ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/target/linux/realtek/files-5.4/arch/mips/rtl838x/prom.c b/target/linux/realtek/files-5.4/arch/mips/rtl838x/prom.c
new file mode 100644
index 0000000..3390c04
--- /dev/null
+++ b/target/linux/realtek/files-5.4/arch/mips/rtl838x/prom.c
@@ -0,0 +1,183 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * prom.c
+ * Early intialization code for the Realtek RTL838X SoC
+ *
+ * based on the original BSP by
+ * Copyright (C) 2006-2012 Tony Wu (tonywu@realtek.com)
+ * Copyright (C) 2020 B. Koblitz
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/of_fdt.h>
+#include <linux/libfdt.h>
+#include <asm/bootinfo.h>
+#include <asm/addrspace.h>
+#include <asm/page.h>
+#include <asm/cpu.h>
+
+#include <mach-rtl83xx.h>
+
+extern char arcs_cmdline[];
+extern const char __appended_dtb;
+
+struct rtl83xx_soc_info soc_info;
+const void *fdt;
+
+const char *get_system_type(void)
+{
+ return soc_info.name;
+}
+
+void __init prom_free_prom_memory(void)
+{
+
+}
+
+void __init device_tree_init(void)
+{
+ if (!fdt_check_header(&__appended_dtb)) {
+ fdt = &__appended_dtb;
+ pr_info("Using appended Device Tree.\n");
+ }
+ initial_boot_params = (void *)fdt;
+ unflatten_and_copy_device_tree();
+}
+
+static void __init prom_init_cmdline(void)
+{
+ int argc = fw_arg0;
+ char **argv = (char **) KSEG1ADDR(fw_arg1);
+ int i;
+
+ arcs_cmdline[0] = '\0';
+
+ for (i = 0; i < argc; i++) {
+ char *p = (char *) KSEG1ADDR(argv[i]);
+
+ if (CPHYSADDR(p) && *p) {
+ strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
+ strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
+ }
+ }
+ pr_info("Kernel command line: %s\n", arcs_cmdline);
+}
+
+void __init identify_rtl9302(void)
+{
+ switch (sw_r32(RTL93XX_MODEL_NAME_INFO) & 0xfffffff0) {
+ case 0x93020810:
+ soc_info.name = "RTL9302A 12x2.5G";
+ break;
+ case 0x93021010:
+ soc_info.name = "RTL9302B 8x2.5G";
+ break;
+ case 0x93021810:
+ soc_info.name = "RTL9302C 16x2.5G";
+ break;
+ case 0x93022010:
+ soc_info.name = "RTL9302D 24x2.5G";
+ break;
+ case 0x93020800:
+ soc_info.name = "RTL9302A";
+ break;
+ case 0x93021000:
+ soc_info.name = "RTL9302B";
+ break;
+ case 0x93021800:
+ soc_info.name = "RTL9302C";
+ break;
+ case 0x93022000:
+ soc_info.name = "RTL9302D";
+ break;
+ case 0x93023001:
+ soc_info.name = "RTL9302F";
+ break;
+ default:
+ soc_info.name = "RTL9302";
+ }
+}
+
+void __init prom_init(void)
+{
+ uint32_t model;
+
+ /* uart0 */
+ setup_8250_early_printk_port(0xb8002000, 2, 0);
+
+ model = sw_r32(RTL838X_MODEL_NAME_INFO);
+ pr_info("RTL838X model is %x\n", model);
+ model = model >> 16 & 0xFFFF;
+
+ if ((model != 0x8328) && (model != 0x8330) && (model != 0x8332)
+ && (model != 0x8380) && (model != 0x8382)) {
+ model = sw_r32(RTL839X_MODEL_NAME_INFO);
+ pr_info("RTL839X model is %x\n", model);
+ model = model >> 16 & 0xFFFF;
+ }
+
+ if ((model & 0x8390) != 0x8380 && (model & 0x8390) != 0x8390) {
+ model = sw_r32(RTL93XX_MODEL_NAME_INFO);
+ pr_info("RTL93XX model is %x\n", model);
+ model = model >> 16 & 0xFFFF;
+ }
+
+ soc_info.id = model;
+
+ switch (model) {
+ case 0x8328:
+ soc_info.name = "RTL8328";
+ soc_info.family = RTL8328_FAMILY_ID;
+ break;
+ case 0x8332:
+ soc_info.name = "RTL8332";
+ soc_info.family = RTL8380_FAMILY_ID;
+ break;
+ case 0x8380:
+ soc_info.name = "RTL8380";
+ soc_info.family = RTL8380_FAMILY_ID;
+ break;
+ case 0x8382:
+ soc_info.name = "RTL8382";
+ soc_info.family = RTL8380_FAMILY_ID;
+ break;
+ case 0x8390:
+ soc_info.name = "RTL8390";
+ soc_info.family = RTL8390_FAMILY_ID;
+ break;
+ case 0x8391:
+ soc_info.name = "RTL8391";
+ soc_info.family = RTL8390_FAMILY_ID;
+ break;
+ case 0x8392:
+ soc_info.name = "RTL8392";
+ soc_info.family = RTL8390_FAMILY_ID;
+ break;
+ case 0x8393:
+ soc_info.name = "RTL8393";
+ soc_info.family = RTL8390_FAMILY_ID;
+ break;
+ case 0x9301:
+ soc_info.name = "RTL9301";
+ soc_info.family = RTL9300_FAMILY_ID;
+ break;
+ case 0x9302:
+ identify_rtl9302();
+ soc_info.family = RTL9300_FAMILY_ID;
+ break;
+ case 0x9313:
+ soc_info.name = "RTL9313";
+ soc_info.family = RTL9310_FAMILY_ID;
+ break;
+ default:
+ soc_info.name = "DEFAULT";
+ soc_info.family = 0;
+ }
+
+ pr_info("SoC Type: %s\n", get_system_type());
+
+ prom_init_cmdline();
+}