powerpc: Remove check for CONFIG_SERIAL_TEXT_DEBUG

The Kconfig symbol SERIAL_TEXT_DEBUG was removed from
arch/powerpc/Kconfig.debug in v2.6.22. (In v2.6.27 it was also removed
from arch/ppc/Kconfig.debug.) So the check for its macro has evaluated
to false for over five years now. Remove that check and the few lines
of code hidden behind it.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S
index 67ee0d6..7d7d863 100644 (file)
--- a/arch/powerpc/kernel/head_40x.S
+++ b/arch/powerpc/kernel/head_40x.S
@@ -930,25 +930,6 @@ initial_mmu:
        tlbwe   r4,r0,TLB_DATA          /* Load the data portion of the entry */
        tlbwe   r3,r0,TLB_TAG           /* Load the tag portion of the entry */
 
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) && defined(SERIAL_DEBUG_IO_BASE)
-
-       /* Load a TLB entry for the UART, so that ppc4xx_progress() can use
-        * the UARTs nice and early.  We use a 4k real==virtual mapping. */
-
-       lis     r3,SERIAL_DEBUG_IO_BASE@h
-       ori     r3,r3,SERIAL_DEBUG_IO_BASE@l
-       mr      r4,r3
-       clrrwi  r4,r4,12
-       ori     r4,r4,(TLB_WR|TLB_I|TLB_M|TLB_G)
-
-       clrrwi  r3,r3,12
-       ori     r3,r3,(TLB_VALID | TLB_PAGESZ(PAGESZ_4K))
-
-       li      r0,0                    /* TLB slot 0 */
-       tlbwe   r4,r0,TLB_DATA
-       tlbwe   r3,r0,TLB_TAG
-#endif /* CONFIG_SERIAL_DEBUG_TEXT && SERIAL_DEBUG_IO_BASE */
-
        isync
 
        /* Establish the exception vector base