[ARM] 4776/1: Add HWUART clock to fix hwuart support

[linux-2.6-omap-h63xx.git] / arch / arm / kernel / head.S

diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 66db0a9bf0bcfb40c6a4834721d2fc17f4872689..7898cbc9861a9d484d655079c66b3f1e76dccd0b 100644 (file)
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -29,6 +29,10 @@
 #define KERNEL_RAM_VADDR       (PAGE_OFFSET + TEXT_OFFSET)
 #define KERNEL_RAM_PADDR       (PHYS_OFFSET + TEXT_OFFSET)
 
+#define ATAG_CORE 0x54410001
+#define ATAG_CORE_SIZE ((2*4 + 3*4) >> 2)
+
+
 /*
  * swapper_pg_dir is the virtual address of the initial page table.
  * We place the page tables 16K below KERNEL_RAM_VADDR.  Therefore, we must
@@ -61,7 +65,7 @@
  *
  * This is normally called from the decompressor code.  The requirements
  * are: MMU = off, D-cache = off, I-cache = dont care, r0 = 0,
- * r1 = machine nr.
+ * r1 = machine nr, r2 = atags pointer.
  *
  * This code is mostly position independent, so if you link the kernel at
  * 0xc0008000, you call this at __pa(0xc0008000).
@@ -73,7 +77,7 @@
  * crap here - that's what the boot loader (or in extreme, well justified
  * circumstances, zImage) is for.
  */
-       __INIT
+       .section ".text.head", "ax"
        .type   stext, %function
 ENTRY(stext)
        msr     cpsr_c, #PSR_F_BIT | PSR_I_BIT | SVC_MODE @ ensure svc mode
@@ -85,6 +89,7 @@ ENTRY(stext)
        bl      __lookup_machine_type           @ r5=machinfo
        movs    r8, r5                          @ invalid machine (r5=0)?
        beq     __error_a                       @ yes, error 'a'
+       bl      __vet_atags
        bl      __create_page_tables
 
        /*
@@ -257,7 +262,9 @@ __create_page_tables:
         * Map some ram to cover our .data and .bss areas.
         */
        orr     r3, r7, #(KERNEL_RAM_PADDR & 0xff000000)
+       .if     (KERNEL_RAM_PADDR & 0x00f00000)
        orr     r3, r3, #(KERNEL_RAM_PADDR & 0x00f00000)
+       .endif
        add     r0, r4,  #(KERNEL_RAM_VADDR & 0xff000000) >> 18
        str     r3, [r0, #(KERNEL_RAM_VADDR & 0x00f00000) >> 18]!
        ldr     r6, =(_end - 1)
@@ -274,7 +281,9 @@ __create_page_tables:
         */
        add     r0, r4, #PAGE_OFFSET >> 18
        orr     r6, r7, #(PHYS_OFFSET & 0xff000000)
-       orr     r6, r6, #(PHYS_OFFSET & 0x00e00000)
+       .if     (PHYS_OFFSET & 0x00f00000)
+       orr     r6, r6, #(PHYS_OFFSET & 0x00f00000)
+       .endif
        str     r6, [r0]
 
 #ifdef CONFIG_DEBUG_LL