include/configs/rpi.h - platform/external/u-boot - Gitiles

 /* SPDX-License-Identifier: GPL-2.0 */
 /*
  * (C) Copyright 2012-2016 Stephen Warren
  */

 #ifndef __CONFIG_H
 #define __CONFIG_H

 #include <linux/sizes.h>
 #include <asm/arch/timer.h>

 #ifndef __ASSEMBLY__
 #include <asm/arch/base.h>
 #endif

 #if defined(CONFIG_TARGET_RPI_2) || defined(CONFIG_TARGET_RPI_3_32B)
 #define CONFIG_SKIP_LOWLEVEL_INIT
 #endif

 /* Architecture, CPU, etc.*/

 /* Use SoC timer for AArch32, but architected timer for AArch64 */
 #ifndef CONFIG_ARM64
 #define CONFIG_SYS_TIMER_RATE		1000000
 #define CONFIG_SYS_TIMER_COUNTER	\
 	(&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo)
 #endif

 /*
  * 2835 is a SKU in a series for which the 2708 is the first or primary SoC,
  * so 2708 has historically been used rather than a dedicated 2835 ID.
  *
  * We don't define a machine type for bcm2709/bcm2836 since the RPi Foundation
  * chose to use someone else's previously registered machine ID (3139, MX51_GGC)
  * rather than obtaining a valid ID:-/
  *
  * For the bcm2837, hopefully a machine type is not needed, since everything
  * is DT.
  */
 #ifdef CONFIG_BCM2835
 #define CONFIG_MACH_TYPE		MACH_TYPE_BCM2708
 #endif

 /* Memory layout */
 #define CONFIG_SYS_SDRAM_BASE		0x00000000
 #define CONFIG_SYS_UBOOT_BASE		CONFIG_SYS_TEXT_BASE
 /*
  * The board really has 256M. However, the VC (VideoCore co-processor) shares
  * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
  * smaller amount of RAM is present in order to avoid stomping on the area
  * the VC uses.
  */
 #define CONFIG_SYS_SDRAM_SIZE		SZ_128M
 #define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_SDRAM_BASE + \
 					 CONFIG_SYS_SDRAM_SIZE - \
 					 GENERATED_GBL_DATA_SIZE)
 #define CONFIG_SYS_MALLOC_LEN		SZ_4M
 #define CONFIG_LOADADDR			0x00200000

 #ifdef CONFIG_ARM64
 #define CONFIG_SYS_BOOTM_LEN		SZ_64M
 #endif

 /* Devices */
 /* GPIO */
 #define CONFIG_BCM2835_GPIO
 /* LCD */
 #define CONFIG_LCD_DT_SIMPLEFB
 #define CONFIG_VIDEO_BCM2835

 /* DFU over USB/UDC */
 #ifdef CONFIG_CMD_DFU
 #ifdef CONFIG_ARM64
 #define KERNEL_FILENAME		"Image"
 #else
 #define KERNEL_FILENAME		"zImage"
 #endif

 #define ENV_DFU_SETTINGS \
 	"dfu_alt_info=u-boot.bin fat 0 1;uboot.env fat 0 1;" \
 		      "config.txt fat 0 1;" \
 		      KERNEL_FILENAME " fat 0 1\0"
 #else
 #define ENV_DFU_SETTINGS ""
 #endif

 /* Console configuration */
 #define CONFIG_SYS_CBSIZE		1024

 /* Environment */
 #define CONFIG_SYS_LOAD_ADDR		0x1000000

 /* Shell */

 /* ATAGs support for bootm/bootz */
 #define CONFIG_SETUP_MEMORY_TAGS
 #define CONFIG_CMDLINE_TAG
 #define CONFIG_INITRD_TAG

 /* Environment */
 #define ENV_DEVICE_SETTINGS \
 	"stdin=serial,usbkbd\0" \
 	"stdout=serial,vidconsole\0" \
 	"stderr=serial,vidconsole\0"

 #ifdef CONFIG_ARM64
 #define FDT_HIGH "ffffffffffffffff"
 #define INITRD_HIGH "ffffffffffffffff"
 #else
 #define FDT_HIGH "ffffffff"
 #define INITRD_HIGH "ffffffff"
 #endif

 /*
  * Memory layout for where various images get loaded by boot scripts:
  *
  * I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
  *
  * Older versions of the boot firmware place the firmware-loaded DTB at 0x100,
  * newer versions place it in high memory. So prevent U-Boot from doing its own
  * DTB + initrd relocation so that we won't accidentally relocate the initrd
  * over the firmware-loaded DTB and generally try to lay out things starting
  * from the bottom of RAM.
  *
  * kernel_addr_r has different constraints on ARM and Aarch64.  For 32-bit ARM,
  * it must be within the first 128M of RAM in order for the kernel's
  * CONFIG_AUTO_ZRELADDR option to work. The kernel itself will be decompressed
  * to 0x8000 but the decompressor clobbers 0x4000-0x8000 as well. The
  * decompressor also likes to relocate itself to right past the end of the
  * decompressed kernel, so in total the sum of the compressed and and
  * decompressed kernel needs to be reserved.
  *
  *   For Aarch64, the kernel image is uncompressed and must be loaded at
  *   text_offset bytes (specified in the header of the Image) into a 2MB
  *   boundary. The 'booti' command relocates the image if necessary. Linux uses
  *   a default text_offset of 0x80000.  In summary, loading at 0x80000
  *   satisfies all these constraints and reserving memory up to 0x02400000
  *   permits fairly large (roughly 36M) kernels.
  *
  * scriptaddr and pxefile_addr_r can be pretty much anywhere that doesn't
  * conflict with something else. Reserving 1M for each of them at
  * 0x02400000-0x02500000 and 0x02500000-0x02600000 should be plenty.
  *
  * On ARM, both the DTB and any possible initrd must be loaded such that they
  * fit inside the lowmem mapping in Linux. In practice, this usually means not
  * more than ~700M away from the start of the kernel image but this number can
  * be larger OR smaller depending on e.g. the 'vmalloc=xxxM' command line
  * parameter given to the kernel. So reserving memory from low to high
  * satisfies this constraint again. Reserving 1M at 0x02600000-0x02700000 for
  * the DTB leaves rest of the free RAM to the initrd starting at 0x02700000.
  * Even with the smallest possible CPU-GPU memory split of the CPU getting
  * only 64M, the remaining 25M starting at 0x02700000 should allow quite
  * large initrds before they start colliding with U-Boot.
  */
 #define ENV_MEM_LAYOUT_SETTINGS \
 	"fdt_high=" FDT_HIGH "\0" \
 	"initrd_high=" INITRD_HIGH "\0" \
 	"kernel_addr_r=0x00080000\0" \
 	"scriptaddr=0x02400000\0" \
 	"pxefile_addr_r=0x02500000\0" \
 	"fdt_addr_r=0x02600000\0" \
 	"ramdisk_addr_r=0x02700000\0"

 #if CONFIG_IS_ENABLED(CMD_MMC)
 	#define BOOT_TARGET_MMC(func) \
 		func(MMC, mmc, 0) \
 		func(MMC, mmc, 1)
 #else
 	#define BOOT_TARGET_MMC(func)
 #endif

 #if CONFIG_IS_ENABLED(CMD_USB)
 	#define BOOT_TARGET_USB(func) func(USB, usb, 0)
 #else
 	#define BOOT_TARGET_USB(func)
 #endif

 #if CONFIG_IS_ENABLED(CMD_PXE)
 	#define BOOT_TARGET_PXE(func) func(PXE, pxe, na)
 #else
 	#define BOOT_TARGET_PXE(func)
 #endif

 #if CONFIG_IS_ENABLED(CMD_DHCP)
 	#define BOOT_TARGET_DHCP(func) func(DHCP, dhcp, na)
 #else
 	#define BOOT_TARGET_DHCP(func)
 #endif

 #define BOOT_TARGET_DEVICES(func) \
 	BOOT_TARGET_MMC(func) \
 	BOOT_TARGET_USB(func) \
 	BOOT_TARGET_PXE(func) \
 	BOOT_TARGET_DHCP(func)

 #include <config_distro_bootcmd.h>

 #define CONFIG_EXTRA_ENV_SETTINGS \
 	"dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \
 	ENV_DEVICE_SETTINGS \
 	ENV_DFU_SETTINGS \
 	ENV_MEM_LAYOUT_SETTINGS \
 	BOOTENV


 #endif
	/* SPDX-License-Identifier: GPL-2.0 */
	/*
	* (C) Copyright 2012-2016 Stephen Warren
	*/

	#ifndef __CONFIG_H
	#define __CONFIG_H

	#include <linux/sizes.h>
	#include <asm/arch/timer.h>

	#ifndef __ASSEMBLY__
	#include <asm/arch/base.h>
	#endif

	#if defined(CONFIG_TARGET_RPI_2) \|\| defined(CONFIG_TARGET_RPI_3_32B)
	#define CONFIG_SKIP_LOWLEVEL_INIT
	#endif

	/* Architecture, CPU, etc.*/

	/* Use SoC timer for AArch32, but architected timer for AArch64 */
	#ifndef CONFIG_ARM64
	#define CONFIG_SYS_TIMER_RATE 1000000
	#define CONFIG_SYS_TIMER_COUNTER \
	(&((struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR)->clo)
	#endif

	/*
	* 2835 is a SKU in a series for which the 2708 is the first or primary SoC,
	* so 2708 has historically been used rather than a dedicated 2835 ID.
	*
	* We don't define a machine type for bcm2709/bcm2836 since the RPi Foundation
	* chose to use someone else's previously registered machine ID (3139, MX51_GGC)
	* rather than obtaining a valid ID:-/
	*
	* For the bcm2837, hopefully a machine type is not needed, since everything
	* is DT.
	*/
	#ifdef CONFIG_BCM2835
	#define CONFIG_MACH_TYPE MACH_TYPE_BCM2708
	#endif

	/* Memory layout */
	#define CONFIG_SYS_SDRAM_BASE 0x00000000
	#define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
	/*
	* The board really has 256M. However, the VC (VideoCore co-processor) shares
	* the RAM, and uses a configurable portion at the top. We tell U-Boot that a
	* smaller amount of RAM is present in order to avoid stomping on the area
	* the VC uses.
	*/
	#define CONFIG_SYS_SDRAM_SIZE SZ_128M
	#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
	CONFIG_SYS_SDRAM_SIZE - \
	GENERATED_GBL_DATA_SIZE)
	#define CONFIG_SYS_MALLOC_LEN SZ_4M
	#define CONFIG_LOADADDR 0x00200000

	#ifdef CONFIG_ARM64
	#define CONFIG_SYS_BOOTM_LEN SZ_64M
	#endif

	/* Devices */
	/* GPIO */
	#define CONFIG_BCM2835_GPIO
	/* LCD */
	#define CONFIG_LCD_DT_SIMPLEFB
	#define CONFIG_VIDEO_BCM2835

	/* DFU over USB/UDC */
	#ifdef CONFIG_CMD_DFU
	#ifdef CONFIG_ARM64
	#define KERNEL_FILENAME "Image"
	#else
	#define KERNEL_FILENAME "zImage"
	#endif

	#define ENV_DFU_SETTINGS \
	"dfu_alt_info=u-boot.bin fat 0 1;uboot.env fat 0 1;" \
	"config.txt fat 0 1;" \
	KERNEL_FILENAME " fat 0 1\0"
	#else
	#define ENV_DFU_SETTINGS ""
	#endif

	/* Console configuration */
	#define CONFIG_SYS_CBSIZE 1024

	/* Environment */
	#define CONFIG_SYS_LOAD_ADDR 0x1000000

	/* Shell */

	/* ATAGs support for bootm/bootz */
	#define CONFIG_SETUP_MEMORY_TAGS
	#define CONFIG_CMDLINE_TAG
	#define CONFIG_INITRD_TAG

	/* Environment */
	#define ENV_DEVICE_SETTINGS \
	"stdin=serial,usbkbd\0" \
	"stdout=serial,vidconsole\0" \
	"stderr=serial,vidconsole\0"

	#ifdef CONFIG_ARM64
	#define FDT_HIGH "ffffffffffffffff"
	#define INITRD_HIGH "ffffffffffffffff"
	#else
	#define FDT_HIGH "ffffffff"
	#define INITRD_HIGH "ffffffff"
	#endif

	/*
	* Memory layout for where various images get loaded by boot scripts:
	*
	* I suspect address 0 is used as the SMP pen on the RPi2, so avoid this.
	*
	* Older versions of the boot firmware place the firmware-loaded DTB at 0x100,
	* newer versions place it in high memory. So prevent U-Boot from doing its own
	* DTB + initrd relocation so that we won't accidentally relocate the initrd
	* over the firmware-loaded DTB and generally try to lay out things starting
	* from the bottom of RAM.
	*
	* kernel_addr_r has different constraints on ARM and Aarch64. For 32-bit ARM,
	* it must be within the first 128M of RAM in order for the kernel's
	* CONFIG_AUTO_ZRELADDR option to work. The kernel itself will be decompressed
	* to 0x8000 but the decompressor clobbers 0x4000-0x8000 as well. The
	* decompressor also likes to relocate itself to right past the end of the
	* decompressed kernel, so in total the sum of the compressed and and
	* decompressed kernel needs to be reserved.
	*
	* For Aarch64, the kernel image is uncompressed and must be loaded at
	* text_offset bytes (specified in the header of the Image) into a 2MB
	* boundary. The 'booti' command relocates the image if necessary. Linux uses
	* a default text_offset of 0x80000. In summary, loading at 0x80000
	* satisfies all these constraints and reserving memory up to 0x02400000
	* permits fairly large (roughly 36M) kernels.
	*
	* scriptaddr and pxefile_addr_r can be pretty much anywhere that doesn't
	* conflict with something else. Reserving 1M for each of them at
	* 0x02400000-0x02500000 and 0x02500000-0x02600000 should be plenty.
	*
	* On ARM, both the DTB and any possible initrd must be loaded such that they
	* fit inside the lowmem mapping in Linux. In practice, this usually means not
	* more than ~700M away from the start of the kernel image but this number can
	* be larger OR smaller depending on e.g. the 'vmalloc=xxxM' command line
	* parameter given to the kernel. So reserving memory from low to high
	* satisfies this constraint again. Reserving 1M at 0x02600000-0x02700000 for
	* the DTB leaves rest of the free RAM to the initrd starting at 0x02700000.
	* Even with the smallest possible CPU-GPU memory split of the CPU getting
	* only 64M, the remaining 25M starting at 0x02700000 should allow quite
	* large initrds before they start colliding with U-Boot.
	*/
	#define ENV_MEM_LAYOUT_SETTINGS \
	"fdt_high=" FDT_HIGH "\0" \
	"initrd_high=" INITRD_HIGH "\0" \
	"kernel_addr_r=0x00080000\0" \
	"scriptaddr=0x02400000\0" \
	"pxefile_addr_r=0x02500000\0" \
	"fdt_addr_r=0x02600000\0" \
	"ramdisk_addr_r=0x02700000\0"

	#if CONFIG_IS_ENABLED(CMD_MMC)
	#define BOOT_TARGET_MMC(func) \
	func(MMC, mmc, 0) \
	func(MMC, mmc, 1)
	#else
	#define BOOT_TARGET_MMC(func)
	#endif

	#if CONFIG_IS_ENABLED(CMD_USB)
	#define BOOT_TARGET_USB(func) func(USB, usb, 0)
	#else
	#define BOOT_TARGET_USB(func)
	#endif

	#if CONFIG_IS_ENABLED(CMD_PXE)
	#define BOOT_TARGET_PXE(func) func(PXE, pxe, na)
	#else
	#define BOOT_TARGET_PXE(func)
	#endif

	#if CONFIG_IS_ENABLED(CMD_DHCP)
	#define BOOT_TARGET_DHCP(func) func(DHCP, dhcp, na)
	#else
	#define BOOT_TARGET_DHCP(func)
	#endif

	#define BOOT_TARGET_DEVICES(func) \
	BOOT_TARGET_MMC(func) \
	BOOT_TARGET_USB(func) \
	BOOT_TARGET_PXE(func) \
	BOOT_TARGET_DHCP(func)

	#include <config_distro_bootcmd.h>

	#define CONFIG_EXTRA_ENV_SETTINGS \
	"dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \
	ENV_DEVICE_SETTINGS \
	ENV_DFU_SETTINGS \
	ENV_MEM_LAYOUT_SETTINGS \
	BOOTENV


	#endif