Merge tag 'xtensa-next-20140503' of git://github.com/czankel/xtensa-linux

Pull Xtensa fixes from Chris Zankel:
 - Fixes allmodconfig, allnoconfig builds
 - Adds highmem support
 - Enables build-time exception table sorting.

* tag 'xtensa-next-20140503' of git://github.com/czankel/xtensa-linux:
  xtensa: ISS: don't depend on CONFIG_TTY
  xtensa: xt2000: drop redundant sysmem initialization
  xtensa: add support for KC705
  xtensa: xtfpga: introduce SoC I/O bus
  xtensa: add HIGHMEM support
  xtensa: optimize local_flush_tlb_kernel_range
  xtensa: dump sysmem from the bootmem_init
  xtensa: handle memmap kernel option
  xtensa: keep sysmem banks ordered in mem_reserve
  xtensa: keep sysmem banks ordered in add_sysmem_bank
  xtensa: split bootparam and kernel meminfo
  xtensa: enable sorting extable at build time
  xtensa: export __{invalidate,flush}_dcache_range
  xtensa: Export __invalidate_icache_range

3 files changed, 33 insertions, 35 deletions

diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index 84fe931..9757bb7 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -50,6 +50,7 @@
 #include <asm/param.h>
 #include <asm/traps.h>
 #include <asm/smp.h>
+#include <asm/sysmem.h>
 
 #include <platform/hardware.h>
 
@@ -88,12 +89,6 @@ static char __initdata command_line[COMMAND_LINE_SIZE];
 static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
 #endif
 
-sysmem_info_t __initdata sysmem;
-
-extern int mem_reserve(unsigned long, unsigned long, int);
-extern void bootmem_init(void);
-extern void zones_init(void);
-
 /*
  * Boot parameter parsing.
  *
@@ -113,31 +108,14 @@ typedef struct tagtable {
 
 /* parse current tag */
 
-static int __init add_sysmem_bank(unsigned long type, unsigned long start,
-		unsigned long end)
-{
-	if (sysmem.nr_banks >= SYSMEM_BANKS_MAX) {
-		printk(KERN_WARNING
-				"Ignoring memory bank 0x%08lx size %ldKB\n",
-				start, end - start);
-		return -EINVAL;
-	}
-	sysmem.bank[sysmem.nr_banks].type  = type;
-	sysmem.bank[sysmem.nr_banks].start = PAGE_ALIGN(start);
-	sysmem.bank[sysmem.nr_banks].end   = end & PAGE_MASK;
-	sysmem.nr_banks++;
-
-	return 0;
-}
-
 static int __init parse_tag_mem(const bp_tag_t *tag)
 {
-	meminfo_t *mi = (meminfo_t *)(tag->data);
+	struct bp_meminfo *mi = (struct bp_meminfo *)(tag->data);
 
 	if (mi->type != MEMORY_TYPE_CONVENTIONAL)
 		return -1;
 
-	return add_sysmem_bank(mi->type, mi->start, mi->end);
+	return add_sysmem_bank(mi->start, mi->end);
 }
 
 __tagtable(BP_TAG_MEMORY, parse_tag_mem);
@@ -146,8 +124,8 @@ __tagtable(BP_TAG_MEMORY, parse_tag_mem);
 
 static int __init parse_tag_initrd(const bp_tag_t* tag)
 {
-	meminfo_t* mi;
-	mi = (meminfo_t*)(tag->data);
+	struct bp_meminfo *mi = (struct bp_meminfo *)(tag->data);
+
 	initrd_start = (unsigned long)__va(mi->start);
 	initrd_end = (unsigned long)__va(mi->end);
 
@@ -255,7 +233,7 @@ void __init early_init_dt_add_memory_arch(u64 base, u64 size)
 		return;
 
 	size &= PAGE_MASK;
-	add_sysmem_bank(MEMORY_TYPE_CONVENTIONAL, base, base + size);
+	add_sysmem_bank(base, base + size);
 }
 
 void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
@@ -292,8 +270,6 @@ device_initcall(xtensa_device_probe);
 
 void __init init_arch(bp_tag_t *bp_start)
 {
-	sysmem.nr_banks = 0;
-
 	/* Parse boot parameters */
 
 	if (bp_start)
@@ -304,10 +280,9 @@ void __init init_arch(bp_tag_t *bp_start)
 #endif
 
 	if (sysmem.nr_banks == 0) {
-		sysmem.nr_banks = 1;
-		sysmem.bank[0].start = PLATFORM_DEFAULT_MEM_START;
-		sysmem.bank[0].end = PLATFORM_DEFAULT_MEM_START
-				     + PLATFORM_DEFAULT_MEM_SIZE;
+		add_sysmem_bank(PLATFORM_DEFAULT_MEM_START,
+				PLATFORM_DEFAULT_MEM_START +
+				PLATFORM_DEFAULT_MEM_SIZE);
 	}
 
 #ifdef CONFIG_CMDLINE_BOOL
@@ -487,7 +462,7 @@ void __init setup_arch(char **cmdline_p)
 #ifdef CONFIG_BLK_DEV_INITRD
 	if (initrd_start < initrd_end) {
 		initrd_is_mapped = mem_reserve(__pa(initrd_start),
-					       __pa(initrd_end), 0);
+					       __pa(initrd_end), 0) == 0;
 		initrd_below_start_ok = 1;
 	} else {
 		initrd_start = 0;
@@ -532,6 +507,7 @@ void __init setup_arch(char **cmdline_p)
 		    __pa(&_Level6InterruptVector_text_end), 0);
 #endif
 
+	parse_early_param();
 	bootmem_init();
 
 	unflatten_and_copy_device_tree();
diff --git a/arch/xtensa/kernel/smp.c b/arch/xtensa/kernel/smp.c
index aa8bd87..40b5a37 100644
--- a/arch/xtensa/kernel/smp.c
+++ b/arch/xtensa/kernel/smp.c
@@ -496,6 +496,21 @@ void flush_tlb_range(struct vm_area_struct *vma,
 	on_each_cpu(ipi_flush_tlb_range, &fd, 1);
 }
 
+static void ipi_flush_tlb_kernel_range(void *arg)
+{
+	struct flush_data *fd = arg;
+	local_flush_tlb_kernel_range(fd->addr1, fd->addr2);
+}
+
+void flush_tlb_kernel_range(unsigned long start, unsigned long end)
+{
+	struct flush_data fd = {
+		.addr1 = start,
+		.addr2 = end,
+	};
+	on_each_cpu(ipi_flush_tlb_kernel_range, &fd, 1);
+}
+
 /* Cache flush functions */
 
 static void ipi_flush_cache_all(void *arg)
diff --git a/arch/xtensa/kernel/xtensa_ksyms.c b/arch/xtensa/kernel/xtensa_ksyms.c
index 80b33ed..4d2872f 100644
--- a/arch/xtensa/kernel/xtensa_ksyms.c
+++ b/arch/xtensa/kernel/xtensa_ksyms.c
@@ -20,6 +20,7 @@
 #include <linux/in6.h>
 
 #include <asm/uaccess.h>
+#include <asm/cacheflush.h>
 #include <asm/checksum.h>
 #include <asm/dma.h>
 #include <asm/io.h>
@@ -105,6 +106,7 @@ EXPORT_SYMBOL(csum_partial_copy_generic);
  * Architecture-specific symbols
  */
 EXPORT_SYMBOL(__xtensa_copy_user);
+EXPORT_SYMBOL(__invalidate_icache_range);
 
 /*
  * Kernel hacking ...
@@ -127,3 +129,8 @@ EXPORT_SYMBOL(common_exception_return);
 #ifdef CONFIG_FUNCTION_TRACER
 EXPORT_SYMBOL(_mcount);
 #endif
+
+EXPORT_SYMBOL(__invalidate_dcache_range);
+#if XCHAL_DCACHE_IS_WRITEBACK
+EXPORT_SYMBOL(__flush_dcache_range);
+#endif