---

yaml
---
r: 199630
b: refs/heads/master
c: b3df895
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7c08ce718fd04e373d7473918ae02f1c04d5d504
+refs/heads/master: b3df895aebe091b1657a42a8c859bd49fc96646b

trunk/arch/powerpc/Kconfig

@@ -351,7 +351,7 @@ config ARCH_ENABLE_MEMORY_HOTREMOVE
 
 config KEXEC
 	bool "kexec system call (EXPERIMENTAL)"
-	depends on PPC_BOOK3S && EXPERIMENTAL
+	depends on (PPC_BOOK3S || (FSL_BOOKE && !SMP)) && EXPERIMENTAL
 	help
 	  kexec is a system call that implements the ability to shutdown your
 	  current kernel, and to start another kernel.  It is like a reboot

trunk/arch/powerpc/include/asm/kexec.h

@@ -2,6 +2,18 @@
 #define _ASM_POWERPC_KEXEC_H
 #ifdef __KERNEL__
 
+#ifdef CONFIG_FSL_BOOKE
+
+/*
+ * On FSL-BookE we setup a 1:1 mapping which covers the first 2GiB of memory
+ * and therefore we can only deal with memory within this range
+ */
+#define KEXEC_SOURCE_MEMORY_LIMIT	(2 * 1024 * 1024 * 1024UL)
+#define KEXEC_DESTINATION_MEMORY_LIMIT	(2 * 1024 * 1024 * 1024UL)
+#define KEXEC_CONTROL_MEMORY_LIMIT	(2 * 1024 * 1024 * 1024UL)
+
+#else
+
 /*
  * Maximum page that is mapped directly into kernel memory.
  * XXX: Since we copy virt we can use any page we allocate
@@ -21,6 +33,7 @@
 /* TASK_SIZE, probably left over from use_mm ?? */
 #define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE
 #endif
+#endif
 
 #define KEXEC_CONTROL_PAGE_SIZE 4096
 

trunk/arch/powerpc/kernel/crash.c

@@ -163,6 +163,7 @@ static void crash_kexec_prepare_cpus(int cpu)
 }
 
 /* wait for all the CPUs to hit real mode but timeout if they don't come in */
+#ifdef CONFIG_PPC_STD_MMU_64
 static void crash_kexec_wait_realmode(int cpu)
 {
 	unsigned int msecs;
@@ -187,6 +188,7 @@ static void crash_kexec_wait_realmode(int cpu)
 	}
 	mb();
 }
+#endif
 
 /*
  * This function will be called by secondary cpus or by kexec cpu
@@ -445,7 +447,9 @@ void default_machine_crash_shutdown(struct pt_regs *regs)
 	crash_kexec_prepare_cpus(crashing_cpu);
 	cpu_set(crashing_cpu, cpus_in_crash);
 	crash_kexec_stop_spus();
+#ifdef CONFIG_PPC_STD_MMU_64
 	crash_kexec_wait_realmode(crashing_cpu);
+#endif
 	if (ppc_md.kexec_cpu_down)
 		ppc_md.kexec_cpu_down(1, 0);
 }

trunk/arch/powerpc/kernel/fsl_booke_entry_mapping.S

@@ -159,6 +159,8 @@ skpinv:	addi	r6,r6,1				/* Increment */
 #define M_IF_SMP	0
 #endif
 
+#if defined(ENTRY_MAPPING_BOOT_SETUP)
+
 /* 6. Setup KERNELBASE mapping in TLB1[0] */
 	lis	r6,0x1000		/* Set MAS0(TLBSEL) = TLB1(1), ESEL = 0 */
 	mtspr	SPRN_MAS0,r6
@@ -174,6 +176,41 @@ skpinv:	addi	r6,r6,1				/* Increment */
 /* 7. Jump to KERNELBASE mapping */
 	lis	r6,(KERNELBASE & ~0xfff)@h
 	ori	r6,r6,(KERNELBASE & ~0xfff)@l
+
+#elif defined(ENTRY_MAPPING_KEXEC_SETUP)
+/*
+ * 6. Setup a 1:1 mapping in TLB1. Esel 0 is unsued, 1 or 2 contains the tmp
+ * mapping so we start at 3. We setup 8 mappings, each 256MiB in size. This
+ * will cover the first 2GiB of memory.
+ */
+
+	lis r10, (MAS1_VALID|MAS1_IPROT)@h
+	ori r10,r10, (MAS1_TSIZE(BOOK3E_PAGESZ_256M))@l
+	li  r11, 0
+	li  r0, 8
+	mtctr   r0
+
+next_tlb_setup:
+	addi	r0, r11, 3
+	rlwinm  r0, r0, 16, 4, 15  // Compute esel
+	rlwinm  r9, r11, 28, 0, 3   // Compute [ER]PN
+	oris    r0, r0, (MAS0_TLBSEL(1))@h
+	mtspr   SPRN_MAS0,r0
+	mtspr   SPRN_MAS1,r10
+	mtspr   SPRN_MAS2,r9
+	ori r9, r9, (MAS3_SX|MAS3_SW|MAS3_SR)
+	mtspr   SPRN_MAS3,r9
+	tlbwe
+	addi    r11, r11, 1
+	bdnz+   next_tlb_setup
+
+/* 7. Jump to our 1:1 mapping */
+	li	r6, 0
+
+#else
+	#error You need to specify the mapping or not use this at all.
+#endif
+
 	lis	r7,MSR_KERNEL@h
 	ori	r7,r7,MSR_KERNEL@l
 	bl	1f			/* Find our address */

trunk/arch/powerpc/kernel/head_fsl_booke.S

@@ -95,7 +95,9 @@ _ENTRY(_start);
 
 _ENTRY(__early_start)
 
+#define ENTRY_MAPPING_BOOT_SETUP
 #include "fsl_booke_entry_mapping.S"
+#undef ENTRY_MAPPING_BOOT_SETUP
 
 	/* Establish the interrupt vector offsets */
 	SET_IVOR(0,  CriticalInput);

trunk/arch/powerpc/kernel/misc_32.S

@@ -711,6 +711,22 @@ relocate_new_kernel:
 	/* r4 = reboot_code_buffer */
 	/* r5 = start_address      */
 
+#ifdef CONFIG_FSL_BOOKE
+
+	mr	r29, r3
+	mr	r30, r4
+	mr	r31, r5
+
+#define ENTRY_MAPPING_KEXEC_SETUP
+#include "fsl_booke_entry_mapping.S"
+#undef ENTRY_MAPPING_KEXEC_SETUP
+
+	mr      r3, r29
+	mr      r4, r30
+	mr      r5, r31
+
+	li	r0, 0
+#else
 	li	r0, 0
 
 	/*
@@ -727,6 +743,7 @@ relocate_new_kernel:
 	rfi
 
 1:
+#endif
 	/* from this point address translation is turned off */
 	/* and interrupts are disabled */