Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k

Pull m68k updates from Geert Uytterhoeven:
 - Zorro bus cleanups and UAPI revival
 - Bootinfo cleanups and UAPI revival
 - Kexec support
 - Memory size reductions and bug fixes for multi-platform kernels
 - Polled interrupt support for Atari EtherNAT, EtherNEC and NetUSBee
 - Machine-specific random_get_entropy()
 - Defconfig updates and cleanups

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: (46 commits)
  m68k/mac: Make SCC reset work more reliably
  m68k/irq - Use polled IRQ flag for MFP timer cascaded interrupts
  m68k: Update defconfigs for v3.13-rc1
  m68k/defconfig: Enable EARLY_PRINTK
  m68k/mm: kmap spelling/grammar fixes
  m68k: Convert arch/m68k/kernel/traps.c to pr_*()
  m68k: Convert arch/m68k/mm/fault.c to pr_*()
  m68k/mm: Check for mm != NULL in do_page_fault() debug code
  m68k/defconfig: Disable /sbin/hotplug fork-bomb by default
  m68k/atari: Hide RTC_PORT() macro from rtc-cmos
  m68k/amiga,atari: Fix specifying multiple debug= parameters
  m68k/defconfig: Use ext4 for ext2/ext3 file systems
  m68k: Add support to export bootinfo in procfs
  m68k: Add kexec support
  m68k/mac: Mark Mac IIsi ADB driver BROKEN
  m68k/amiga: Provide mach_random_get_entropy()
  m68k: Add infrastructure for machine-specific random_get_entropy()
  m68k/atari: Call paging_init() before nf_init()
  m68k: Remove superfluous inclusions of <asm/bootinfo.h>
  m68k/UAPI: Use proper types (endianness/size) in <asm/bootinfo*.h>
  ...

1 files changed, 80 insertions, 0 deletions

diff --git a/arch/m68k/kernel/bootinfo_proc.c b/arch/m68k/kernel/bootinfo_proc.c
new file mode 100644
index 00000000000..7ee853e1432
--- /dev/null
+++ b/arch/m68k/kernel/bootinfo_proc.c
@@ -0,0 +1,80 @@
+/*
+ * Based on arch/arm/kernel/atags_proc.c
+ */
+
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/printk.h>
+#include <linux/proc_fs.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+
+#include <asm/bootinfo.h>
+#include <asm/byteorder.h>
+
+
+static char bootinfo_tmp[1536] __initdata;
+
+static void *bootinfo_copy;
+static size_t bootinfo_size;
+
+static ssize_t bootinfo_read(struct file *file, char __user *buf,
+			  size_t count, loff_t *ppos)
+{
+	return simple_read_from_buffer(buf, count, ppos, bootinfo_copy,
+				       bootinfo_size);
+}
+
+static const struct file_operations bootinfo_fops = {
+	.read = bootinfo_read,
+	.llseek = default_llseek,
+};
+
+void __init save_bootinfo(const struct bi_record *bi)
+{
+	const void *start = bi;
+	size_t size = sizeof(bi->tag);
+
+	while (be16_to_cpu(bi->tag) != BI_LAST) {
+		uint16_t n = be16_to_cpu(bi->size);
+		size += n;
+		bi = (struct bi_record *)((unsigned long)bi + n);
+	}
+
+	if (size > sizeof(bootinfo_tmp)) {
+		pr_err("Cannot save %zu bytes of bootinfo\n", size);
+		return;
+	}
+
+	pr_info("Saving %zu bytes of bootinfo\n", size);
+	memcpy(bootinfo_tmp, start, size);
+	bootinfo_size = size;
+}
+
+static int __init init_bootinfo_procfs(void)
+{
+	/*
+	 * This cannot go into save_bootinfo() because kmalloc and proc don't
+	 * work yet when it is called.
+	 */
+	struct proc_dir_entry *pde;
+
+	if (!bootinfo_size)
+		return -EINVAL;
+
+	bootinfo_copy = kmalloc(bootinfo_size, GFP_KERNEL);
+	if (!bootinfo_copy)
+		return -ENOMEM;
+
+	memcpy(bootinfo_copy, bootinfo_tmp, bootinfo_size);
+
+	pde = proc_create_data("bootinfo", 0400, NULL, &bootinfo_fops, NULL);
+	if (!pde) {
+		kfree(bootinfo_copy);
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+arch_initcall(init_bootinfo_procfs);