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path: root/arch/x86/lib/zimage.c
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2021-12-31x86: Don't process the kernel command line unless enabledSimon Glass
If the 'bootm' command is not enabled then this code is not available and this causes a link error. Fix it. Note that for the EFI app, there is no indication of missing code. It just hangs! Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
2021-10-21x86: Create a new header for EFISimon Glass
The setup routines are called from zimage but don't really belong in the zimage header. Add a new EFI header to house these. Add comments so it is clear what the functions do. Note that these functions are x86-specific. The zimage business is not used on other architectures. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2021-08-02global: Convert simple_strtoul() with hex to hextoul()Simon Glass
It is a pain to have to specify the value 16 in each call. Add a new hextoul() function and update the code to use it. Add a proper comment to simple_strtoul() while we are here. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-07-15x86: Ensure the e820 map is installed in all casesSimon Glass
This is a revert of a recent logic change in setup_zimage(). We do actually need to install this information always. Change it to install from the Coreboot tables if available, else the normal source. Fixes: e7bae8283fe ("x86: Allow installing an e820 when booting from coreboot") Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2021-03-27x86: Allow installing an e820 when booting from corebootSimon Glass
Move this code into a generic location so that it can be used by other x86 boards which want to boot from coreboot. Also ensure that this is called if booting from coreboot. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-02-01x86: zimage: Improve command-line debug handlingSimon Glass
At present if the command line is very long it is truncated by the printf() statement, which works within a limited buffer. Use puts() instead. Also show better debugging with the command-line setup fails. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2021-02-01x86: zimage: Allow dumping the image from outside the moduleSimon Glass
At present it is possible to dump an image within the zimage command, but it is also useful to be able to dump it from elsewhere, for example in a loader that has special handling for the different zimage stages. Export this feature as a new function. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2021-01-05Merge tag 'v2021.01-rc5' into nextTom Rini
Prepare v2021.01-rc5 Signed-off-by: Tom Rini <trini@konsulko.com>
2020-12-16x86: zimage: Update cmdline parameter to be an env varSimon Glass
With the updated changes to bootargs substitution[1], the zboot command needs to be updated to get its command line from an environment variable instead of a memory address. This is because the command-line string must be updated to convert %U to ${uuid}, etc. In any case it is more flexible to use a environment variable and it is best to do this before the release to avoid a subsequent change. Update the command accordingly. [1] http://patchwork.ozlabs.org/project/uboot/list/?series=212481 Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-12-04x86: zimage: Add silent-console processingSimon Glass
At present zimage does its own command-line processing and does not support the 'silent console' feature. There doesn't seem to be any good reason for this. Add support for silent console to zimage. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-11-06x86: zimage: Quieten down the zimage boot processSimon Glass
Much of the output is not very useful. The bootm command is quite a bit quieter. Convert some output to use log_debug(). Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Igor Opaniuk <igor.opaniuk@toradex.com>
2020-11-06x86: zimage: Sanity-check the kernel version before printing itSimon Glass
With Chrome OS the kernel setup block is stored in a separate place from the kernel, so it is not possible to access the kernel version string. At present, garbage is printed. Add a sanity check to avoid this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-11-06x86: zimage: Add a little more loggingSimon Glass
Add logging for each part of the boot process, using a new Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Igor Opaniuk <igor.opaniuk@toradex.com>
2020-09-25x86: zboot: Allow overriding the command lineSimon Glass
When booting Chrome OS images the command line is stored separately from the kernel. Add a way to specify this address so that images boot correctly. Also add comments to the zimage.h header. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> [bmeng: adjust maxargs to 8 for 'zboot start'] Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2020-09-25x86: zboot: Add an option to dump the setup informationSimon Glass
There is a lot of information in the setup block and it is quite hard to decode manually. Add a 'zboot dump' command to decode it into a human-readable format. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-09-25x86: zboot: Allow setting a separate setup base addressSimon Glass
At present the setup block is always obtained from the image automatically. In some cases it can be useful to use a setup block obtained elsewhere, e.g. if the image has already been unpacked. Add an argument to support this and update the logic to use it if provided. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> [bmeng: adjust maxargs to 7 for 'zboot start'] Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2020-09-25x86: zboot: Set environment variables for image locationsSimon Glass
At present it is not possible to tell from a script where the setup block is, or where the image was loaded to. Add environment variables for this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-09-25x86: zboot: Add an 'setup' subcommandSimon Glass
Add a subcommand that sets up the kernel ready for execution. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-09-25x86: zboot: Add an 'load' subcommandSimon Glass
Add a subcommand that loads the kernel into the right places in memory. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> [bmeng: adjust ZBOOT_STATE_INFO value to match the command order] Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2020-09-25x86: zboot: Add an 'info' subcommandSimon Glass
Add a little subcommand that prints out where the kernel was loaded and its setup pointer. Run it by default in the normal boot. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-09-25x86: zboot: Add a 'go' subcommandSimon Glass
Split out the code that actually boots linux into a separate sub-command. Add base_ptr to the state to support this. Show an error if the boot fails, since this should not happen. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-09-25x86: zboot: Set up a sub-command structureSimon Glass
Add subcommands to zboot. At present there is only one called 'start' which does the whole boot. It is the default command so is optional. Change the 's' string variable to const while we are here. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> [bmeng: reduce maxargs to 6 of 'zboot start' subcommand] Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2020-09-25x86: zimage: Disable interrupts just before bootingSimon Glass
At present if an error occurs while setting up the boot, interrupts are left disabled. Move this call later in the sequence to avoid this problem. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-09-25x86: zboot: Correct image typeSimon Glass
At present U-Boot sets a loader type of 8 which means LILO version 8, according to the spec. Update it to 0x80, which means U-Boot with no particular version. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-09-25x86: zboot: Move kernel-version code into a functionSimon Glass
To help reduce the size and complexity of load_zimage(), move the code that reads the kernel version into a separate function. Update get_boot_protocol() to allow printing the 'Magic signature' message only once, under control of its callers. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-09-25x86: zimage: Avoid using #ifdefSimon Glass
Use IS_ENABLED() instead of #ifdef in this file. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-09-25x86: zimage: Use a state struct to hold the stateSimon Glass
At present the 'zboot' command does everything in one go. It would be better if it supported sub-commands like bootm, so it is possible to examine what will be booted before actually booting it. In preparation for this, move the 'state' of the command into a struct. This will allow it to be shared among multiple functions in this file. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-07-17x86: Drop setup_pcat_compatibility()Simon Glass
This function does not exist anymore. Drop it from the header file. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-05-18command: Remove the cmd_tbl_t typedefSimon Glass
We should not use typedefs in U-Boot. They cannot be used as forward declarations which means that header files must include the full header to access them. Drop the typedef and rename the struct to remove the _s suffix which is now not useful. This requires quite a few header-file additions. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-04-16x86: Move acpi_table header to main include/ directorySimon Glass
This file is potentially useful to other architectures saddled with ACPI so move most of its contents to a common location. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
2019-12-02common: Move enable/disable_interrupts out of common.hSimon Glass
Move these two functions into the irq_funcs.h header file. Also move interrupt_handler_t as this is used by the irq_install_handler() function. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2019-10-01x86: zImage: Propagate acpi_rsdp_addr to kernel via boot parametersAndy Shevchenko
This is reincarnation of the U-Boot commit 3469bf4274540d1491d58e878a9edc0bdcba17ac Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Date: Wed Jan 10 19:40:15 2018 +0200 x86: zImage: Propagate acpi_rsdp_addr to kernel via boot parameters after upstream got eventually the Linux kernel commit e6e094e053af75cbc164e950814d3d084fb1e698 Author: Juergen Gross <jgross@suse.com> Date: Tue Nov 20 08:25:29 2018 +0100 x86/acpi, x86/boot: Take RSDP address from boot params if available Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-08-11env: Move env_get_hex() to env.hSimon Glass
Move env_get_hex() over to the new header file. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-08-30x86: zimage: Remove acpi_rsdp_addr propagation to kernel boot parametersBin Meng
As of today, the proposal of adding "acpi_rsdp_addr" to the kernel boot protocol does not make its way to the kernel mainline. This creates some confusion if we leave it in the U-Boot code base. Remove it for now until we have a clear picture with kernel upstream. Note this eventually does a partial revert to commit 3469bf427454 ("x86: zImage: Propagate acpi_rsdp_addr to kernel via boot parameters") Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-08-30x86: zimage: Support booting Linux kernel from an EFI payloadBin Meng
At present Linux kernel loaded from U-Boot as an EFI payload does not boot. This fills in kernel's boot params structure with the required critical EFI information like system table address and memory map stuff so that kernel can obtain essential data like runtime services and ACPI table to boot. With this patch, now U-Boot as an EFI payload becomes much more practical: it is another option of kernel bootloader, ie, can be a replacement for grub. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
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>
2018-04-27Remove unnecessary instances of DECLARE_GLOBAL_DATA_PTRTom Rini
We have a large number of places where while we historically referenced gd in the code we no longer do, as well as cases where the code added that line "just in case" during development and never dropped it. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-03-30x86: zImage: Pass working device tree data to the kernelIvan Gorinov
On x86 platforms, U-Boot does not pass Device Tree data to the kernel. This prevents the kernel from using FDT loaded by U-Boot. Read the working FDT address from the "fdtaddr" environment variable and add a copy of the FDT data to the kernel setup_data list. Signed-off-by: Ivan Gorinov <ivan.gorinov@intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> [bmeng: add #include <linux/libfdt.h> to zimage.c to fix build error] Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2018-01-30x86: acpi: Use an API to get the ACPI RSDP table addressBin Meng
At present the acpi_rsdp_addr variable is directly referenced in setup_zimage(). This changes to use an API for better encapsulation and extension. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2018-01-30x86: zImage: Propagate acpi_rsdp_addr to kernel via boot parametersAndy Shevchenko
New field acpi_rsdp_addr, which has been introduced in boot protocol v2.14 [1], in boot parameters tells kernel the exact address of RDSP ACPI table. Knowing it increases robustness of the kernel by avoiding in some cases traversal through a part of physical memory. It will slightly reduce boot time by the same reason. [1] See Linux kernel commit 2f74cbf ("x86/boot: Add the ACPI RSDP address to struct setup_header::acpi_rdsp_addr") @ https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=2f74cbf for the details. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> [bmeng: updated the kernel commit git URL and fixed one style issue] Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2018-01-30x86: zImage: Move subarch assignment out of cmd_line checkAndy Shevchenko
The commit 20bfac0599bd ("x86: zImage: add Intel MID platforms support") introduced an assignment of subarch field in boot parameters, though missed the right place of doing that. It doesn't matter if we have or not a kernel command line supplied, we just set that field. Although guard it by protocol version which supports it. Fixes: 20bfac0599bd ("x86: zImage: add Intel MID platforms support") Cc: Vincent Tinelli <vincent.tinelli@intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-08-16env: Rename getenv/_f() to env_get()Simon Glass
We are now using an env_ prefix for environment functions. Rename these two functions for consistency. Also add function comments in common.h. Quite a few places use getenv() in a condition context, provoking a warning from checkpatch. These are fixed up in this patch also. Suggested-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Simon Glass <sjg@chromium.org>
2017-02-21x86: zImage: add Intel MID platforms supportVincent Tinelli
Intel MID platform boards have special treatment, such as boot parameter setting. Assign hardware_subarch accordingly if CONFIG_INTEL_MID is set. Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Vincent Tinelli <vincent.tinelli@intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2017-02-06x86: Use unsigned long for address in table generationSimon Glass
We should use unsigned long rather than u32 for addresses. Update this so that the table-generation code builds correctly on 64-bit machines. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-10-21x86: Move install_e820_map() out of zimage.cBin Meng
install_e820_map() has nothing to do with zimage related codes. Move it to a dedicated place. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
2015-07-28x86: Reserve PCIe ECAM address range in the E820 tableBin Meng
We should mark PCIe ECAM address range in the E820 table as reserved otherwise kernel will not attempt to use ECAM. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
2015-07-14x86: Configure VESA parameters before loading Linux kernelBin Meng
Store VESA parameters to Linux setup header so that vesafb driver in the kernel could work. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Jian Luo <jian.luo4@boschrexroth.de>
2015-04-29x86: Install a default e820 table in the __weak install_e820_map()Bin Meng
Create a default e820 table with 3 entries which is enough to boot a Linux kernel. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
2014-10-28x86: Correct a few progress message nitsSimon Glass
We should use puts() instead of printf() where possible. Also clarify the setup.bin message. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-10-28x86: Move kernel boot function to arch/x86/lib/bootm.cSimon Glass
The boot_zimage() function is badly named it can also boot a raw kernel. Rename it, and try to avoid pointers for memory addresses as it involves lots of casting. Signed-off-by: Simon Glass <sjg@chromium.org>
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