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2b88563ee5
* rename the target to realtek * add refactored DSA driver * add latest gpio driver * lots of arch cleanups * new irq driver * additional boards Signed-off-by: Bert Vermeulen <bert@biot.com> Signed-off-by: Birger Koblitz <mail@birger-koblitz.de> Signed-off-by: Sander Vanheule <sander@svanheule.net> Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: John Crispin <john@phrozen.org>
125 lines
2.6 KiB
C
125 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* prom.c
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* Early intialization code for the Realtek RTL838X SoC
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*
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* based on the original BSP by
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* Copyright (C) 2006-2012 Tony Wu (tonywu@realtek.com)
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* Copyright (C) 2020 B. Koblitz
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*
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/of_fdt.h>
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#include <linux/libfdt.h>
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#include <asm/bootinfo.h>
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#include <asm/addrspace.h>
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#include <asm/page.h>
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#include <asm/cpu.h>
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#include <mach-rtl83xx.h>
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extern char arcs_cmdline[];
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extern const char __appended_dtb;
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struct rtl83xx_soc_info soc_info;
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const void *fdt;
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const char *get_system_type(void)
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{
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return soc_info.name;
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}
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void __init prom_free_prom_memory(void)
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{
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}
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void __init device_tree_init(void)
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{
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if (!fdt_check_header(&__appended_dtb)) {
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fdt = &__appended_dtb;
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pr_info("Using appended Device Tree.\n");
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}
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initial_boot_params = (void *)fdt;
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unflatten_and_copy_device_tree();
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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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pr_info("Kernel command line: %s\n", arcs_cmdline);
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}
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void __init prom_init(void)
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{
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uint32_t model;
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/* uart0 */
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setup_8250_early_printk_port(0xb8002000, 2, 0);
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soc_info.sw_base = RTL838X_SW_BASE;
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model = sw_r32(RTL838X_MODEL_NAME_INFO) >> 16;
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if (model != 0x8328 && model != 0x8330 && model != 0x8332 &&
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model != 0x8380 && model != 0x8382)
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model = sw_r32(RTL839X_MODEL_NAME_INFO) >> 16;
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soc_info.id = model;
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switch (model) {
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case 0x8328:
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soc_info.name = "RTL8328";
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soc_info.family = RTL8328_FAMILY_ID;
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break;
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case 0x8332:
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soc_info.name = "RTL8332";
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soc_info.family = RTL8380_FAMILY_ID;
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break;
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case 0x8380:
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soc_info.name = "RTL8380";
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soc_info.family = RTL8380_FAMILY_ID;
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break;
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case 0x8382:
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soc_info.name = "RTL8382";
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soc_info.family = RTL8380_FAMILY_ID;
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break;
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case 0x8390:
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soc_info.name = "RTL8390";
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soc_info.family = RTL8390_FAMILY_ID;
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break;
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case 0x8391:
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soc_info.name = "RTL8391";
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soc_info.family = RTL8390_FAMILY_ID;
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break;
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case 0x8392:
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soc_info.name = "RTL8392";
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soc_info.family = RTL8390_FAMILY_ID;
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break;
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case 0x8393:
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soc_info.name = "RTL8393";
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soc_info.family = RTL8390_FAMILY_ID;
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break;
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default:
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soc_info.name = "DEFAULT";
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soc_info.family = 0;
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}
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pr_info("SoC Type: %s\n", get_system_type());
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prom_init_cmdline();
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}
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