summaryrefslogtreecommitdiff
path: root/arch/x86/cpu/cpu.c
Commit message (Collapse)AuthorAgeLines
* x86: Remove MIN_PORT80_KCLOCKS_DELAYBin Meng2015-12-01-18/+0
| | | | | | | | | | This is not referenced anywhere. Remove it, as well as tsc_base_kclocks and tsc_prev in the global data. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org> Fix 'Reomve' typo: Signed-off-by: Simon Glass <sjg@chromium.org>
* x86: Initialize GDT entry 1 to be the 32-bit CS as wellBin Meng2015-10-21-1/+6
| | | | | | | | Some OS (like VxWorks) requires GDT entry 1 to be the 32-bit CS. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Jian Luo <jian.luo4@boschrexroth.de>
* x86: Switch to using generic global_data setupSimon Glass2015-08-14-1/+3
| | | | | | | | | | | There is quite a bit of assembler code that can be removed if we use the generic global_data setup. Less arch-specific code makes it easier to add new features and maintain the start-up code. Drop the unneeded code and adjust the hooks in board_f.c to cope. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: Move the GDT into global_dataSimon Glass2015-08-14-4/+5
| | | | | | | | | Rather than keeping track of the Global Descriptor Table in its own memory we may as well put it in global_data with everything else. As a first step, stop using the separately allocated GDT. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: Handle running as EFI payloadSimon Glass2015-08-05-8/+13
| | | | | | | | | When U-Boot runs as an EFI payload it needs to avoid setting up the CPU again. Also U-Boot currently does not handle interrupts for many devices, so run with interrupts disabled. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: Use CR0 constants in CPU initSimon Glass2015-08-05-1/+1
| | | | | | | We should use these constants where possible. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: Allow cpu-x86 driver to be probed for UPBin Meng2015-07-28-0/+9
| | | | | | | | Currently cpu-x86 driver is probed only for SMP. We add the same support for UP when there is only one cpu node in the deive tree. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
* x86: Change pci option rom area MTRR setting to cacheableBin Meng2015-07-28-7/+20
| | | | | | | Turn on cache on the pci option rom area to improve the performance. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
* dm: x86: baytrail: Correct PCI region 3 when driver model is usedSimon Glass2015-07-14-0/+2
| | | | | | | | Commit afbbd413a fixed this for non-driver-model. Make sure that the driver model code handles this also. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: Setup fixed range MTRRs for legacy regionsBin Meng2015-07-14-0/+22
| | | | | | | | | We should setup fixed range MTRRs for some legacy regions like VGA RAM and PCI ROM areas as uncacheable. Note FSP may setup these to other cache settings, but we can override this in x86_cpu_init_f(). Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
* x86: Move lapic_setup() call into init_bsp()Bin Meng2015-07-14-2/+0
| | | | | | | | | | Currently lapic_setup() is called before calling mp_init(), which then calls init_bsp() where it calls enable_lapic(), which was already enabled in lapic_setup(). Hence move lapic_setup() call into init_bsp() to avoid the duplication. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
* x86: Move MP initialization codes into a common placeBin Meng2015-07-14-0/+40
| | | | | | | | | | | Most of the MP initialization codes in arch/x86/cpu/baytrail/cpu.c is common to all x86 processors, except detect_num_cpus() which varies from cpu to cpu. Move these to arch/x86/cpu/cpu.c and implement the new 'get_count' method for baytrail and cpu_x86 drivers. Now we call cpu_get_count() in mp_init() to get the number of CPUs. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
* x86: dm: Clean up cpu driversBin Meng2015-07-14-28/+0
| | | | | | | | | | | | | | | This commit does the following to clean up x86 cpu dm drivers: - Move cpu_x86 driver codes from arch/x86/cpu/cpu.c to a dedicated file arch/x86/cpu/cpu_x86.c - Rename x86_cpu_get_desc() to cpu_x86_get_desc() to keep consistent naming with other dm drivers - Add a new cpu_x86_bind() in the cpu_x86 driver which does exactly the same as the one in the intel baytrail cpu driver - Update intel baytrail cpu driver to use cpu_x86_get_desc() and cpu_x86_bind() Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
* x86: fsp: Load GDT before calling FspInitEntryBin Meng2015-07-14-0/+20
| | | | | | | | | | | | | | | | | | | | | Currently the FSP execution environment GDT is setup by U-Boot in arch/x86/cpu/start16.S, which works pretty well. But if we try to move the FspInitEntry call a little bit later to better fit into U-Boot's initialization sequence, FSP will fail to bring up the AP due to #GP fault as AP's GDT is duplicated from BSP whose GDT is now moved into CAR, and unfortunately FSP calls AP initialization after it disables the CAR. So basically the BSP's GDT still refers to the one in the CAR, whose content is no longer available, so when AP starts up and loads its segment register, it blows up. To resolve this, we load GDT before calling into FspInitEntry. The GDT is the same one used in arch/x86/cpu/start16.S, which is in the ROM and exists forever. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Andrew Bradford <andrew.bradford@kodakalaris.com> Tested-by: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
* x86: Allow CPUs to be set up after relocationSimon Glass2015-04-30-0/+38
| | | | | | | | This permits init of additional CPU cores after relocation and when driver model is ready. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: Store the GDT pointer in global_dataSimon Glass2015-04-29-0/+1
| | | | | | | | | When we start up additional CPUs we want them to use the same Global Descriptor Table. Store the address of this in global_data so we can reference it later. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: Implement reset_cpu() correctly for modern CPUsSimon Glass2015-04-29-13/+9
| | | | | | | | | | | | The existing code is pretty ancient and is unreliable on modern hardware. Generally it will hang. We can use port 0xcf9 to initiate reset on more modern hardware (say in the last 10 years). Update the reset_cpu() function to do this, and add a new 'full reset' function to perform a full power cycle. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: Write configuration tables in last_stage_init()Bin Meng2015-04-29-0/+10
| | | | | | | | We can write the configuration table in last_stage_init() for all x86 boards, but not with coreboot since coreboot already has them. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
* Kconfig: Move CONFIG_BOOTSTAGE to KconfigSimon Glass2015-04-18-1/+1
| | | | | | | Move CONFIG_BOOT_STAGE and its associated options to Kconfig. Adjust existing users and code. Signed-off-by: Simon Glass <sjg@chromium.org>
* x86: Save mtrr support flag in global dataBin Meng2015-01-23-0/+7
| | | | | | | | CPUID (EAX 01H) returns MTRR support flag in EDX bit 12. Probe this flag in x86_cpu_init_f() and save it in global data. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
* x86: Add GDT descriptors for option ROMsSimon Glass2014-11-25-3/+6
| | | | | | | Option ROMs require a few additional descriptors. Add these, and remove the enum since we now have to access several descriptors from assembler. Signed-off-by: Simon Glass <sjg@chromium.org>
* x86: Remove cpu_init_r() for x86Bin Meng2014-11-25-6/+0
| | | | | | | | | Since cpu_init_interrupts() was moved out of cpu_init_r(), it is useless to keep cpu_init_r() for x86, thus remove it. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
* x86: Call cpu_init_interrupts() from interrupt_init()Bin Meng2014-11-25-2/+0
| | | | | | | | | | | | | Currently cpu_init_interrupts() is called from cpu_init_r() to setup the interrupt and exception of the cpu core, but at that time the i8259 has not been initialized to mask all the irqs and remap the master i8259 interrupt vector base, so the whole system is at risk of being interrupted, and if interrupted, wrong interrupt/exception message is shown. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
* x86: Make show_boot_progress() commonSimon Glass2014-11-21-0/+24
| | | | | | | This function can probably be used on all x86 boards, so move it into the common file. Signed-off-by: Simon Glass <sjg@chromium.org>
* x86: Replace fill_processor_name() with cpu_get_name()Simon Glass2014-11-21-12/+10
| | | | | | | | This implementation has a 'cpu' prefix and returns a pointer to the string, avoiding the need for copying. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: Fix a warning with gcc 4.4.4Simon Glass2014-11-21-0/+1
| | | | | | | This warning appears even though it seems that the compiler could work it out. Fix it. Signed-off-by: Simon Glass <sjg@chromium.org>
* x86: Do CPU identification in the early phaseBin Meng2014-11-21-43/+229
| | | | | | | The CPU identification happens in x86_cpu_init_f() and corresponding fields are saved in the global data for later use. Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
* x86: Fix up some missing prototypesSimon Glass2014-11-21-2/+1
| | | | | | | Some functions are missing prototypes. Fix those that are specific to x86. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: Use the standard arch_cpu_init() functionSimon Glass2014-11-21-1/+0
| | | | | | | | Instead of an x86-specific cpu_init_f() function, use the normal U-Boot one for this purpose. Also remove a useless/misleading comment. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: Add support for starting 64-bit kernelSimon Glass2014-10-28-0/+45
| | | | | | | | Add code to jump to a 64-bit Linux kernel. We need to set up a flat page table structure, a new GDT and then go through a few hoops in the right order. Signed-off-by: Simon Glass <sjg@chromium.org>
* x86: Display basic CPU information on bootSimon Glass2014-10-28-0/+64
| | | | | | Display the type of CPU (x86 or x86_64) when starting up. Signed-off-by: Simon Glass <sjg@chromium.org>
* x86: Move paging functions into cpu.cSimon Glass2014-10-28-0/+35
| | | | | | | These functions really don't belong in physmem as they relate to the cpu. Move them. Signed-off-by: Simon Glass <sjg@chromium.org>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-24-17/+1
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* x86: Rationalise kernel booting logic and bootstageSimon Glass2013-05-13-0/+5
| | | | | | | | | | The 'Starting linux' message appears twice in the code, but both call through the same place. Unify these and add calls to bootstage to mark the occasion. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Michael Spang <spang@chromium.org> Acked-by: Graeme Russ <graeme.russ@gmail.com>
* x86: Add basic cache operationsSimon Glass2013-03-04-0/+23
| | | | | | | At present most x86 cache operations are undefined. Add a basic implementation for these. Signed-off-by: Simon Glass <sjg@chromium.org>
* x86: Move gd_addr into arch_global_dataSimon Glass2013-02-01-2/+2
| | | | | | | | Move this field into arch_global_data and tidy up. Signed-off-by: Simon Glass <sjg@chromium.org> [trini: Add arch/x86/cpu/cpu.c changes after Graeme's comments] Signed-off-by: Tom Rini <trini@ti.com>
* x86: Set up the global data pointer in C instead of asmSimon Glass2013-02-01-1/+3
| | | | | | | | | | | | | | | | We currently assume that the global data pointer is at the start of struct global_data. We want to remove this restriction, and it is easiest to do this in C. Remove the asm code and add equivalent code in C. This idea was proposed by Graeme Russ here: http://patchwork.ozlabs.org/patch/199741/ Signed-off-by: Simon Glass <sjg@chromium.org> [trini: Apply Graeme Russ' comments http://patchwork.ozlabs.org/patch/206305/ here, re-order] Signed-off-by: Tom Rini <trini@ti.com>
* x86: Add basic cache operationsStefan Reinauer2012-12-06-6/+32
| | | | | | | Add functions to enable/disable the data cache. Signed-off-by: Stefan Reinauer <reinauer@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
* x86: Add a default implementation for cleanup_before_linux()Gabe Black2012-11-30-0/+5
| | | | | | | | | | | This function provides an opportunity for some last minute cleanup and reconfiguration before control is handed over to Linux. It's possible this may need to do something in the future, but for now it's left empty. It's set up as a weak symbol so it can be overridden if necessary on a case by case basis. Signed-off-by: Gabe Black <gabeblack@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
* x86: Put global data on the stackGraeme Russ2012-11-28-6/+0
| | | | | | | | | | Putting global data on the stack simplifies the init process (and makes it slightly quicker). During the 'flash' stage of the init sequence, global data is in the CAR stack. After SDRAM is initialised, global data is copied from CAR to the SDRAM stack Signed-off-by: Graeme Russ <graeme.russ@gmail.com> Signed-off-by: Simon Glass <sjg@chromium.org>
* x86: Forward declare gd_tGraeme Russ2012-11-28-1/+1
| | | | | | | | So it can be used as a type in struct global_data and remove an ugly typecast Signed-off-by: Graeme Russ <graeme.russ@gmail.com> Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Marek Vasut <marex@denx.de>
* x86: Create weak init_cache() and default enable_caches() functionsGraeme Russ2012-01-04-3/+15
| | | | | | -- Changes for v2: - Tweaked commit title
* x86: Use fs for global dataGraeme Russ2012-01-04-22/+31
| | | | | | | | | | | | | | | | | | | | | | Use the base address of the 'F' segment as a pointer to the global data structure. By adding the linear address (i.e. the 'D' segment address) as the first word of the global data structure, the address of the global data relative to the 'D' segment can be found simply, for example, by: fs movl 0, %eax This makes the gd 'pointer' writable prior to relocation (by reloading the Global Desctriptor Table) which brings x86 into line with all other arches NOTE: Writing to the gd 'pointer' is expensive (but we only do it twice) but using it to access global data members (read and write) is still fairly cheap -- Changes for v2: - Rebased against changes made to patch #3 - Removed extra indent - Tweaked commit message
* x86: Rework Global Descriptor Table loadingGraeme Russ2012-01-04-29/+53
| | | | | | | | | | | | The inline assembler is ugly and uses hard coded magic numbers. Make it more elegant to allow cleaner implementation of future GDT related patches. The compiler seems smart enough to generate the same code anyway -- Changes for v2: - Rebased against revised patch #3 - Use GDT size define instead of magic number - Added commit message
* x86: Remove GDR related magic numbersGraeme Russ2012-01-04-4/+4
| | | | | | | | -- Changes for v2: - Use an enum - Add defined for GDT size (previously added in patch 7) - Use X86_ namespace (as per Linux headers)
* x86: Fix a few recently added bugsGabe Black2011-11-29-0/+1
| | | | | Signed-off-by: Gabe Black <gabeblack@chromium.org> Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
* cosmetic: checkpatch cleanup of arch/x86/cpu/*.cGraeme Russ2011-11-29-11/+11
| | | | Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
* Convert ISO-8859 files to UTF-8Albert ARIBAUD2011-08-04-1/+1
| | | | | | | | There was a mix of UTF-8 and ISO-8859 files in the U-Boot source tree, which could cause issues with the patchwork review system. This commit converts all ISO-8859 files to UTF-8. Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
* x86: Rename i386 to x86Graeme Russ2011-04-13-0/+157
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
generated by cgit v1.1 at 2024-11-10 05:11:54 +0000