This GCC patch is from the ath9k-htc-firmware repository (version 1.3.2).
Not applying it (apparently) leads to miscompiled firmware, and loading it
fails with a "Target is unresponsive" message from the 'ath9k_htc' module.
From c7162b8a3db42e7faf47606d3aa3dd61e64aea17 Mon Sep 17 00:00:00 2001
From: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Date: Mon, 7 Jan 2013 16:06:28 +0530
Subject: [PATCH] gcc: AR9271/AR7010 config
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
---
include/xtensa-config.h | 36 +++++++++++++++++-------------------
1 file changed, 17 insertions(+), 19 deletions(-)
diff --git a/include/xtensa-config.h b/include/xtensa-config.h
index 30f4f41..fe9b051 100644
--- a/include/xtensa-config.h
+++ b/include/xtensa-config.h
@@ -44,10 +44,7 @@
#define XCHAL_HAVE_L32R 1
#undef XSHAL_USE_ABSOLUTE_LITERALS
-#define XSHAL_USE_ABSOLUTE_LITERALS 0
-
-#undef XSHAL_HAVE_TEXT_SECTION_LITERALS
-#define XSHAL_HAVE_TEXT_SECTION_LITERALS 1 /* Set if there is some memory that allows both code and literals. */
+#define XSHAL_USE_ABSOLUTE_LITERALS 1
#undef XCHAL_HAVE_MAC16
#define XCHAL_HAVE_MAC16 0
@@ -59,10 +56,10 @@
#define XCHAL_HAVE_MUL32 1
#undef XCHAL_HAVE_MUL32_HIGH
-#define XCHAL_HAVE_MUL32_HIGH 0
+#define XCHAL_HAVE_MUL32_HIGH 1
#undef XCHAL_HAVE_DIV32
-#define XCHAL_HAVE_DIV32 1
+#define XCHAL_HAVE_DIV32 0
#undef XCHAL_HAVE_NSA
#define XCHAL_HAVE_NSA 1
@@ -103,8 +100,6 @@
#undef XCHAL_HAVE_FP_RSQRT
#define XCHAL_HAVE_FP_RSQRT 0
-#undef XCHAL_HAVE_DFP_accel
-#define XCHAL_HAVE_DFP_accel 0
#undef XCHAL_HAVE_WINDOWED
#define XCHAL_HAVE_WINDOWED 1
@@ -119,32 +114,32 @@
#undef XCHAL_ICACHE_SIZE
-#define XCHAL_ICACHE_SIZE 16384
+#define XCHAL_ICACHE_SIZE 0
#undef XCHAL_DCACHE_SIZE
-#define XCHAL_DCACHE_SIZE 16384
+#define XCHAL_DCACHE_SIZE 0
#undef XCHAL_ICACHE_LINESIZE
-#define XCHAL_ICACHE_LINESIZE 32
+#define XCHAL_ICACHE_LINESIZE 16
#undef XCHAL_DCACHE_LINESIZE
-#define XCHAL_DCACHE_LINESIZE 32
+#define XCHAL_DCACHE_LINESIZE 16
#undef XCHAL_ICACHE_LINEWIDTH
-#define XCHAL_ICACHE_LINEWIDTH 5
+#define XCHAL_ICACHE_LINEWIDTH 4
#undef XCHAL_DCACHE_LINEWIDTH
-#define XCHAL_DCACHE_LINEWIDTH 5
+#define XCHAL_DCACHE_LINEWIDTH 4
#undef XCHAL_DCACHE_IS_WRITEBACK
-#define XCHAL_DCACHE_IS_WRITEBACK 1
+#define XCHAL_DCACHE_IS_WRITEBACK 0
#undef XCHAL_HAVE_MMU
#define XCHAL_HAVE_MMU 1
#undef XCHAL_MMU_MIN_PTE_PAGE_SIZE
-#define XCHAL_MMU_MIN_PTE_PAGE_SIZE 12
+#define XCHAL_MMU_MIN_PTE_PAGE_SIZE 29
#undef XCHAL_HAVE_DEBUG
@@ -157,8 +152,11 @@
#define XCHAL_NUM_DBREAK 2
#undef XCHAL_DEBUGLEVEL
-#define XCHAL_DEBUGLEVEL 6
+#define XCHAL_DEBUGLEVEL 4
+
+#undef XCHAL_EXCM_LEVEL
+#define XCHAL_EXCM_LEVEL 3
#undef XCHAL_MAX_INSTRUCTION_SIZE
#define XCHAL_MAX_INSTRUCTION_SIZE 3
--
1.8.1
