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Hi,
Im trying to find a way to remove some code which i think would not be
accepted by arm-linux, and is important for suspend/resume on ezx.
Here is the relevant code:
+++ arch/arm/mm/init.c
@@ -240,6 +240,10 @@
*/
reserve_bootmem_node(pgdat, boot_pfn << PAGE_SHIFT,
boot_pages << PAGE_SHIFT);
+#ifdef CONFIG_PXA_EZX
+ /* reserve the first page memory for exiting sleep and user off */
+ reserve_bootmem_node(pgdat, PHYS_OFFSET, PAGE_SIZE);
+#endif
#ifdef CONFIG_BLK_DEV_INITRD
/*
+++ linux-2.6.24/arch/arm/mach-pxa/pxa27x.c
@@ -231,7 +235,12 @@
void pxa27x_cpu_pm_restore(unsigned long *sleep_save)
{
/* ensure not to come back here if it wasn't intended */
+#ifdef CONFIG_PXA_EZX
+ *(unsigned long *)(phys_to_virt(RESUME_ADDR)) = 0;
+ *(unsigned long *)(phys_to_virt(FLAG_ADDR)) = OFF_FLAG;
+#else
PSPR = 0;
+#endif
/* restore registers */
RESTORE_GPLEVEL(0); RESTORE_GPLEVEL(1);
@@ -281,7 +290,13 @@
break;
case PM_SUSPEND_MEM:
/* set resume return address */
+#ifdef CONFIG_PXA_EZX
+ /* set EZX flags for blob - WM */
+ *(unsigned long *)(phys_to_virt(RESUME_ADDR)) =
virt_to_phys(pxa_cpu_resume);
+ *(unsigned long *)(phys_to_virt(FLAG_ADDR)) = SLEEP_FLAG;
+#else
PSPR = virt_to_phys(pxa_cpu_resume);
+#endif
pxa27x_cpu_suspend(PWRMODE_SLEEP);
break;
}
The problem lies on the bootloader which doesnt honor PSPR and resumes
to the address written at RESUME_ADDR on RAM.
There is no way to workaround this on blob2.
- --
Daniel Ribeiro
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