diff options
Diffstat (limited to 'target/linux/realtek/files-5.10/arch/mips/rtl838x/prom.c')
| -rw-r--r-- | target/linux/realtek/files-5.10/arch/mips/rtl838x/prom.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/target/linux/realtek/files-5.10/arch/mips/rtl838x/prom.c b/target/linux/realtek/files-5.10/arch/mips/rtl838x/prom.c new file mode 100644 index 0000000000..3390c04334 --- /dev/null +++ b/target/linux/realtek/files-5.10/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(); +} |