2 * Copyright (c) 2015 Gooogle, Inc
3 * Written by Simon Glass <sjg@chromium.org>
5 * SPDX-License-Identifier: GPL-2.0+
11 #define AP_DEFAULT_BASE 0x30000
12 #define AP_DEFAULT_SIZE 0x10000
17 * struct sipi_params_16bit - 16-bit SIPI entry-point parameters
19 * These are set up in the same space as the SIPI 16-bit code so that each AP
20 * can access the parameters when it boots.
22 * Each of these must be set up for the AP to boot, except @segment which is
23 * set in the assembly code.
25 * @ap_start: 32-bit SIPI entry point for U-Boot
26 * @segment: Code segment for U-Boot
27 * @pad: Padding (not used)
28 * @gdt_limit: U-Boot GDT limit (X86_GDT_SIZE - 1)
29 * @gdt: U-Boot GDT (gd->arch.gdt)
32 struct __packed sipi_params_16bit {
42 * struct sipi_params - 32-bit SIP entry-point parameters
44 * These are used by the AP init code and must be set up before the APs start.
45 * The members must match with the sipi_params layout in sipi_vector.S.
47 * The stack area extends down from @stack_top, with @stack_size allocated
50 * @idt_ptr: Interrupt descriptor table pointer
51 * @stack_top: Top of the AP stack area
52 * @stack_size: Size of each AP's stack
53 * @microcode_lock: Used to ensure only one AP loads microcode at once
54 * 0xffffffff enables parallel loading.
55 * @microcode_ptr: Pointer to microcode, or 0 if none
56 * @msr_table_ptr: Pointer to saved MSRs, a list of struct saved_msr
57 * @msr_count: Number of saved MSRs
58 * @c_handler: C function to call once early init is complete
59 * @ap_count: Shared atomic value to allocate CPU indexes
73 /* 16-bit AP entry point */
74 void ap_start16(void);
76 /* end of 16-bit code/data, marks the region to be copied to SIP vector */
77 void ap_start16_code_end(void);
79 /* 32-bit AP entry point */
82 extern char sipi_params_16bit[];
83 extern char sipi_params[];
85 #endif /* __ASSEMBLER__ */