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/*
* 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"
#define TYPE_ASPEED_SCU "aspeed.scu"
#define ASPEED_SCU(obj) OBJECT_CHECK(AspeedSCUState, (obj), TYPE_ASPEED_SCU)
#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;
} 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
extern bool is_supported_silicon_rev(uint32_t silicon_rev);
/*
* 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
*/
/* 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 AST2400_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_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
/*
* 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 */
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