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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* ti_armv7_common.h
*
* Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
*
* The various ARMv7 SoCs from TI all share a number of IP blocks when
* implementing a given feature. Rather than define these in every
* board or even SoC common file, we define a common file to be re-used
* in all cases. While technically true that some of these details are
* configurable at the board design, they are common throughout SoC
* reference platforms as well as custom designs and become de facto
* standards.
*/
#ifndef __CONFIG_TI_ARMV7_COMMON_H__
#define __CONFIG_TI_ARMV7_COMMON_H__
/*
* We setup defaults based on constraints from the Linux kernel, which should
* also be safe elsewhere. We have the default load at 32MB into DDR (for
* the kernel), FDT above 128MB (the maximum location for the end of the
* kernel), and the ramdisk 512KB above that (allowing for hopefully never
* seen large trees). We say all of this must be within the first 256MB
* as that will normally be within the kernel lowmem and thus visible via
* bootm_size and we only run on platforms with 256MB or more of memory.
*
* As a temporary storage for DTBO blobs (which should be applied into DTB
* blob), we use the location 15.5 MB above the ramdisk. If someone wants to
* use ramdisk bigger than 15.5 MB, then DTBO can be loaded and applied to DTB
* blob before loading the ramdisk, as DTBO location is only used as a temporary
* storage, and can be re-used after 'fdt apply' command is done.
*/
#define DEFAULT_LINUX_BOOT_ENV \
"loadaddr=0x82000000\0" \
"kernel_addr_r=0x82000000\0" \
"fdtaddr=0x88000000\0" \
"dtboaddr=0x89000000\0" \
"fdt_addr_r=0x88000000\0" \
"fdtoverlay_addr_r=0x89000000\0" \
"rdaddr=0x88080000\0" \
"ramdisk_addr_r=0x88080000\0" \
"scriptaddr=0x80000000\0" \
"pxefile_addr_r=0x80100000\0" \
"bootm_size=0x10000000\0" \
"boot_fdt=try\0"
#define DEFAULT_FIT_TI_ARGS \
"boot_fit=0\0" \
"addr_fit=0x90000000\0" \
"name_fit=fitImage\0" \
"update_to_fit=setenv loadaddr ${addr_fit}; setenv bootfile ${name_fit}\0" \
"get_overlaystring=" \
"for overlay in $name_overlays;" \
"do;" \
"setenv overlaystring ${overlaystring}'#'${overlay};" \
"done;\0" \
"run_fit=bootm ${addr_fit}#conf-${fdtfile}${overlaystring}\0" \
/*
* DDR information. If the CONFIG_NR_DRAM_BANKS is not defined,
* we say (for simplicity) that we have 1 bank, always, even when
* we have more. We always start at 0x80000000, and we place the
* initial stack pointer in our SRAM. Otherwise, we can define
* CONFIG_NR_DRAM_BANKS before including this file.
*/
#define CONFIG_SYS_SDRAM_BASE 0x80000000
/* If DM_I2C, enable non-DM I2C support */
/*
* The following are general good-enough settings for U-Boot. We set a
* large malloc pool as we generally have a lot of DDR, and we opt for
* function over binary size in the main portion of U-Boot as this is
* generally easily constrained later if needed. We enable the config
* options that give us information in the environment about what board
* we are on so we do not need to rely on the command prompt. We set a
* console baudrate of 115200 and use the default baud rate table.
*/
/* As stated above, the following choices are optional. */
/* Console I/O Buffer Size */
/*
* When we have SPI, NOR or NAND flash we expect to be making use of
* mtdparts, both for ease of use in U-Boot and for passing information
* on to the Linux kernel.
*/
/*
* Our platforms make use of SPL to initalize the hardware (primarily
* memory) enough for full U-Boot to be loaded. We make use of the general
* SPL framework found under common/spl/. Given our generally common memory
* map, we set a number of related defaults and sizes here.
*/
#if !defined(CONFIG_NOR_BOOT) && \
!(defined(CONFIG_QSPI_BOOT) && defined(CONFIG_AM43XX))
/*
* We also support Falcon Mode so that the Linux kernel can be booted
* directly from SPL. This is not currently available on HS devices.
*/
/*
* Place the image at the start of the ROM defined image space (per
* CONFIG_SPL_TEXT_BASE and we limit our size to the ROM-defined
* downloaded image area minus 1KiB for scratch space. We initalize DRAM as
* soon as we can so that we can place stack, malloc and BSS there. We load
* U-Boot itself into memory at 0x80800000 for legacy reasons (to not conflict
* with older SPLs). We have our BSS be placed 2MiB after this, to allow for
* the default Linux kernel address of 0x80008000 to work with most sized
* kernels, in the Falcon Mode case. We have the SPL malloc pool at the end
* of the BSS area. We suggest that the stack be placed at 32MiB after the
* start of DRAM to allow room for all of the above (handled in Kconfig).
*/
#ifdef CONFIG_SPL_OS_BOOT
/* FAT */
/* RAW SD card / eMMC */
#endif
/* General parts of the framework, required. */
#ifdef CONFIG_MTD_RAW_NAND
#define CONFIG_SYS_NAND_U_BOOT_START CONFIG_SYS_TEXT_BASE
#endif
#endif /* !CONFIG_NOR_BOOT */
/* Generic Environment Variables */
#ifdef CONFIG_CMD_NET
#define NETARGS \
"static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}" \
"::off\0" \
"nfsopts=nolock\0" \
"rootpath=/export/rootfs\0" \
"netloadimage=tftp ${loadaddr} ${bootfile}\0" \
"netloadfdt=tftp ${fdtaddr} ${fdtfile}\0" \
"netargs=setenv bootargs console=${console} " \
"${optargs} " \
"root=/dev/nfs " \
"nfsroot=${serverip}:${rootpath},${nfsopts} rw " \
"ip=dhcp\0" \
"netboot=echo Booting from network ...; " \
"setenv autoload no; " \
"dhcp; " \
"run netloadimage; " \
"run netloadfdt; " \
"run netargs; " \
"bootz ${loadaddr} - ${fdtaddr}\0"
#else
#define NETARGS ""
#endif
#endif /* __CONFIG_TI_ARMV7_COMMON_H__ */
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