLOCK(ebu_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) EXPORT_SYMBOL_GPL(ebu_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * This is needed by the VPE loader code, just set it to 0 and assume
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * that the firmware hardcodes this value to something useful.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) unsigned long physical_memsize = 0L;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * this struct is filled by the soc specific detection code and holds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * information about the specific soc type, revision and name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static struct ltq_soc_info soc_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) const char *get_system_type(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) return soc_info.sys_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) int ltq_soc_type(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) return soc_info.type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) void __init prom_free_prom_memory(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static void __init prom_init_cmdline(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) int argc = fw_arg0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) char **argv = (char **) KSEG1ADDR(fw_arg1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) arcs_cmdline[0] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) for (i = 0; i < argc; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) char *p = (char *) KSEG1ADDR(argv[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) if (CPHYSADDR(p) && *p) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) void __init plat_mem_setup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) void *dtb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) ioport_resource.start = IOPORT_RESOURCE_START;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) ioport_resource.end = IOPORT_RESOURCE_END;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) iomem_resource.start = IOMEM_RESOURCE_START;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) iomem_resource.end = IOMEM_RESOURCE_END;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) set_io_port_base((unsigned long) KSEG1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) if (fw_passed_dtb) /* UHI interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) dtb = (void *)fw_passed_dtb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) else if (__dtb_start != __dtb_end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) dtb = (void *)__dtb_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) panic("no dtb found");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * Load the devicetree. This causes the chosen node to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * parsed resulting in our memory appearing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) __dt_setup_arch(dtb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) void __init device_tree_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) unflatten_and_copy_device_tree();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) void __init prom_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) /* call the soc specific detetcion code and get it to fill soc_info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) ltq_soc_detect(&soc_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) snprintf(soc_info.sys_type, LTQ_SYS_TYPE_LEN - 1, "%s rev %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) soc_info.name, soc_info.rev_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) soc_info.sys_type[LTQ_SYS_TYPE_LEN - 1] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) pr_info("SoC: %s\n", soc_info.sys_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) prom_init_cmdline();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) #if defined(CONFIG_MIPS_MT_SMP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (register_vsmp_smp_ops())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) panic("failed to register_vsmp_smp_ops()");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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