From 983e37007da506e8145f9b3a9e1dce5c11116fb0 Mon Sep 17 00:00:00 2001 From: Tom Rini Date: Mon, 7 Nov 2016 21:34:54 -0500 Subject: arm: Introduce arch/arm/mach-omap2 for OMAP2 derivative platforms This moves what was in arch/arm/cpu/armv7/omap-common in to arch/arm/mach-omap2 and moves arch/arm/cpu/armv7/{am33xx,omap3,omap4,omap5} in to arch/arm/mach-omap2 as subdirectories. All refernces to the former locations are updated to the current locations. For the logic to decide what our outputs are, consolidate the tests into a single config.mk rather than including 4. Signed-off-by: Tom Rini --- arch/arm/mach-omap2/omap3/sys_info.c | 343 +++++++++++++++++++++++++++++++++++ 1 file changed, 343 insertions(+) create mode 100644 arch/arm/mach-omap2/omap3/sys_info.c (limited to 'arch/arm/mach-omap2/omap3/sys_info.c') diff --git a/arch/arm/mach-omap2/omap3/sys_info.c b/arch/arm/mach-omap2/omap3/sys_info.c new file mode 100644 index 0000000000..6818fab253 --- /dev/null +++ b/arch/arm/mach-omap2/omap3/sys_info.c @@ -0,0 +1,343 @@ +/* + * (C) Copyright 2008 + * Texas Instruments, + * + * Author : + * Manikandan Pillai + * + * Derived from Beagle Board and 3430 SDP code by + * Richard Woodruff + * Syed Mohammed Khasim + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include /* get mem tables */ +#include +#include + +#include +#include + +extern omap3_sysinfo sysinfo; +static struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE; + +#ifdef CONFIG_DISPLAY_CPUINFO +static char *rev_s[CPU_3XX_MAX_REV] = { + "1.0", + "2.0", + "2.1", + "3.0", + "3.1", + "UNKNOWN", + "UNKNOWN", + "3.1.2"}; + +/* this is the revision table for 37xx CPUs */ +static char *rev_s_37xx[CPU_37XX_MAX_REV] = { + "1.0", + "1.1", + "1.2"}; +#endif /* CONFIG_DISPLAY_CPUINFO */ + +void omap_die_id(unsigned int *die_id) +{ + struct ctrl_id *id_base = (struct ctrl_id *)OMAP34XX_ID_L4_IO_BASE; + + die_id[0] = readl(&id_base->die_id_0); + die_id[1] = readl(&id_base->die_id_1); + die_id[2] = readl(&id_base->die_id_2); + die_id[3] = readl(&id_base->die_id_3); +} + +/****************************************** + * get_cpu_type(void) - extract cpu info + ******************************************/ +u32 get_cpu_type(void) +{ + return readl(&ctrl_base->ctrl_omap_stat); +} + +/****************************************** + * get_cpu_id(void) - extract cpu id + * returns 0 for ES1.0, cpuid otherwise + ******************************************/ +u32 get_cpu_id(void) +{ + struct ctrl_id *id_base; + u32 cpuid = 0; + + /* + * On ES1.0 the IDCODE register is not exposed on L4 + * so using CPU ID to differentiate between ES1.0 and > ES1.0. + */ + __asm__ __volatile__("mrc p15, 0, %0, c0, c0, 0":"=r"(cpuid)); + if ((cpuid & 0xf) == 0x0) { + return 0; + } else { + /* Decode the IDs on > ES1.0 */ + id_base = (struct ctrl_id *) OMAP34XX_ID_L4_IO_BASE; + + cpuid = readl(&id_base->idcode); + } + + return cpuid; +} + +/****************************************** + * get_cpu_family(void) - extract cpu info + ******************************************/ +u32 get_cpu_family(void) +{ + u16 hawkeye; + u32 cpu_family; + u32 cpuid = get_cpu_id(); + + if (cpuid == 0) + return CPU_OMAP34XX; + + hawkeye = (cpuid >> HAWKEYE_SHIFT) & 0xffff; + switch (hawkeye) { + case HAWKEYE_OMAP34XX: + cpu_family = CPU_OMAP34XX; + break; + case HAWKEYE_AM35XX: + cpu_family = CPU_AM35XX; + break; + case HAWKEYE_OMAP36XX: + cpu_family = CPU_OMAP36XX; + break; + default: + cpu_family = CPU_OMAP34XX; + } + + return cpu_family; +} + +/****************************************** + * get_cpu_rev(void) - extract version info + ******************************************/ +u32 get_cpu_rev(void) +{ + u32 cpuid = get_cpu_id(); + + if (cpuid == 0) + return CPU_3XX_ES10; + else + return (cpuid >> CPU_3XX_ID_SHIFT) & 0xf; +} + +/***************************************************************** + * get_sku_id(void) - read sku_id to get info on max clock rate + *****************************************************************/ +u32 get_sku_id(void) +{ + struct ctrl_id *id_base = (struct ctrl_id *)OMAP34XX_ID_L4_IO_BASE; + return readl(&id_base->sku_id) & SKUID_CLK_MASK; +} + +/*************************************************************************** + * get_gpmc0_base() - Return current address hardware will be + * fetching from. The below effectively gives what is correct, its a bit + * mis-leading compared to the TRM. For the most general case the mask + * needs to be also taken into account this does work in practice. + * - for u-boot we currently map: + * -- 0 to nothing, + * -- 4 to flash + * -- 8 to enent + * -- c to wifi + ****************************************************************************/ +u32 get_gpmc0_base(void) +{ + u32 b; + + b = readl(&gpmc_cfg->cs[0].config7); + b &= 0x1F; /* keep base [5:0] */ + b = b << 24; /* ret 0x0b000000 */ + return b; +} + +/******************************************************************* + * get_gpmc0_width() - See if bus is in x8 or x16 (mainly for nand) + *******************************************************************/ +u32 get_gpmc0_width(void) +{ + return WIDTH_16BIT; +} + +/************************************************************************* + * get_board_rev() - setup to pass kernel board revision information + * returns:(bit[0-3] sub version, higher bit[7-4] is higher version) + *************************************************************************/ +#ifdef CONFIG_REVISION_TAG +u32 __weak get_board_rev(void) +{ + return 0x20; +} +#endif + +/******************************************************** + * get_base(); get upper addr of current execution + *******************************************************/ +static u32 get_base(void) +{ + u32 val; + + __asm__ __volatile__("mov %0, pc \n":"=r"(val)::"memory"); + val &= 0xF0000000; + val >>= 28; + return val; +} + +/******************************************************** + * is_running_in_flash() - tell if currently running in + * FLASH. + *******************************************************/ +u32 is_running_in_flash(void) +{ + if (get_base() < 4) + return 1; /* in FLASH */ + + return 0; /* running in SRAM or SDRAM */ +} + +/******************************************************** + * is_running_in_sram() - tell if currently running in + * SRAM. + *******************************************************/ +u32 is_running_in_sram(void) +{ + if (get_base() == 4) + return 1; /* in SRAM */ + + return 0; /* running in FLASH or SDRAM */ +} + +/******************************************************** + * is_running_in_sdram() - tell if currently running in + * SDRAM. + *******************************************************/ +u32 is_running_in_sdram(void) +{ + if (get_base() > 4) + return 1; /* in SDRAM */ + + return 0; /* running in SRAM or FLASH */ +} + +/*************************************************************** + * get_boot_type() - Is this an XIP type device or a stream one + * bits 4-0 specify type. Bit 5 says mem/perif + ***************************************************************/ +u32 get_boot_type(void) +{ + return (readl(&ctrl_base->status) & SYSBOOT_MASK); +} + +/************************************************************* + * get_device_type(): tell if GP/HS/EMU/TST + *************************************************************/ +u32 get_device_type(void) +{ + return ((readl(&ctrl_base->status) & (DEVICE_MASK)) >> 8); +} + +#ifdef CONFIG_DISPLAY_CPUINFO +/** + * Print CPU information + */ +int print_cpuinfo (void) +{ + char *cpu_family_s, *cpu_s, *sec_s, *max_clk; + + switch (get_cpu_family()) { + case CPU_OMAP34XX: + cpu_family_s = "OMAP"; + switch (get_cpu_type()) { + case OMAP3503: + cpu_s = "3503"; + break; + case OMAP3515: + cpu_s = "3515"; + break; + case OMAP3525: + cpu_s = "3525"; + break; + case OMAP3530: + cpu_s = "3530"; + break; + default: + cpu_s = "35XX"; + break; + } + if ((get_cpu_rev() >= CPU_3XX_ES31) && + (get_sku_id() == SKUID_CLK_720MHZ)) + max_clk = "720 MHz"; + else + max_clk = "600 MHz"; + + break; + case CPU_AM35XX: + cpu_family_s = "AM"; + switch (get_cpu_type()) { + case AM3505: + cpu_s = "3505"; + break; + case AM3517: + cpu_s = "3517"; + break; + default: + cpu_s = "35XX"; + break; + } + max_clk = "600 Mhz"; + break; + case CPU_OMAP36XX: + cpu_family_s = "OMAP"; + switch (get_cpu_type()) { + case OMAP3730: + cpu_s = "3630/3730"; + break; + default: + cpu_s = "36XX/37XX"; + break; + } + max_clk = "1 Ghz"; + break; + default: + cpu_family_s = "OMAP"; + cpu_s = "35XX"; + max_clk = "600 Mhz"; + } + + switch (get_device_type()) { + case TST_DEVICE: + sec_s = "TST"; + break; + case EMU_DEVICE: + sec_s = "EMU"; + break; + case HS_DEVICE: + sec_s = "HS"; + break; + case GP_DEVICE: + sec_s = "GP"; + break; + default: + sec_s = "?"; + } + + if (CPU_OMAP36XX == get_cpu_family()) + printf("%s%s-%s ES%s, CPU-OPP2, L3-200MHz, Max CPU Clock %s\n", + cpu_family_s, cpu_s, sec_s, + rev_s_37xx[get_cpu_rev()], max_clk); + else + printf("%s%s-%s ES%s, CPU-OPP2, L3-165MHz, Max CPU Clock %s\n", + cpu_family_s, cpu_s, sec_s, + rev_s[get_cpu_rev()], max_clk); + + return 0; +} +#endif /* CONFIG_DISPLAY_CPUINFO */ -- cgit