diff options
Diffstat (limited to 'arch/arm/boot/compressed/head.S')
| -rw-r--r-- | arch/arm/boot/compressed/head.S | 74 |
1 files changed, 35 insertions, 39 deletions
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index 434a16982e34..2e04ec5b5446 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -28,19 +28,19 @@ #if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K) || defined(CONFIG_CPU_V7) .macro loadsp, rb, tmp1, tmp2 .endm - .macro writeb, ch, rb + .macro writeb, ch, rb, tmp mcr p14, 0, \ch, c0, c5, 0 .endm #elif defined(CONFIG_CPU_XSCALE) .macro loadsp, rb, tmp1, tmp2 .endm - .macro writeb, ch, rb + .macro writeb, ch, rb, tmp mcr p14, 0, \ch, c8, c0, 0 .endm #else .macro loadsp, rb, tmp1, tmp2 .endm - .macro writeb, ch, rb + .macro writeb, ch, rb, tmp mcr p14, 0, \ch, c1, c0, 0 .endm #endif @@ -49,8 +49,13 @@ #include CONFIG_DEBUG_LL_INCLUDE - .macro writeb, ch, rb + .macro writeb, ch, rb, tmp +#ifdef CONFIG_DEBUG_UART_FLOW_CONTROL + waituartcts \tmp, \rb +#endif + waituarttxrdy \tmp, \rb senduart \ch, \rb + busyuart \tmp, \rb .endm #if defined(CONFIG_ARCH_SA1100) @@ -81,42 +86,11 @@ bl phex .endm - .macro debug_reloc_start -#ifdef DEBUG - kputc #'\n' - kphex r6, 8 /* processor id */ - kputc #':' - kphex r7, 8 /* architecture id */ -#ifdef CONFIG_CPU_CP15 - kputc #':' - mrc p15, 0, r0, c1, c0 - kphex r0, 8 /* control reg */ -#endif - kputc #'\n' - kphex r5, 8 /* decompressed kernel start */ - kputc #'-' - kphex r9, 8 /* decompressed kernel end */ - kputc #'>' - kphex r4, 8 /* kernel execution address */ - kputc #'\n' -#endif - .endm - - .macro debug_reloc_end -#ifdef DEBUG - kphex r5, 8 /* end of kernel */ - kputc #'\n' - mov r0, r4 - bl memdump /* dump 256 bytes at start of kernel */ -#endif - .endm - /* * Debug kernel copy by printing the memory addresses involved */ .macro dbgkc, begin, end, cbegin, cend #ifdef DEBUG - kputc #'\n' kputc #'C' kputc #':' kputc #'0' @@ -136,7 +110,28 @@ kputc #'x' kphex \cend, 8 /* End of kernel copy */ kputc #'\n' - kputc #'\r' +#endif + .endm + + /* + * Debug print of the final appended DTB location + */ + .macro dbgadtb, begin, end +#ifdef DEBUG + kputc #'D' + kputc #'T' + kputc #'B' + kputc #':' + kputc #'0' + kputc #'x' + kphex \begin, 8 /* Start of appended DTB */ + kputc #' ' + kputc #'(' + kputc #'0' + kputc #'x' + kphex \end, 8 /* End of appended DTB */ + kputc #')' + kputc #'\n' #endif .endm @@ -303,7 +298,7 @@ restart: adr r0, LC1 #ifndef CONFIG_ZBOOT_ROM /* malloc space is above the relocated stack (64k max) */ - add r10, sp, #0x10000 + add r10, sp, #MALLOC_SIZE #else /* * With ZBOOT_ROM the bss/stack is non relocatable, @@ -357,6 +352,7 @@ restart: adr r0, LC1 mov r5, r5, ror #8 eor r5, r5, r1, lsr #8 #endif + dbgadtb r6, r5 /* 50% DTB growth should be good enough */ add r5, r5, r5, lsr #1 /* preserve 64-bit alignment */ @@ -614,7 +610,7 @@ not_relocated: mov r0, #0 */ mov r0, r4 mov r1, sp @ malloc space above stack - add r2, sp, #0x10000 @ 64k max + add r2, sp, #MALLOC_SIZE @ 64k max mov r3, r7 bl decompress_kernel @@ -1356,7 +1352,7 @@ puts: loadsp r3, r2, r1 1: ldrb r2, [r0], #1 teq r2, #0 moveq pc, lr -2: writeb r2, r3 +2: writeb r2, r3, r1 mov r1, #0x00020000 3: subs r1, r1, #1 bne 3b |