coreboot-kgpe-d16/src/soc/rockchip/common/cbmem.c

25 lines
691 B
C
Raw Normal View History

/*
* This file is part of the coreboot project.
*
* Copyright 2014 Rockchip Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <cbmem.h>
rk3288: Change all SoC headers to <soc/headername.h> system This patch is the start of a series to change all non-x86 SoC-specific headers to be included as <soc/header.h> instead of the old <soc/vendor/chip/header.h> or "header.h". It will add an include/soc/ directory under every src/soc/vendor/chip/ and append the .../include/ part of that to the global include path. This matches the usage of <arch/header.h> for architecture-specific headers and had already been done for some headers on Tegra. It has the advantage that a source file which does not know the specific SoC used (e.g. Tegra files common for multiple chips, or a global include file) can still include SoC-specific headers and access macros/types defined there. It also makes the includes for mainboard files more readable, and reduces the chance to pull in a wrong header when copying mainboard sources to use a different-related SoC (e.g. using a Tegra124 mainboard as template for a Tegra132 one). For easier maintainability, every SoC family is modified individually. This patch starts out by changing Rk3288. Also alphabetized headers in affected files since we touch them anyway. BUG=None TEST=Whole series: compared binary images for Daisy, Nyan_Blaze, Rush_Ryu, Storm, Urara and Veyron_Pinky. Confirmed that they are byte-for-byte identical except for timestamps, hashes, and __LINE__ macro replacements. Compile-tested individual patches. Change-Id: I4d74a0c56be278e591a9cf43f93e9900e41f4319 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 4ad8b6d2e0280428aa9742f0f7b723c00857334a Original-Change-Id: I415b8dbe735e572d4ae2cb1df62d66bcce386fff Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/222025 Reviewed-on: http://review.coreboot.org/9349 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-10-20 22:14:55 +02:00
#include <stddef.h>
rk3288: Handle framebuffer through memlayout, not the resource system We've traditionally tucked the framebuffer at the end of memory (above CBMEM) on ARM and declared it reserved through coreboot's resource allocator. This causes depthcharge to mark this area as reserved in the kernel's device tree, which may be necessary to avoid display corruption on handoff but also wastes space that the OS could use instead. Since rk3288 boards now have proper display shutdown code in depthcharge, keeping the framebuffer memory reserved across the handoff (and thus throughout the lifetime of the system) should no longer be necessary. For now let's just switch the rk3288 implementation to define it through memlayout instead, which is not communicated through the coreboot tables and will get treated as normal memory by depthcharge. Note that this causes it to get wiped in developer/recovery mode, which should not be a problem because that is done in response to VbInit() (long before any images are drawn) and 0 is the default value for a corebootfb anyway (a black pixel). Eventually, we might want to think about adding more memory types to coreboot's resource system (e.g. "reserved until kernel handoff", or something specifically for the frame buffer) to model this situation better, and maybe merge it with memlayout somehow. CQ-DEPEND=CL:239470 BRANCH=veyron BUG=chrome-os-partner:34713 TEST=Booted Jerry, noticed that 'free' now displays 0x7f000 more bytes than before (curiously not 0x80000 bytes, I guess there's some alignment waste in the kernel somewhere). Made sure the memory map output from coreboot looks as expected, there's no visible display corruption in developer/recovery mode and the 'cbmem' utility still works. Change-Id: I12b7bfc1b7525f5a08cb7c64f0ff1b174df252d4 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 10afdba54dd5d680acec9cb3fe5b9234e33ca5a2 Original-Change-Id: I1950407d3b734e2845ef31bcef7bc59b96c2ea03 Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/240819 Original-Reviewed-by: David Hendricks <dhendrix@chromium.org> Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/9732 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-01-14 23:53:59 +01:00
#include <symbols.h>
#include <soc/sdram.h>
rk3288: Change all SoC headers to <soc/headername.h> system This patch is the start of a series to change all non-x86 SoC-specific headers to be included as <soc/header.h> instead of the old <soc/vendor/chip/header.h> or "header.h". It will add an include/soc/ directory under every src/soc/vendor/chip/ and append the .../include/ part of that to the global include path. This matches the usage of <arch/header.h> for architecture-specific headers and had already been done for some headers on Tegra. It has the advantage that a source file which does not know the specific SoC used (e.g. Tegra files common for multiple chips, or a global include file) can still include SoC-specific headers and access macros/types defined there. It also makes the includes for mainboard files more readable, and reduces the chance to pull in a wrong header when copying mainboard sources to use a different-related SoC (e.g. using a Tegra124 mainboard as template for a Tegra132 one). For easier maintainability, every SoC family is modified individually. This patch starts out by changing Rk3288. Also alphabetized headers in affected files since we touch them anyway. BUG=None TEST=Whole series: compared binary images for Daisy, Nyan_Blaze, Rush_Ryu, Storm, Urara and Veyron_Pinky. Confirmed that they are byte-for-byte identical except for timestamps, hashes, and __LINE__ macro replacements. Compile-tested individual patches. Change-Id: I4d74a0c56be278e591a9cf43f93e9900e41f4319 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 4ad8b6d2e0280428aa9742f0f7b723c00857334a Original-Change-Id: I415b8dbe735e572d4ae2cb1df62d66bcce386fff Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/222025 Reviewed-on: http://review.coreboot.org/9349 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-10-20 22:14:55 +02:00
void *cbmem_top(void)
{
return _dram + sdram_size_mb()*MiB;
}