arch/x86/include/asm/spl.h

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Copyright (C) 2017 Google, Inc
 * Written by Simon Glass <sjg@chromium.org>
 */

#ifndef __asm_spl_h
#define __asm_spl_h

#define CONFIG_SPL_BOARD_LOAD_IMAGE

enum {
	BOOT_DEVICE_SPI_MMAP	= 10,
	BOOT_DEVICE_FAST_SPI,
	BOOT_DEVICE_CROS_VBOOT,
};

void jump_to_spl(ulong entry);

#endif
SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com> 2018-05-06 17:58:06 -04:00			`/* SPDX-License-Identifier: GPL-2.0+ */`
x86: Add an SPL implementation SPL needs to set up the machine ready for loading 64-bit U-Boot and jumping to it. Call the existing init routines in order to accomplish this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> 2017-01-16 07:03:56 -07:00			`/*`
			`* Copyright (C) 2017 Google, Inc`
			`* Written by Simon Glass <sjg@chromium.org>`
			`*/`
x86: Add a simple TPL implementation Add the required CPU code so that TPL builds correctly. Also update the SPL code to deal with being booted from TPL. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> 2019-05-02 10:52:12 -06:00
			`#ifndef __asm_spl_h`
			`#define __asm_spl_h`

			`#define CONFIG_SPL_BOARD_LOAD_IMAGE`

			`enum {`
x86: spl: Reduce priority of the basic SPL image loader This image loader works on systems where the flash is directly mapped to the last part of the 32-bit address space. On recent Intel systems (such as apollolake) this is not the case. Reduce the priority of this loader so that another one can override it. While we are here, rename the loader to BOOT_DEVICE_SPI_MMAP since BOOT_DEVICE_BOARD is not very descriptive. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> 2019-09-25 08:11:39 -06:00			`BOOT_DEVICE_SPI_MMAP = 10,`
x86: spi: Add helper functions for Intel Fast SPI Most x86 CPUs use a mechanism where the SPI flash is mapped into the very top of 32-bit address space, so that it can be executed in place and read simply by copying from memory. For an 8MB ROM the mapping starts at 0xff800000. However some recent Intel CPUs do not use a simple 1:1 memory map. Instead the map starts at a different address and not all of the SPI flash is accessible through the map. This 'Fast SPI' feature requires that U-Boot check the location of the map. It is also possible (optionally) to read from the SPI flash using a driver. Add support for booting from Fast SPI. The memory-mapped version is used by both TPL and SPL on Apollo Lake. In respect of a SPI flash driver, the actual SPI driver is ich.c - this just adds a few helper functions and definitions. This is used by Apollo Lake. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> 2019-12-06 21:41:43 -07:00			`BOOT_DEVICE_FAST_SPI,`
x86: Add a simple TPL implementation Add the required CPU code so that TPL builds correctly. Also update the SPL code to deal with being booted from TPL. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> 2019-05-02 10:52:12 -06:00			`BOOT_DEVICE_CROS_VBOOT,`
			`};`

			`void jump_to_spl(ulong entry);`

			`#endif`