Hi Bin,
On 30 April 2015 at 00:16, Bin Meng bmeng.cn@gmail.com wrote:
Hi Simon,
On Thu, Apr 30, 2015 at 1:11 PM, Simon Glass sjg@chromium.org wrote:
Hi Bin,
On 29 Apr 2015 10:26 pm, "Simon Glass" sjg@chromium.org wrote:
This series adds a new CPU uclass which is intended to be useful on any architecture. So far it has a very simple interface and a command to show CPU details.
This series also introduces multi-core init for x86. It is implemented and enabled on Minnowboard MAX, a single/dual-core Atom board. The CPU uclass is implemented for x86 and the Simple Firmware Interface provides these details to the kernel, since ACPI is not yet available.
With these changes Minnowboard MAX can boot into Linux with both cores enabled.
This series is available at u-boot-x86 branch 'cpu-working'.
Changes in v3:
- Rename CONFIG_STACK_SIZE to CONFIG_AP_STACK_SIZE
- Remove sipi_vector_location and sipi_vector_location_size variables
- Remove annoying /* 1ms */ comments
- Rename sipi.S to sipi_vector.S
- Correct 'ap_start32' to 'ap_start'
- Use macros for cr0 bit fields
- Correct style in a multi-line comment
- Use UCODE_HEADER_LEN instead of 48
- Remove unnecessary underscores in MP_FR_BLOCK_APS and MP_FR_NOBLOCK_APS
- Use 'cpu number' instead of 'coreboot cpu number'
- Remove a stray blank line in sipi.h
- Enhance comment for @microcode_lock
- Rename SMM_DEFAULT_BASE/SIZE to AP_DEFAULT_BASE/SIZE and drop smm.h
- Use data32 instead of our own 'o32'
- Move NUM_FIXED_MTRRS to mtrr.h
- Avoid using asmlinkage on ap_init()
- Add msr_clrbits_64() too
- Collect all new MSRs into msr-index.h
- Spell 'BayTrail' like so
- Make set_max_freq() static
I did not sort out the secondary CPU init in this series. I will take a look.
Thanks. What about the LAPIC patch? Is it dropped? http://patchwork.ozlabs.org/patch/465854/
Yes, that was a clean-up patch so not required. As you noticed I did not go far enough so I'll take another crack at it later.
Regards, Simon