// SPDX-License-Identifier: GPL-2.0-only /* * Atheros AR71XX/AR724X/AR913X specific setup * * Copyright (C) 2010-2011 Jaiganesh Narayanan <jnarayanan@atheros.com> * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org> * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> * * Parts of this file are based on Atheros' 2.6.15/2.6.31 BSP */ #include <linux/kernel.h> #include <linux/init.h> #include <linux/io.h> #include <linux/memblock.h> #include <linux/err.h> #include <linux/clk.h> #include <linux/of_clk.h> #include <linux/of_fdt.h> #include <linux/irqchip.h> #include <asm/bootinfo.h> #include <asm/idle.h> #include <asm/time.h> /* for mips_hpt_frequency */ #include <asm/reboot.h> /* for _machine_{restart,halt} */ #include <asm/prom.h> #include <asm/fw/fw.h> #include <asm/mach-ath79/ath79.h> #include <asm/mach-ath79/ar71xx_regs.h> #include "common.h" #define ATH79_SYS_TYPE_LEN 64 static char ath79_sys_type[ATH79_SYS_TYPE_LEN]; static void ath79_halt(void) { while (1) cpu_wait(); } static void __init ath79_detect_sys_type(void) { char *chip = "????"; u32 id; u32 major; u32 minor; u32 rev = 0; u32 ver = 1; id = ath79_reset_rr(AR71XX_RESET_REG_REV_ID); major = id & REV_ID_MAJOR_MASK; switch (major) { case REV_ID_MAJOR_AR71XX: minor = id & AR71XX_REV_ID_MINOR_MASK; rev = id >> AR71XX_REV_ID_REVISION_SHIFT; rev &= AR71XX_REV_ID_REVISION_MASK; switch (minor) { case AR71XX_REV_ID_MINOR_AR7130: ath79_soc = ATH79_SOC_AR7130; chip = "7130"; break; case AR71XX_REV_ID_MINOR_AR7141: ath79_soc = ATH79_SOC_AR7141; chip = "7141"; break; case AR71XX_REV_ID_MINOR_AR7161: ath79_soc = ATH79_SOC_AR7161; chip = "7161"; break; } break; case REV_ID_MAJOR_AR7240: ath79_soc = ATH79_SOC_AR7240; chip = "7240"; rev = id & AR724X_REV_ID_REVISION_MASK; break; case REV_ID_MAJOR_AR7241: ath79_soc = ATH79_SOC_AR7241; chip = "7241"; rev = id & AR724X_REV_ID_REVISION_MASK; break; case REV_ID_MAJOR_AR7242: ath79_soc = ATH79_SOC_AR7242; chip = "7242"; rev = id & AR724X_REV_ID_REVISION_MASK; break; case REV_ID_MAJOR_AR913X: minor = id & AR913X_REV_ID_MINOR_MASK; rev = id >> AR913X_REV_ID_REVISION_SHIFT; rev &= AR913X_REV_ID_REVISION_MASK; switch (minor) { case AR913X_REV_ID_MINOR_AR9130: ath79_soc = ATH79_SOC_AR9130; chip = "9130"; break; case AR913X_REV_ID_MINOR_AR9132: ath79_soc = ATH79_SOC_AR9132; chip = "9132"; break; } break; case REV_ID_MAJOR_AR9330: ath79_soc = ATH79_SOC_AR9330; chip = "9330"; rev = id & AR933X_REV_ID_REVISION_MASK; break; case REV_ID_MAJOR_AR9331: ath79_soc = ATH79_SOC_AR9331; chip = "9331"; rev = id & AR933X_REV_ID_REVISION_MASK; break; case REV_ID_MAJOR_AR9341: ath79_soc = ATH79_SOC_AR9341; chip = "9341"; rev = id & AR934X_REV_ID_REVISION_MASK; break; case REV_ID_MAJOR_AR9342: ath79_soc = ATH79_SOC_AR9342; chip = "9342"; rev = id & AR934X_REV_ID_REVISION_MASK; break; case REV_ID_MAJOR_AR9344: ath79_soc = ATH79_SOC_AR9344; chip = "9344"; rev = id & AR934X_REV_ID_REVISION_MASK; break; case REV_ID_MAJOR_QCA9533_V2: ver = 2; ath79_soc_rev = 2; fallthrough; case REV_ID_MAJOR_QCA9533: ath79_soc = ATH79_SOC_QCA9533; chip = "9533"; rev = id & QCA953X_REV_ID_REVISION_MASK; break; case REV_ID_MAJOR_QCA9556: ath79_soc = ATH79_SOC_QCA9556; chip = "9556"; rev = id & QCA955X_REV_ID_REVISION_MASK; break; case REV_ID_MAJOR_QCA9558: ath79_soc = ATH79_SOC_QCA9558; chip = "9558"; rev = id & QCA955X_REV_ID_REVISION_MASK; break; case REV_ID_MAJOR_QCA956X: ath79_soc = ATH79_SOC_QCA956X; chip = "956X"; rev = id & QCA956X_REV_ID_REVISION_MASK; break; case REV_ID_MAJOR_TP9343: ath79_soc = ATH79_SOC_TP9343; chip = "9343"; rev = id & QCA956X_REV_ID_REVISION_MASK; break; default: panic("ath79: unknown SoC, id:0x%08x", id); } if (ver == 1) ath79_soc_rev = rev; if (soc_is_qca953x() || soc_is_qca955x() || soc_is_qca956x()) sprintf(ath79_sys_type, "Qualcomm Atheros QCA%s ver %u rev %u", chip, ver, rev); else if (soc_is_tp9343()) sprintf(ath79_sys_type, "Qualcomm Atheros TP%s rev %u", chip, rev); else sprintf(ath79_sys_type, "Atheros AR%s rev %u", chip, rev); pr_info("SoC: %s\n", ath79_sys_type); } const char *get_system_type(void) { return ath79_sys_type; } unsigned int get_c0_compare_int(void) { return CP0_LEGACY_COMPARE_IRQ; } void __init plat_mem_setup(void) { void *dtb; set_io_port_base(KSEG1); /* Get the position of the FDT passed by the bootloader */ dtb = (void *)fw_getenvl("fdt_start"); if (dtb == NULL) dtb = get_fdt(); if (dtb) __dt_setup_arch((void *)KSEG0ADDR(dtb)); ath79_reset_base = ioremap(AR71XX_RESET_BASE, AR71XX_RESET_SIZE); ath79_pll_base = ioremap(AR71XX_PLL_BASE, AR71XX_PLL_SIZE); ath79_detect_sys_type(); ath79_ddr_ctrl_init(); detect_memory_region(0, ATH79_MEM_SIZE_MIN, ATH79_MEM_SIZE_MAX); _machine_halt = ath79_halt; pm_power_off = ath79_halt; } void __init plat_time_init(void) { struct device_node *np; struct clk *clk; unsigned long cpu_clk_rate; of_clk_init(NULL); np = of_get_cpu_node(0, NULL); if (!np) { pr_err("Failed to get CPU node\n"); return; } clk = of_clk_get(np, 0); if (IS_ERR(clk)) { pr_err("Failed to get CPU clock: %ld\n", PTR_ERR(clk)); return; } cpu_clk_rate = clk_get_rate(clk); pr_info("CPU clock: %lu.%03lu MHz\n", cpu_clk_rate / 1000000, (cpu_clk_rate / 1000) % 1000); mips_hpt_frequency = cpu_clk_rate / 2; clk_put(clk); } void __init arch_init_irq(void) { irqchip_init(); } void __init device_tree_init(void) { unflatten_and_copy_device_tree(); }