Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #ifndef __ASM_SH_KEXEC_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define __ASM_SH_KEXEC_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <asm/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <asm/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  * I.e. Maximum page that is mapped directly into kernel memory,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  * and kmap is not required.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)  * Someone correct me if FIXADDR_START - PAGEOFFSET is not the correct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  * calculation for the amount of memory directly mappable into the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  * kernel memory space.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) /* Maximum physical address we can use pages from */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /* Maximum address we can reach in physical address mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /* Maximum address we can use for the control code buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define KEXEC_CONTROL_PAGE_SIZE	4096
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) /* The native architecture */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define KEXEC_ARCH KEXEC_ARCH_SH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #ifdef CONFIG_KEXEC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) /* arch/sh/kernel/machine_kexec.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) void reserve_crashkernel(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static inline void crash_setup_regs(struct pt_regs *newregs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 				    struct pt_regs *oldregs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	if (oldregs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		memcpy(newregs, oldregs, sizeof(*newregs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 		__asm__ __volatile__ ("mov r0, %0" : "=r" (newregs->regs[0]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 		__asm__ __volatile__ ("mov r1, %0" : "=r" (newregs->regs[1]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 		__asm__ __volatile__ ("mov r2, %0" : "=r" (newregs->regs[2]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 		__asm__ __volatile__ ("mov r3, %0" : "=r" (newregs->regs[3]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 		__asm__ __volatile__ ("mov r4, %0" : "=r" (newregs->regs[4]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 		__asm__ __volatile__ ("mov r5, %0" : "=r" (newregs->regs[5]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 		__asm__ __volatile__ ("mov r6, %0" : "=r" (newregs->regs[6]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 		__asm__ __volatile__ ("mov r7, %0" : "=r" (newregs->regs[7]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 		__asm__ __volatile__ ("mov r8, %0" : "=r" (newregs->regs[8]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 		__asm__ __volatile__ ("mov r9, %0" : "=r" (newregs->regs[9]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 		__asm__ __volatile__ ("mov r10, %0" : "=r" (newregs->regs[10]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 		__asm__ __volatile__ ("mov r11, %0" : "=r" (newregs->regs[11]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 		__asm__ __volatile__ ("mov r12, %0" : "=r" (newregs->regs[12]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 		__asm__ __volatile__ ("mov r13, %0" : "=r" (newregs->regs[13]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 		__asm__ __volatile__ ("mov r14, %0" : "=r" (newregs->regs[14]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 		__asm__ __volatile__ ("mov r15, %0" : "=r" (newregs->regs[15]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 		__asm__ __volatile__ ("sts pr, %0" : "=r" (newregs->pr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 		__asm__ __volatile__ ("sts macl, %0" : "=r" (newregs->macl));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 		__asm__ __volatile__ ("sts mach, %0" : "=r" (newregs->mach));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 		__asm__ __volatile__ ("stc gbr, %0" : "=r" (newregs->gbr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 		__asm__ __volatile__ ("stc sr, %0" : "=r" (newregs->sr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 		newregs->pc = _THIS_IP_;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static inline void reserve_crashkernel(void) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #endif /* CONFIG_KEXEC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #endif /* __ASM_SH_KEXEC_H */