I had apply this patch :
http://lists.infradead.org/pipermail/linux-arm-kernel/2010-December/036055.html
You can read the first problems here:
http://lists.linaro.org/pipermail/linaro-kernel/2014-March/012635.html
I had found a solution to this problem:
in file arch/arm/kernel/hibernate.c
You need to change in this mode:
/* Used in hibernate_asm.S */
#define USER_CONTEXT_SIZE (15 * sizeof(u32))
unsigned long saved_spsr_svc;
unsigned long saved_context_r14_svc;
unsigned long saved_context_r13_svc;
unsigned long saved_cpsr;
unsigned long saved_context_r0[USER_CONTEXT_SIZE];
static struct saved_context saved_context;
/* References to section boundaries */
extern const void __nosave_begin, __nosave_end;
the sequence is VERY IMPORTAN because in assemble file ( arch/arm/kernel/hibernate_asm.S)
load the R13 and R14 register in sequence.
==================================================================
Now I have this problems:
When resume and run this function
+ENTRY(swsusp_arch_resume)
+ /*
+ * Restore_pblist is the starting point for loaded pages
+ */
+ ldr r0, .Lrestore_pblist
+ ldr r6, [r0]
+
+.Lcopy_loop:
+ ldr r4, [r6] /* src IOW present address */
+ ldr r5, [r6, #4] /* dst IOW original address*/
+ mov r9, #1024 /* No. of entries in one page, where each entry is 4 bytes */
+
+.Lcopy_one_page:
+ /*
+ * This loop could be optimized by using stm and ldm.
+ */
+ ldr r8, [r4], #4
+ str r8, [r5], #4
+ subs r9, r9, #1
+ bne .Lcopy_one_page
+
+ /* The last field of struct pbe is a pointer to the next pbe structure */
+ ldr r6, [r6, #8]
+ cmp r6, #0
+ bne .Lcopy_loop
+
+ /*
+ * Restore SVC context
+ */
+ ldr r3, .Lsaved_context_r13_svc
+ ldmia r3, {r13-r14}
+ ldr r3, .Lsaved_spsr_svc
+ ldr r1, [r3]
+ msr spsr_cxsf, r1
+
+ mrs r0, cpsr /* Save current mode into r0 */
+
+ /*
+ * Change to system(user) mode
+ */
+ mov r1, r0
+ orr r1, r1, #0x1f
+ msr cpsr_c, r1
+
+ /*
+ * Restore User context
+ */
+ ldr r3, .Lsaved_context_r0
+ ldmia r3, {r0-r14}
+ ldr r3, .Lsaved_cpsr
+ ldr r1, [r3]
+ msr cpsr_cxsf, r1
+
+ msr cpsr_c, r0 /* Restore original mode from r0 */
+
+ /*
+ * Flush TLB (Invalidate unified TLB unlocked entries)
+ */
+ mov r1, #0
+ mcr p15, 0, r1, c8, c7, 0
+
+ /* Set the return value */
+ mov r0, #0
+
+ /* Restore return address */
+ ldr r3, .Lsaved_context_r14_svc
+ ldr lr, [r3]
+ mov pc, lr
+ENDPROC(swsusp_arch_resume)
After about 700/800 loop the function stop to work in BOLD istruction.
Have you idea for solution?
Thanks
