mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-28 12:25:31 +00:00
24b776bfb6
Implement machine specific function crash_setup_regs() which is responsible for storing machine state when crash occured. Signed-off-by: Mika Westerberg <ext-mika.1.westerberg@nokia.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
#ifndef _ARM_KEXEC_H
|
|
#define _ARM_KEXEC_H
|
|
|
|
#ifdef CONFIG_KEXEC
|
|
|
|
/* Maximum physical address we can use pages from */
|
|
#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
|
|
/* Maximum address we can reach in physical address mode */
|
|
#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
|
|
/* Maximum address we can use for the control code buffer */
|
|
#define KEXEC_CONTROL_MEMORY_LIMIT (-1UL)
|
|
|
|
#define KEXEC_CONTROL_PAGE_SIZE 4096
|
|
|
|
#define KEXEC_ARCH KEXEC_ARCH_ARM
|
|
|
|
#define KEXEC_ARM_ATAGS_OFFSET 0x1000
|
|
#define KEXEC_ARM_ZIMAGE_OFFSET 0x8000
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
/**
|
|
* crash_setup_regs() - save registers for the panic kernel
|
|
* @newregs: registers are saved here
|
|
* @oldregs: registers to be saved (may be %NULL)
|
|
*
|
|
* Function copies machine registers from @oldregs to @newregs. If @oldregs is
|
|
* %NULL then current registers are stored there.
|
|
*/
|
|
static inline void crash_setup_regs(struct pt_regs *newregs,
|
|
struct pt_regs *oldregs)
|
|
{
|
|
if (oldregs) {
|
|
memcpy(newregs, oldregs, sizeof(*newregs));
|
|
} else {
|
|
__asm__ __volatile__ ("stmia %0, {r0 - r15}"
|
|
: : "r" (&newregs->ARM_r0));
|
|
__asm__ __volatile__ ("mrs %0, cpsr"
|
|
: "=r" (newregs->ARM_cpsr));
|
|
}
|
|
}
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* CONFIG_KEXEC */
|
|
|
|
#endif /* _ARM_KEXEC_H */
|