/* * ASPEED System Control Unit * * Andrew Jeffery * * Copyright 2016 IBM Corp. * * This code is licensed under the GPL version 2 or later. See * the COPYING file in the top-level directory. */ #ifndef ASPEED_SCU_H #define ASPEED_SCU_H #include "hw/sysbus.h" #define TYPE_ASPEED_SCU "aspeed.scu" #define ASPEED_SCU(obj) OBJECT_CHECK(AspeedSCUState, (obj), TYPE_ASPEED_SCU) #define TYPE_ASPEED_2400_SCU TYPE_ASPEED_SCU "-ast2400" #define TYPE_ASPEED_2500_SCU TYPE_ASPEED_SCU "-ast2500" #define ASPEED_SCU_NR_REGS (0x1A8 >> 2) typedef struct AspeedSCUState { /*< private >*/ SysBusDevice parent_obj; /*< public >*/ MemoryRegion iomem; uint32_t regs[ASPEED_SCU_NR_REGS]; uint32_t silicon_rev; uint32_t hw_strap1; uint32_t hw_strap2; uint32_t hw_prot_key; } AspeedSCUState; #define AST2400_A0_SILICON_REV 0x02000303U #define AST2400_A1_SILICON_REV 0x02010303U #define AST2500_A0_SILICON_REV 0x04000303U #define AST2500_A1_SILICON_REV 0x04010303U #define ASPEED_IS_AST2500(si_rev) ((((si_rev) >> 24) & 0xff) == 0x04) extern bool is_supported_silicon_rev(uint32_t silicon_rev); #define ASPEED_SCU_CLASS(klass) \ OBJECT_CLASS_CHECK(AspeedSCUClass, (klass), TYPE_ASPEED_SCU) #define ASPEED_SCU_GET_CLASS(obj) \ OBJECT_GET_CLASS(AspeedSCUClass, (obj), TYPE_ASPEED_SCU) typedef struct AspeedSCUClass { SysBusDeviceClass parent_class; const uint32_t *resets; uint32_t (*calc_hpll)(AspeedSCUState *s, uint32_t hpll_reg); uint32_t apb_divider; } AspeedSCUClass; #define ASPEED_SCU_PROT_KEY 0x1688A8A8 uint32_t aspeed_scu_get_apb_freq(AspeedSCUState *s); /* * Extracted from Aspeed SDK v00.03.21. Fixes and extra definitions * were added. * * Original header file : * arch/arm/mach-aspeed/include/mach/regs-scu.h * * Copyright (C) 2012-2020 ASPEED Technology Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * History : * 1. 2012/12/29 Ryan Chen Create */ /* SCU08 Clock Selection Register * * 31 Enable Video Engine clock dynamic slow down * 30:28 Video Engine clock slow down setting * 27 2D Engine GCLK clock source selection * 26 2D Engine GCLK clock throttling enable * 25:23 APB PCLK divider selection * 22:20 LPC Host LHCLK divider selection * 19 LPC Host LHCLK clock generation/output enable control * 18:16 MAC AHB bus clock divider selection * 15 SD/SDIO clock running enable * 14:12 SD/SDIO divider selection * 11 Reserved * 10:8 Video port output clock delay control bit * 7 ARM CPU/AHB clock slow down enable * 6:4 ARM CPU/AHB clock slow down setting * 3:2 ECLK clock source selection * 1 CPU/AHB clock slow down idle timer * 0 CPU/AHB clock dynamic slow down enable (defined in bit[6:4]) */ #define SCU_CLK_GET_PCLK_DIV(x) (((x) >> 23) & 0x7) /* SCU24 H-PLL Parameter Register (for Aspeed AST2400 SOC) * * 18 H-PLL parameter selection * 0: Select H-PLL by strapping resistors * 1: Select H-PLL by the programmed registers (SCU24[17:0]) * 17 Enable H-PLL bypass mode * 16 Turn off H-PLL * 10:5 H-PLL Numerator * 4 H-PLL Output Divider * 3:0 H-PLL Denumerator * * (Output frequency) = 24MHz * (2-OD) * [(Numerator+2) / (Denumerator+1)] */ #define SCU_AST2400_H_PLL_PROGRAMMED (0x1 << 18) #define SCU_AST2400_H_PLL_BYPASS_EN (0x1 << 17) #define SCU_AST2400_H_PLL_OFF (0x1 << 16) /* SCU24 H-PLL Parameter Register (for Aspeed AST2500 SOC) * * 21 Enable H-PLL reset * 20 Enable H-PLL bypass mode * 19 Turn off H-PLL * 18:13 H-PLL Post Divider * 12:5 H-PLL Numerator (M) * 4:0 H-PLL Denumerator (N) * * (Output frequency) = CLKIN(24MHz) * [(M+1) / (N+1)] / (P+1) * * The default frequency is 792Mhz when CLKIN = 24MHz */ #define SCU_H_PLL_BYPASS_EN (0x1 << 20) #define SCU_H_PLL_OFF (0x1 << 19) /* SCU70 Hardware Strapping Register definition (for Aspeed AST2400 SOC) * * 31:29 Software defined strapping registers * 28:27 DRAM size setting (for VGA driver use) * 26:24 DRAM configuration setting * 23 Enable 25 MHz reference clock input * 22 Enable GPIOE pass-through mode * 21 Enable GPIOD pass-through mode * 20 Disable LPC to decode SuperIO 0x2E/0x4E address * 19 Disable ACPI function * 23,18 Clock source selection * 17 Enable BMC 2nd boot watchdog timer * 16 SuperIO configuration address selection * 15 VGA Class Code selection * 14 Enable LPC dedicated reset pin function * 13:12 SPI mode selection * 11:10 CPU/AHB clock frequency ratio selection * 9:8 H-PLL default clock frequency selection * 7 Define MAC#2 interface * 6 Define MAC#1 interface * 5 Enable VGA BIOS ROM * 4 Boot flash memory extended option * 3:2 VGA memory size selection * 1:0 BMC CPU boot code selection */ #define SCU_AST2400_HW_STRAP_SW_DEFINE(x) ((x) << 29) #define SCU_AST2400_HW_STRAP_SW_DEFINE_MASK (0x7 << 29) #define SCU_AST2400_HW_STRAP_DRAM_SIZE(x) ((x) << 27) #define SCU_AST2400_HW_STRAP_DRAM_SIZE_MASK (0x3 << 27) #define DRAM_SIZE_64MB 0 #define DRAM_SIZE_128MB 1 #define DRAM_SIZE_256MB 2 #define DRAM_SIZE_512MB 3 #define SCU_AST2400_HW_STRAP_DRAM_CONFIG(x) ((x) << 24) #define SCU_AST2400_HW_STRAP_DRAM_CONFIG_MASK (0x7 << 24) #define SCU_HW_STRAP_GPIOE_PT_EN (0x1 << 22) #define SCU_HW_STRAP_GPIOD_PT_EN (0x1 << 21) #define SCU_HW_STRAP_LPC_DEC_SUPER_IO (0x1 << 20) #define SCU_AST2400_HW_STRAP_ACPI_DIS (0x1 << 19) /* bit 23, 18 [1,0] */ #define SCU_AST2400_HW_STRAP_SET_CLK_SOURCE(x) (((((x) & 0x3) >> 1) << 23) \ | (((x) & 0x1) << 18)) #define SCU_AST2400_HW_STRAP_GET_CLK_SOURCE(x) (((((x) >> 23) & 0x1) << 1) \ | (((x) >> 18) & 0x1)) #define SCU_AST2400_HW_STRAP_CLK_SOURCE_MASK ((0x1 << 23) | (0x1 << 18)) #define SCU_HW_STRAP_CLK_25M_IN (0x1 << 23) #define AST2400_CLK_24M_IN 0 #define AST2400_CLK_48M_IN 1 #define AST2400_CLK_25M_IN_24M_USB_CKI 2 #define AST2400_CLK_25M_IN_48M_USB_CKI 3 #define SCU_HW_STRAP_CLK_48M_IN (0x1 << 18) #define SCU_HW_STRAP_2ND_BOOT_WDT (0x1 << 17) #define SCU_HW_STRAP_SUPER_IO_CONFIG (0x1 << 16) #define SCU_HW_STRAP_VGA_CLASS_CODE (0x1 << 15) #define SCU_HW_STRAP_LPC_RESET_PIN (0x1 << 14) #define SCU_HW_STRAP_SPI_MODE(x) ((x) << 12) #define SCU_HW_STRAP_SPI_MODE_MASK (0x3 << 12) #define SCU_HW_STRAP_SPI_DIS 0 #define SCU_HW_STRAP_SPI_MASTER 1 #define SCU_HW_STRAP_SPI_M_S_EN 2 #define SCU_HW_STRAP_SPI_PASS_THROUGH 3 #define SCU_AST2400_HW_STRAP_SET_CPU_AHB_RATIO(x) ((x) << 10) #define SCU_AST2400_HW_STRAP_GET_CPU_AHB_RATIO(x) (((x) >> 10) & 3) #define SCU_AST2400_HW_STRAP_CPU_AHB_RATIO_MASK (0x3 << 10) #define AST2400_CPU_AHB_RATIO_1_1 0 #define AST2400_CPU_AHB_RATIO_2_1 1 #define AST2400_CPU_AHB_RATIO_4_1 2 #define AST2400_CPU_AHB_RATIO_3_1 3 #define SCU_AST2400_HW_STRAP_GET_H_PLL_CLK(x) (((x) >> 8) & 0x3) #define SCU_AST2400_HW_STRAP_H_PLL_CLK_MASK (0x3 << 8) #define AST2400_CPU_384MHZ 0 #define AST2400_CPU_360MHZ 1 #define AST2400_CPU_336MHZ 2 #define AST2400_CPU_408MHZ 3 #define SCU_HW_STRAP_MAC1_RGMII (0x1 << 7) #define SCU_HW_STRAP_MAC0_RGMII (0x1 << 6) #define SCU_HW_STRAP_VGA_BIOS_ROM (0x1 << 5) #define SCU_HW_STRAP_SPI_WIDTH (0x1 << 4) #define SCU_HW_STRAP_VGA_SIZE_GET(x) (((x) >> 2) & 0x3) #define SCU_HW_STRAP_VGA_MASK (0x3 << 2) #define SCU_HW_STRAP_VGA_SIZE_SET(x) ((x) << 2) #define VGA_8M_DRAM 0 #define VGA_16M_DRAM 1 #define VGA_32M_DRAM 2 #define VGA_64M_DRAM 3 #define SCU_AST2400_HW_STRAP_BOOT_MODE(x) (x) #define AST2400_NOR_BOOT 0 #define AST2400_NAND_BOOT 1 #define AST2400_SPI_BOOT 2 #define AST2400_DIS_BOOT 3 /* * SCU70 Hardware strapping register definition (for Aspeed AST2500 * SoC and higher) * * 31 Enable SPI Flash Strap Auto Fetch Mode * 30 Enable GPIO Strap Mode * 29 Select UART Debug Port * 28 Reserved (1) * 27 Enable fast reset mode for ARM ICE debugger * 26 Enable eSPI flash mode * 25 Enable eSPI mode * 24 Select DDR4 SDRAM * 23 Select 25 MHz reference clock input mode * 22 Enable GPIOE pass-through mode * 21 Enable GPIOD pass-through mode * 20 Disable LPC to decode SuperIO 0x2E/0x4E address * 19 Enable ACPI function * 18 Select USBCKI input frequency * 17 Enable BMC 2nd boot watchdog timer * 16 SuperIO configuration address selection * 15 VGA Class Code selection * 14 Select dedicated LPC reset input * 13:12 SPI mode selection * 11:9 AXI/AHB clock frequency ratio selection * 8 Reserved (0) * 7 Define MAC#2 interface * 6 Define MAC#1 interface * 5 Enable dedicated VGA BIOS ROM * 4 Reserved (0) * 3:2 VGA memory size selection * 1 Reserved (1) * 0 Disable CPU boot */ #define SCU_AST2500_HW_STRAP_SPI_AUTOFETCH_ENABLE (0x1 << 31) #define SCU_AST2500_HW_STRAP_GPIO_STRAP_ENABLE (0x1 << 30) #define SCU_AST2500_HW_STRAP_UART_DEBUG (0x1 << 29) #define UART_DEBUG_UART1 0 #define UART_DEBUG_UART5 1 #define SCU_AST2500_HW_STRAP_RESERVED28 (0x1 << 28) #define SCU_AST2500_HW_STRAP_FAST_RESET_DBG (0x1 << 27) #define SCU_AST2500_HW_STRAP_ESPI_FLASH_ENABLE (0x1 << 26) #define SCU_AST2500_HW_STRAP_ESPI_ENABLE (0x1 << 25) #define SCU_AST2500_HW_STRAP_DDR4_ENABLE (0x1 << 24) #define SCU_AST2500_HW_STRAP_ACPI_ENABLE (0x1 << 19) #define SCU_AST2500_HW_STRAP_USBCKI_FREQ (0x1 << 18) #define USBCKI_FREQ_24MHZ 0 #define USBCKI_FREQ_28MHZ 1 #define SCU_AST2500_HW_STRAP_SET_AXI_AHB_RATIO(x) ((x) << 9) #define SCU_AST2500_HW_STRAP_GET_AXI_AHB_RATIO(x) (((x) >> 9) & 7) #define SCU_AST2500_HW_STRAP_CPU_AXI_RATIO_MASK (0x7 << 9) #define AXI_AHB_RATIO_UNDEFINED 0 #define AXI_AHB_RATIO_2_1 1 #define AXI_AHB_RATIO_3_1 2 #define AXI_AHB_RATIO_4_1 3 #define AXI_AHB_RATIO_5_1 4 #define AXI_AHB_RATIO_6_1 5 #define AXI_AHB_RATIO_7_1 6 #define AXI_AHB_RATIO_8_1 7 #define SCU_AST2500_HW_STRAP_RESERVED1 (0x1 << 1) #define SCU_AST2500_HW_STRAP_DIS_BOOT (0x1 << 0) #define AST2500_HW_STRAP1_DEFAULTS ( \ SCU_AST2500_HW_STRAP_RESERVED28 | \ SCU_HW_STRAP_2ND_BOOT_WDT | \ SCU_HW_STRAP_VGA_CLASS_CODE | \ SCU_HW_STRAP_LPC_RESET_PIN | \ SCU_AST2500_HW_STRAP_SET_AXI_AHB_RATIO(AXI_AHB_RATIO_2_1) | \ SCU_HW_STRAP_VGA_SIZE_SET(VGA_16M_DRAM) | \ SCU_AST2500_HW_STRAP_RESERVED1) #endif /* ASPEED_SCU_H */