#include <asm/irq.h>
#include <asm/setup.h>
#include <asm/clock.h>
+#include <asm/smp.h>
#include <asm/mmu_context.h>
/*
free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(pages));
}
-#ifdef CONFIG_KEXEC
-static void __init reserve_crashkernel(void)
+static void __init check_for_initrd(void)
{
- unsigned long long free_mem;
- unsigned long long crash_size, crash_base;
- void *vp;
- int ret;
-
- free_mem = ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT;
-
- ret = parse_crashkernel(boot_command_line, free_mem,
- &crash_size, &crash_base);
- if (ret == 0 && crash_size) {
- if (crash_base <= 0) {
- vp = alloc_bootmem_nopanic(crash_size);
- if (!vp) {
- printk(KERN_INFO "crashkernel allocation "
- "failed\n");
- return;
- }
- crash_base = __pa(vp);
- } else if (reserve_bootmem(crash_base, crash_size,
- BOOTMEM_EXCLUSIVE) < 0) {
- printk(KERN_INFO "crashkernel reservation failed - "
- "memory is in use\n");
- return;
- }
-
- printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
- "for crashkernel (System RAM: %ldMB)\n",
- (unsigned long)(crash_size >> 20),
- (unsigned long)(crash_base >> 20),
- (unsigned long)(free_mem >> 20));
- crashk_res.start = crash_base;
- crashk_res.end = crash_base + crash_size - 1;
- insert_resource(&iomem_resource, &crashk_res);
+#ifdef CONFIG_BLK_DEV_INITRD
+ unsigned long start, end;
+
+ /*
+ * Check for the rare cases where boot loaders adhere to the boot
+ * ABI.
+ */
+ if (!LOADER_TYPE || !INITRD_START || !INITRD_SIZE)
+ goto disable;
+
+ start = INITRD_START + __MEMORY_START;
+ end = start + INITRD_SIZE;
+
+ if (unlikely(end <= start))
+ goto disable;
+ if (unlikely(start & ~PAGE_MASK)) {
+ pr_err("initrd must be page aligned\n");
+ goto disable;
}
-}
-#else
-static inline void __init reserve_crashkernel(void)
-{}
+
+ if (unlikely(start < PAGE_OFFSET)) {
+ pr_err("initrd start < PAGE_OFFSET\n");
+ goto disable;
+ }
+
+ if (unlikely(end > lmb_end_of_DRAM())) {
+ pr_err("initrd extends beyond end of memory "
+ "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
+ end, (unsigned long)lmb_end_of_DRAM());
+ goto disable;
+ }
+
+ /*
+ * If we got this far inspite of the boot loader's best efforts
+ * to the contrary, assume we actually have a valid initrd and
+ * fix up the root dev.
+ */
+ ROOT_DEV = Root_RAM0;
+
+ /*
+ * Address sanitization
+ */
+ initrd_start = (unsigned long)__va(__pa(start));
+ initrd_end = initrd_start + INITRD_SIZE;
+
+ reserve_bootmem(__pa(initrd_start), INITRD_SIZE, BOOTMEM_DEFAULT);
+
+ return;
+
+disable:
+ pr_info("initrd disabled\n");
+ initrd_start = initrd_end = 0;
#endif
+}
void __cpuinit calibrate_delay(void)
{
sparse_memory_present_with_active_regions(0);
-#ifdef CONFIG_BLK_DEV_INITRD
- ROOT_DEV = Root_RAM0;
-
- if (LOADER_TYPE && INITRD_START) {
- unsigned long initrd_start_phys = INITRD_START + __MEMORY_START;
-
- if (initrd_start_phys + INITRD_SIZE <= PFN_PHYS(max_low_pfn)) {
- reserve_bootmem(initrd_start_phys, INITRD_SIZE,
- BOOTMEM_DEFAULT);
- initrd_start = (unsigned long)__va(initrd_start_phys);
- initrd_end = initrd_start + INITRD_SIZE;
- } else {
- printk("initrd extends beyond end of memory "
- "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
- initrd_start_phys + INITRD_SIZE,
- (unsigned long)PFN_PHYS(max_low_pfn));
- initrd_start = 0;
- }
- }
-#endif
+ check_for_initrd();
reserve_crashkernel();
}
if (likely(sh_mv.mv_setup))
sh_mv.mv_setup(cmdline_p);
-#ifdef CONFIG_SMP
plat_smp_setup();
-#endif
}
/* processor boot mode configuration */