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![Stephen Warren](/assets/img/avatar_default.png)
The new value is the most likely value where the kernel wants to end up at run-time. Selecting this value as the load address likely avoids the need to copy the kernel image from the actual load address to the desired load address. Note that this isn't guaranteed since the kernel may wish to run at an arbitrary location. In that case, U-Boot will still relocate the image according to its wishes; this change is a performance optimization, not a hard-coding of the final image location. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/*
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* (C) Copyright 2013-2015
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* NVIDIA Corporation <www.nvidia.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _TEGRA210_COMMON_H_
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#define _TEGRA210_COMMON_H_
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#include "tegra-common.h"
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/* Cortex-A57 uses a cache line size of 64 bytes */
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#define CONFIG_SYS_CACHELINE_SIZE 64
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/*
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* NS16550 Configuration
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*/
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#define V_NS16550_CLK 408000000 /* 408MHz (pllp_out0) */
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/*
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* Miscellaneous configurable options
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*/
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#define CONFIG_STACKBASE 0x82800000 /* 40MB */
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/*-----------------------------------------------------------------------
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* Physical Memory Map
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*/
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#define CONFIG_SYS_TEXT_BASE 0x8010E000
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/* Generic Interrupt Controller */
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#define CONFIG_GICV2
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/*
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* Memory layout for where various images get loaded by boot scripts:
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*
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* scriptaddr can be pretty much anywhere that doesn't conflict with something
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* else. Put it above BOOTMAPSZ to eliminate conflicts.
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*
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* pxefile_addr_r can be pretty much anywhere that doesn't conflict with
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* something else. Put it above BOOTMAPSZ to eliminate conflicts.
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*
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* kernel_addr_r must be within the first 128M of RAM in order for the
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* kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
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* decompress itself to 0x8000 after the start of RAM, kernel_addr_r
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* should not overlap that area, or the kernel will have to copy itself
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* somewhere else before decompression. Similarly, the address of any other
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* data passed to the kernel shouldn't overlap the start of RAM. Pushing
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* this up to 16M allows for a sizable kernel to be decompressed below the
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* compressed load address.
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*
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* fdt_addr_r simply shouldn't overlap anything else. Choosing 32M allows for
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* the compressed kernel to be up to 16M too.
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*
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* ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
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* for the FDT/DTB to be up to 1M, which is hopefully plenty.
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*/
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#define CONFIG_LOADADDR 0x80080000
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#define MEM_LAYOUT_ENV_SETTINGS \
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"scriptaddr=0x90000000\0" \
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"pxefile_addr_r=0x90100000\0" \
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"kernel_addr_r=" __stringify(CONFIG_LOADADDR) "\0" \
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"fdt_addr_r=0x82000000\0" \
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"ramdisk_addr_r=0x82100000\0"
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/* Defines for SPL */
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#define CONFIG_SPL_TEXT_BASE 0x80108000
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#define CONFIG_SYS_SPL_MALLOC_START 0x80090000
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#define CONFIG_SPL_STACK 0x800ffffc
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/* For USB EHCI controller */
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#define CONFIG_EHCI_IS_TDI
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#define CONFIG_USB_EHCI_TXFIFO_THRESH 0x10
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#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 1
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/* GPU needs setup */
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#define CONFIG_TEGRA_GPU
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#endif /* _TEGRA210_COMMON_H_ */
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