2018-05-06 21:58:06 +00:00
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/* SPDX-License-Identifier: GPL-2.0+ */
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2012-12-11 13:34:18 +00:00
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/*
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* (C) Copyright 2010-2012
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* NVIDIA Corporation <www.nvidia.com>
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*/
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#ifndef _TEGRA30_COMMON_H_
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#define _TEGRA30_COMMON_H_
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#include "tegra-common.h"
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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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2019-02-12 16:03:14 +00:00
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#define CONFIG_STACKBASE 0x83800000 /* 56MB */
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2012-12-11 13:34:18 +00:00
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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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2014-02-05 16:24:59 +00:00
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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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2012-12-11 13:34:18 +00:00
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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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2019-02-12 16:03:14 +00:00
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* this up to 32M allows for a sizable kernel to be decompressed below the
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2012-12-11 13:34:18 +00:00
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* compressed load address.
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*
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2019-02-12 16:03:14 +00:00
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* fdt_addr_r simply shouldn't overlap anything else. Choosing 48M allows for
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* the compressed kernel to be up to 32M too.
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2012-12-11 13:34:18 +00:00
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*
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2019-02-12 16:03:14 +00:00
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* ramdisk_addr_r simply shouldn't overlap anything else. Choosing 49M allows
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2012-12-11 13:34:18 +00:00
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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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ARM: tegra: CONFIG_{SYS_, }LOAD{_, }ADDR rationalization
As best I can tell, CONFIG_SYS_LOAD_ADDR and CONFIG_LOADADDR/$loadaddr
serve essentially the same purpose. Roughly, if a command takes a load
address, then CONFIG_SYS_LOAD_ADDR or $loadaddr (or both) are the default
if the command-line does not specify the address. Different U-Boot
commands are inconsistent re: which of the two default values they use.
As such, set the two to the same value, and move the logic that does this
into tegra-common-post.h so it's not duplicated. A number of other non-
Tegra boards do this too.
The values chosen for these macros are no longer consistent with anything
in MEM_LAYOUT_ENV_SETTINGS. Regain consistency by setting $kernel_addr_r
to CONFIG_LOADADDR. Older scripts tend to use $loadaddr for the default
kernel load address, whereas newer scripts and features tend to use
$kernel_addr_r, along with other variables for other purposes such as
DTBs and initrds. Hence, it's logical they should share the same value.
I had originally thought to make the $kernel_addr_r and CONFIG_LOADADDR
have different values. This would guarantee no interference if a script
used the two variables for different purposes. However, that scenario is
unlikely given the semantic meaning associated with the two variables.
The lowest available value is 0x90200000; see comments for
MEM_LAYOUT_ENV_SETTINGS in tegra30-common-post.h for details. However,
that value would be problematic for a script that loaded a raw zImage to
$loadaddr, since it's more than 128MB beyond the start of SDRAM, which
would interfere with the kernel's CONFIG_AUTO_ZRELADDR. So, let's not do
that.
The only potential fallout I could foresee from this patch is if someone
has a script that loads the kernel to $loadaddr, but some other file
(DTB, initrd) to a hard-coded address that the new value of $loadaddr
interferes with. This seems unlikely. A user should not do that; they
should either hard-code all load addresses, or use U-Boot-supplied
variables for all load addresses. Equally, any fallout due to this change
is trivial to fix; simply modify the load addresses in that script.
Cc: Paul Walmsley <pwalmsley@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Paul Walmsley <pwalmsley@nvidia.com>
Reviewed-by: Simon Glass
Signed-off-by: Tom Warren <twarren@nvidia.com>
2015-04-01 21:40:53 +00:00
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#define CONFIG_LOADADDR 0x81000000
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2012-12-11 13:34:18 +00:00
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#define MEM_LAYOUT_ENV_SETTINGS \
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"scriptaddr=0x90000000\0" \
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2014-02-05 16:24:59 +00:00
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"pxefile_addr_r=0x90100000\0" \
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ARM: tegra: CONFIG_{SYS_, }LOAD{_, }ADDR rationalization
As best I can tell, CONFIG_SYS_LOAD_ADDR and CONFIG_LOADADDR/$loadaddr
serve essentially the same purpose. Roughly, if a command takes a load
address, then CONFIG_SYS_LOAD_ADDR or $loadaddr (or both) are the default
if the command-line does not specify the address. Different U-Boot
commands are inconsistent re: which of the two default values they use.
As such, set the two to the same value, and move the logic that does this
into tegra-common-post.h so it's not duplicated. A number of other non-
Tegra boards do this too.
The values chosen for these macros are no longer consistent with anything
in MEM_LAYOUT_ENV_SETTINGS. Regain consistency by setting $kernel_addr_r
to CONFIG_LOADADDR. Older scripts tend to use $loadaddr for the default
kernel load address, whereas newer scripts and features tend to use
$kernel_addr_r, along with other variables for other purposes such as
DTBs and initrds. Hence, it's logical they should share the same value.
I had originally thought to make the $kernel_addr_r and CONFIG_LOADADDR
have different values. This would guarantee no interference if a script
used the two variables for different purposes. However, that scenario is
unlikely given the semantic meaning associated with the two variables.
The lowest available value is 0x90200000; see comments for
MEM_LAYOUT_ENV_SETTINGS in tegra30-common-post.h for details. However,
that value would be problematic for a script that loaded a raw zImage to
$loadaddr, since it's more than 128MB beyond the start of SDRAM, which
would interfere with the kernel's CONFIG_AUTO_ZRELADDR. So, let's not do
that.
The only potential fallout I could foresee from this patch is if someone
has a script that loads the kernel to $loadaddr, but some other file
(DTB, initrd) to a hard-coded address that the new value of $loadaddr
interferes with. This seems unlikely. A user should not do that; they
should either hard-code all load addresses, or use U-Boot-supplied
variables for all load addresses. Equally, any fallout due to this change
is trivial to fix; simply modify the load addresses in that script.
Cc: Paul Walmsley <pwalmsley@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Paul Walmsley <pwalmsley@nvidia.com>
Reviewed-by: Simon Glass
Signed-off-by: Tom Warren <twarren@nvidia.com>
2015-04-01 21:40:53 +00:00
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"kernel_addr_r=" __stringify(CONFIG_LOADADDR) "\0" \
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2019-02-12 16:03:14 +00:00
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"fdt_addr_r=0x83000000\0" \
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"ramdisk_addr_r=0x83100000\0"
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2012-12-11 13:34:18 +00:00
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/* Defines for SPL */
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#define CONFIG_SYS_SPL_MALLOC_START 0x80090000
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#define CONFIG_SPL_STACK 0x800ffffc
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2013-06-21 11:05:48 +00:00
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/* For USB EHCI controller */
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#define CONFIG_EHCI_IS_TDI
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2013-11-06 06:03:44 +00:00
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#define CONFIG_USB_EHCI_TXFIFO_THRESH 0x10
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2013-06-21 11:05:48 +00:00
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2012-12-11 13:34:18 +00:00
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#endif /* _TEGRA30_COMMON_H_ */
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