^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) * Joshua Henderson, joshua.henderson@microchip.com
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2015 Microchip Technology Inc. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/of_address.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/of_fdt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/of_platform.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/platform_data/sdhci-pic32.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/fw/fw.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/mips-boards/generic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/prom.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "pic32mzda.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) const char *get_system_type(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) return "PIC32MZDA";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static ulong get_fdtaddr(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) ulong ftaddr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) if (fw_passed_dtb && !fw_arg2 && !fw_arg3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) return (ulong)fw_passed_dtb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) if (__dtb_start < __dtb_end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) ftaddr = (ulong)__dtb_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) return ftaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) void __init plat_mem_setup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) void *dtb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) dtb = (void *)get_fdtaddr();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) if (!dtb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) pr_err("pic32: no DTB found.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) return;
^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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * Load the builtin device tree. This causes the chosen node to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * parsed resulting in our memory appearing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) __dt_setup_arch(dtb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) pr_info("Found following command lines\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) pr_info(" boot_command_line: %s\n", boot_command_line);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) pr_info(" arcs_cmdline : %s\n", arcs_cmdline);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #ifdef CONFIG_CMDLINE_BOOL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) pr_info(" builtin_cmdline : %s\n", CONFIG_CMDLINE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) if (dtb != __dtb_start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) strlcpy(arcs_cmdline, boot_command_line, COMMAND_LINE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #ifdef CONFIG_EARLY_PRINTK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) fw_init_early_console(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) pic32_config_init();
^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) static __init void pic32_init_cmdline(int argc, char *argv[])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) unsigned int count = COMMAND_LINE_SIZE - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) char *dst = &(arcs_cmdline[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) char *src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) for (i = 1; i < argc && count; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) src = argv[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) while (*src && count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) *dst++ = *src++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) --count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) *dst++ = ' ';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) if (i > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) --dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) *dst = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) void __init prom_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) pic32_init_cmdline((int)fw_arg0, (char **)fw_arg1);
^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 prom_free_prom_memory(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) void __init device_tree_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) if (!initial_boot_params)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) unflatten_and_copy_device_tree();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) static struct pic32_sdhci_platform_data sdhci_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) .setup_dma = pic32_set_sdhci_adma_fifo_threshold,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static struct of_dev_auxdata pic32_auxdata_lookup[] __initdata = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) OF_DEV_AUXDATA("microchip,pic32mzda-sdhci", 0, "sdhci", &sdhci_data),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) { /* sentinel */}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static int __init pic32_of_prepare_platform_data(struct of_dev_auxdata *lookup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct device_node *root, *np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct resource res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) root = of_find_node_by_path("/");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) for (; lookup->compatible; lookup++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) np = of_find_compatible_node(NULL, NULL, lookup->compatible);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) if (np) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) lookup->name = (char *)np->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (lookup->phys_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) if (!of_address_to_resource(np, 0, &res))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) lookup->phys_addr = res.start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static int __init plat_of_setup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) if (!of_have_populated_dt())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) panic("Device tree not present");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) pic32_of_prepare_platform_data(pic32_auxdata_lookup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (of_platform_default_populate(NULL, pic32_auxdata_lookup, NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) panic("Failed to populate DT");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) arch_initcall(plat_of_setup);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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