[thirdparty/u-boot.git] / include / configs / bcmstb.h

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * (C) Copyright 2018  Cisco Systems, Inc.
 *
 * Author: Thomas Fitzsimmons <fitzsim@fitzsim.org>
 *
 * Configuration settings for the Broadcom BCMSTB SoC family.
 */

#ifndef __BCMSTB_H
#define __BCMSTB_H

#include "version.h"
#include <linux/sizes.h>

#ifndef __ASSEMBLY__

#include <linux/types.h>

struct bcmstb_boot_parameters {
	u32 r0;
	u32 r1;
	u32 r2;
	u32 r3;
	u32 sp;
	u32 lr;
};

extern struct bcmstb_boot_parameters bcmstb_boot_parameters;

extern phys_addr_t prior_stage_fdt_address;

#endif /* __ASSEMBLY__ */

/*
 * CPU configuration.
 */
#define CONFIG_SKIP_LOWLEVEL_INIT

/*
 * Memory configuration.
 *
 * The prior stage BOLT bootloader sets up memory for us.
 *
 * An example boot memory layout after loading everything is:
 *
 *	 0x0000 8000	vmlinux.bin.gz
 *	       :	[~31 MiB uncompressed max]
 *	 0x01ef f000	FIT containing signed public key
 *	       :	[~2 KiB in size]
 *	 0x01f0 0000	DTB copied from prior-stage-provided region
 *	       :	[~1 MiB max]
 *	 0x0200 0000	FIT containing ramdisk and device tree
 *             :	  initramfs.cpio.gz
 *	       :	  [~208 MiB uncompressed max, to CMA/bmem low address]
 *	       :	  [~80 MiB compressed max, to PSB low address]
 *             :	  device tree binary
 *             :	  [~60 KiB]
 *	 0x0700 0000	Prior stage bootloader (PSB)
 *	       :
 *	 0x0761 7000	Prior-stage-provided device tree binary (DTB)
 *	       :	[~40 KiB in size]
 *	 0x0f00 0000	Contiguous memory allocator (CMA/bmem) low address
 *	       :
 *	 0x8010 0000	U-Boot code at ELF load address
 *	       :	[~500 KiB in size, stripped]
 *	 0xc000 0000	Top of RAM
 *
 * Setting gd->relocaddr to CONFIG_SYS_TEXT_BASE in dram_init_banksize
 * prevents U-Boot from relocating itself when it is run as an ELF
 * program by the prior stage bootloader.
 *
 * We want to keep the ramdisk and FDT in the FIT image in-place, to
 * accommodate stblinux's bmem and CMA regions.  To accomplish this,
 * we set initrd_high and fdt_high to 0xffffffff, and the load and
 * entry addresses of the FIT ramdisk entry to 0x0.
 *
 * Overwriting the prior stage bootloader causes memory instability,
 * so the compressed initramfs needs to fit between the load address
 * and the PSB low address.  In BOLT's default configuration this
 * limits the compressed size of the initramfs to approximately 80
 * MiB.  However, BOLT can be configured to allow loading larger
 * initramfs images, in which case this limitation is eliminated.
 */
#define CONFIG_SYS_SDRAM_BASE		0x00000000
#define CONFIG_SYS_INIT_RAM_SIZE	0x100000
#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_INIT_RAM_ADDR +	\
					 CONFIG_SYS_INIT_RAM_SIZE -	\
					 GENERATED_GBL_DATA_SIZE)
#define CONFIG_SYS_LOAD_ADDR		0x2000000

/*
 * CONFIG_SYS_LOAD_ADDR - 1 MiB.
 */
#define CONFIG_SYS_FDT_SAVE_ADDRESS	0x1f00000
#define CONFIG_SYS_CBSIZE		512
#define CONFIG_SYS_MAXARGS		32

/*
 * Large kernel image bootm configuration.
 */
#define CONFIG_SYS_BOOTM_LEN		SZ_64M

/*
 * NS16550 configuration.
 */
#define V_NS16550_CLK			81000000

#define CONFIG_SYS_NS16550
#define CONFIG_SYS_NS16550_SERIAL
#define CONFIG_SYS_NS16550_REG_SIZE	(-4)
#define CONFIG_SYS_NS16550_CLK		V_NS16550_CLK

/*
 * Serial console configuration.
 */
#define CONFIG_BAUDRATE			115200
#define CONFIG_SYS_BAUDRATE_TABLE	{4800, 9600, 19200, 38400, 57600, \
					 115200}

/*
 * Informational display configuration.
 */
#define CONFIG_REVISION_TAG

/*
 * Command configuration.
 */
#define CONFIG_CMD_ASKENV
#define CONFIG_CMD_CACHE
#define CONFIG_CMD_EXT2
#define CONFIG_CMD_MMC

/*
 * Flash configuration.
 */
#define CONFIG_ST_SMI
#define CONFIG_SPI_FLASH_STMICRO
#define CONFIG_SPI_FLASH_MACRONIX

/*
 * Filesystem configuration.
 */
#define CONFIG_DOS_PARTITION
#define CONFIG_CMD_EXT4
#define CONFIG_FS_EXT4
#define CONFIG_CMD_FS_GENERIC

/*
 * Environment configuration.
 */
#define CONFIG_SYS_REDUNDAND_ENVIRONMENT
#define CONFIG_ENV_SIZE			(64 << 10) /* 64 KiB */
#define CONFIG_ENV_OFFSET_REDUND	(CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)
#define CONFIG_ENV_OVERWRITE

/*
 * Save the prior stage provided DTB.
 */
/*
 * Enable in-place RFS with this initrd_high setting.
 */
#define CONFIG_EXTRA_ENV_SETTINGS					\
	"fdtsaveaddr=" __stringify(CONFIG_SYS_FDT_SAVE_ADDRESS) "\0"	\
	"initrd_high=0xffffffff\0"					\
	"fdt_high=0xffffffff\0"

/*
 * Set fdtaddr to prior stage-provided DTB in board_late_init, when
 * writeable environment is available.
 */
#define CONFIG_BOARD_LATE_INIT

#endif /* __BCMSTB_H */
Commit	Line	Data
894c3ad2 TF	1	/* SPDX-License-Identifier: GPL-2.0+ */
	2	/*
	3	* (C) Copyright 2018 Cisco Systems, Inc.
	4	*
	5	* Author: Thomas Fitzsimmons <fitzsim@fitzsim.org>
	6	*
	7	* Configuration settings for the Broadcom BCMSTB SoC family.
	8	*/
	9
	10	#ifndef __BCMSTB_H
	11	#define __BCMSTB_H
	12
	13	#include "version.h"
	14	#include <linux/sizes.h>
dc7685e2 TF	15
	16	#ifndef __ASSEMBLY__
	17
	18	#include <linux/types.h>
	19
	20	struct bcmstb_boot_parameters {
	21	u32 r0;
	22	u32 r1;
	23	u32 r2;
	24	u32 r3;
	25	u32 sp;
	26	u32 lr;
	27	};
	28
	29	extern struct bcmstb_boot_parameters bcmstb_boot_parameters;
	30
	31	extern phys_addr_t prior_stage_fdt_address;
	32
	33	#endif /* __ASSEMBLY__ */
894c3ad2	34
894c3ad2 TF	35	/*
	36	* CPU configuration.
	37	*/
	38	#define CONFIG_SKIP_LOWLEVEL_INIT
	39
	40	/*
	41	* Memory configuration.
	42	*
	43	* The prior stage BOLT bootloader sets up memory for us.
	44	*
	45	* An example boot memory layout after loading everything is:
	46	*
	47	* 0x0000 8000 vmlinux.bin.gz
	48	* : [~31 MiB uncompressed max]
	49	* 0x01ef f000 FIT containing signed public key
	50	* : [~2 KiB in size]
	51	* 0x01f0 0000 DTB copied from prior-stage-provided region
	52	* : [~1 MiB max]
	53	* 0x0200 0000 FIT containing ramdisk and device tree
	54	* : initramfs.cpio.gz
	55	* : [~208 MiB uncompressed max, to CMA/bmem low address]
	56	* : [~80 MiB compressed max, to PSB low address]
	57	* : device tree binary
	58	* : [~60 KiB]
	59	* 0x0700 0000 Prior stage bootloader (PSB)
	60	* :
	61	* 0x0761 7000 Prior-stage-provided device tree binary (DTB)
	62	* : [~40 KiB in size]
	63	* 0x0f00 0000 Contiguous memory allocator (CMA/bmem) low address
	64	* :
	65	* 0x8010 0000 U-Boot code at ELF load address
	66	* : [~500 KiB in size, stripped]
	67	* 0xc000 0000 Top of RAM
	68	*
	69	* Setting gd->relocaddr to CONFIG_SYS_TEXT_BASE in dram_init_banksize
	70	* prevents U-Boot from relocating itself when it is run as an ELF
	71	* program by the prior stage bootloader.
	72	*
	73	* We want to keep the ramdisk and FDT in the FIT image in-place, to
	74	* accommodate stblinux's bmem and CMA regions. To accomplish this,
	75	* we set initrd_high and fdt_high to 0xffffffff, and the load and
	76	* entry addresses of the FIT ramdisk entry to 0x0.
	77	*
	78	* Overwriting the prior stage bootloader causes memory instability,
	79	* so the compressed initramfs needs to fit between the load address
	80	* and the PSB low address. In BOLT's default configuration this
	81	* limits the compressed size of the initramfs to approximately 80
	82	* MiB. However, BOLT can be configured to allow loading larger
	83	* initramfs images, in which case this limitation is eliminated.
	84	*/
894c3ad2	85	#define CONFIG_SYS_SDRAM_BASE 0x00000000
894c3ad2 TF	86	#define CONFIG_SYS_INIT_RAM_SIZE 0x100000
	87	#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + \
	88	CONFIG_SYS_INIT_RAM_SIZE - \
	89	GENERATED_GBL_DATA_SIZE)
894c3ad2 TF	90	#define CONFIG_SYS_LOAD_ADDR 0x2000000
	91
	92	/*
	93	* CONFIG_SYS_LOAD_ADDR - 1 MiB.
	94	*/
	95	#define CONFIG_SYS_FDT_SAVE_ADDRESS 0x1f00000
	96	#define CONFIG_SYS_CBSIZE 512
	97	#define CONFIG_SYS_MAXARGS 32
	98
	99	/*
	100	* Large kernel image bootm configuration.
	101	*/
	102	#define CONFIG_SYS_BOOTM_LEN SZ_64M
	103
	104	/*
	105	* NS16550 configuration.
	106	*/
	107	#define V_NS16550_CLK 81000000
	108
	109	#define CONFIG_SYS_NS16550
	110	#define CONFIG_SYS_NS16550_SERIAL
	111	#define CONFIG_SYS_NS16550_REG_SIZE (-4)
	112	#define CONFIG_SYS_NS16550_CLK V_NS16550_CLK
	113
	114	/*
	115	* Serial console configuration.
	116	*/
894c3ad2 TF	117	#define CONFIG_BAUDRATE 115200
	118	#define CONFIG_SYS_BAUDRATE_TABLE {4800, 9600, 19200, 38400, 57600, \
	119	115200}
	120
	121	/*
	122	* Informational display configuration.
	123	*/
	124	#define CONFIG_REVISION_TAG
	125
	126	/*
	127	* Command configuration.
	128	*/
	129	#define CONFIG_CMD_ASKENV
	130	#define CONFIG_CMD_CACHE
	131	#define CONFIG_CMD_EXT2
894c3ad2 TF	132	#define CONFIG_CMD_MMC
	133
	134	/*
	135	* Flash configuration.
	136	*/
	137	#define CONFIG_ST_SMI
	138	#define CONFIG_SPI_FLASH_STMICRO
	139	#define CONFIG_SPI_FLASH_MACRONIX
	140
	141	/*
	142	* Filesystem configuration.
	143	*/
	144	#define CONFIG_DOS_PARTITION
	145	#define CONFIG_CMD_EXT4
	146	#define CONFIG_FS_EXT4
	147	#define CONFIG_CMD_FS_GENERIC
	148
	149	/*
	150	* Environment configuration.
	151	*/
	152	#define CONFIG_SYS_REDUNDAND_ENVIRONMENT
894c3ad2	153	#define CONFIG_ENV_SIZE (64 << 10) /* 64 KiB */
894c3ad2 TF	154	#define CONFIG_ENV_OFFSET_REDUND (CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)
	155	#define CONFIG_ENV_OVERWRITE
	156
	157	/*
	158	* Save the prior stage provided DTB.
	159	*/
894c3ad2 TF	160	/*
	161	* Enable in-place RFS with this initrd_high setting.
	162	*/
	163	#define CONFIG_EXTRA_ENV_SETTINGS \
	164	"fdtsaveaddr=" __stringify(CONFIG_SYS_FDT_SAVE_ADDRESS) "\0" \
	165	"initrd_high=0xffffffff\0" \
	166	"fdt_high=0xffffffff\0"
	167
	168	/*
	169	* Set fdtaddr to prior stage-provided DTB in board_late_init, when
	170	* writeable environment is available.
	171	*/
	172	#define CONFIG_BOARD_LATE_INIT
	173
894c3ad2	174	#endif /* __BCMSTB_H */