include/hw/misc/aspeed_scu.h - qemu - Git at Google

 /*
  * ASPEED System Control Unit
  *
  * Andrew Jeffery <andrew@aj.id.au>
  *
  * 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"
 #include "qom/object.h"

 #define TYPE_ASPEED_SCU "aspeed.scu"
 OBJECT_DECLARE_TYPE(AspeedSCUState, AspeedSCUClass, ASPEED_SCU)
 #define TYPE_ASPEED_2400_SCU TYPE_ASPEED_SCU "-ast2400"
 #define TYPE_ASPEED_2500_SCU TYPE_ASPEED_SCU "-ast2500"
 #define TYPE_ASPEED_2600_SCU TYPE_ASPEED_SCU "-ast2600"
 #define TYPE_ASPEED_1030_SCU TYPE_ASPEED_SCU "-ast1030"

 #define ASPEED_SCU_NR_REGS (0x1A8 >> 2)
 #define ASPEED_AST2600_SCU_NR_REGS (0xE20 >> 2)

 struct AspeedSCUState {
     /*< private >*/
     SysBusDevice parent_obj;

     /*< public >*/
     MemoryRegion iomem;

     uint32_t regs[ASPEED_AST2600_SCU_NR_REGS];
     uint32_t silicon_rev;
     uint32_t hw_strap1;
     uint32_t hw_strap2;
     uint32_t hw_prot_key;
 };

 #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 AST2600_A0_SILICON_REV   0x05000303U
 #define AST2600_A1_SILICON_REV   0x05010303U
 #define AST2600_A2_SILICON_REV   0x05020303U
 #define AST2600_A3_SILICON_REV   0x05030303U
 #define AST1030_A0_SILICON_REV   0x80000000U
 #define AST1030_A1_SILICON_REV   0x80010000U

 #define ASPEED_IS_AST2500(si_rev)     ((((si_rev) >> 24) & 0xff) == 0x04)

 bool is_supported_silicon_rev(uint32_t silicon_rev);


 struct AspeedSCUClass {
     SysBusDeviceClass parent_class;

     const uint32_t *resets;
     uint32_t (*calc_hpll)(AspeedSCUState *s, uint32_t hpll_reg);
     uint32_t (*get_apb)(AspeedSCUState *s);
     uint32_t apb_divider;
     uint32_t nr_regs;
     bool clkin_25Mhz;
     const MemoryRegionOps *ops;
 };

 #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_25HZ_CLOCK_MODE       (0x1 << 23)

 #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)

 /*
  * SCU200   H-PLL Parameter Register (for Aspeed AST2600 SOC)
  *
  *  28:26  H-PLL Parameters
  *  25     Enable H-PLL reset
  *  24     Enable H-PLL bypass mode
  *  23     Turn off H-PLL
  *  22:19  H-PLL Post Divider (P)
  *  18:13  H-PLL Numerator (M)
  *  12:0   H-PLL Denumerator (N)
  *
  *  (Output frequency) = CLKIN(25MHz) * [(M+1) / (N+1)] / (P+1)
  *
  * The default frequency is 1200Mhz when CLKIN = 25MHz
  */
 #define SCU_AST2600_H_PLL_BYPASS_EN                        (0x1 << 24)
 #define SCU_AST2600_H_PLL_OFF                              (0x1 << 23)

 /*
  * SCU310   Clock Selection Register Set 4 (for Aspeed AST1030 SOC)
  *
  *  31     I3C Clock Source selection
  *  30:28  I3C clock divider selection
  *  26:24  MAC AHB clock divider selection
  *  22:20  RGMII 125MHz clock divider ration
  *  19:16  RGMII 50MHz clock divider ration
  *  15     LHCLK clock generation/output enable control
  *  14:12  LHCLK divider selection
  *  11:8   APB Bus PCLK divider selection
  *  7      Select PECI clock source
  *  6      Select UART debug port clock source
  *  5      Select UART6 clock source
  *  4      Select UART5 clock source
  *  3      Select UART4 clock source
  *  2      Select UART3 clock source
  *  1      Select UART2 clock source
  *  0      Select UART1 clock source
  */
 #define SCU_AST1030_CLK_GET_PCLK_DIV(x)                    (((x) >> 8) & 0xf)

 #endif /* ASPEED_SCU_H */
	/*
	* ASPEED System Control Unit
	*
	* Andrew Jeffery <andrew@aj.id.au>
	*
	* 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"
	#include "qom/object.h"

	#define TYPE_ASPEED_SCU "aspeed.scu"
	OBJECT_DECLARE_TYPE(AspeedSCUState, AspeedSCUClass, ASPEED_SCU)
	#define TYPE_ASPEED_2400_SCU TYPE_ASPEED_SCU "-ast2400"
	#define TYPE_ASPEED_2500_SCU TYPE_ASPEED_SCU "-ast2500"
	#define TYPE_ASPEED_2600_SCU TYPE_ASPEED_SCU "-ast2600"
	#define TYPE_ASPEED_1030_SCU TYPE_ASPEED_SCU "-ast1030"

	#define ASPEED_SCU_NR_REGS (0x1A8 >> 2)
	#define ASPEED_AST2600_SCU_NR_REGS (0xE20 >> 2)

	struct AspeedSCUState {
	/< private >/
	SysBusDevice parent_obj;

	/< public >/
	MemoryRegion iomem;

	uint32_t regs[ASPEED_AST2600_SCU_NR_REGS];
	uint32_t silicon_rev;
	uint32_t hw_strap1;
	uint32_t hw_strap2;
	uint32_t hw_prot_key;
	};

	#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 AST2600_A0_SILICON_REV 0x05000303U
	#define AST2600_A1_SILICON_REV 0x05010303U
	#define AST2600_A2_SILICON_REV 0x05020303U
	#define AST2600_A3_SILICON_REV 0x05030303U
	#define AST1030_A0_SILICON_REV 0x80000000U
	#define AST1030_A1_SILICON_REV 0x80010000U

	#define ASPEED_IS_AST2500(si_rev) ((((si_rev) >> 24) & 0xff) == 0x04)

	bool is_supported_silicon_rev(uint32_t silicon_rev);


	struct AspeedSCUClass {
	SysBusDeviceClass parent_class;

	const uint32_t *resets;
	uint32_t (calc_hpll)(AspeedSCUState s, uint32_t hpll_reg);
	uint32_t (get_apb)(AspeedSCUState s);
	uint32_t apb_divider;
	uint32_t nr_regs;
	bool clkin_25Mhz;
	const MemoryRegionOps *ops;
	};

	#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_25HZ_CLOCK_MODE (0x1 << 23)

	#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)

	/*
	* SCU200 H-PLL Parameter Register (for Aspeed AST2600 SOC)
	*
	* 28:26 H-PLL Parameters
	* 25 Enable H-PLL reset
	* 24 Enable H-PLL bypass mode
	* 23 Turn off H-PLL
	* 22:19 H-PLL Post Divider (P)
	* 18:13 H-PLL Numerator (M)
	* 12:0 H-PLL Denumerator (N)
	*
	* (Output frequency) = CLKIN(25MHz) * [(M+1) / (N+1)] / (P+1)
	*
	* The default frequency is 1200Mhz when CLKIN = 25MHz
	*/
	#define SCU_AST2600_H_PLL_BYPASS_EN (0x1 << 24)
	#define SCU_AST2600_H_PLL_OFF (0x1 << 23)

	/*
	* SCU310 Clock Selection Register Set 4 (for Aspeed AST1030 SOC)
	*
	* 31 I3C Clock Source selection
	* 30:28 I3C clock divider selection
	* 26:24 MAC AHB clock divider selection
	* 22:20 RGMII 125MHz clock divider ration
	* 19:16 RGMII 50MHz clock divider ration
	* 15 LHCLK clock generation/output enable control
	* 14:12 LHCLK divider selection
	* 11:8 APB Bus PCLK divider selection
	* 7 Select PECI clock source
	* 6 Select UART debug port clock source
	* 5 Select UART6 clock source
	* 4 Select UART5 clock source
	* 3 Select UART4 clock source
	* 2 Select UART3 clock source
	* 1 Select UART2 clock source
	* 0 Select UART1 clock source
	*/
	#define SCU_AST1030_CLK_GET_PCLK_DIV(x) (((x) >> 8) & 0xf)

	#endif /* ASPEED_SCU_H */