D2: Enable ARM cache coherency functions (eg. during codec load), which should eliminate data aborts/freezes on track changes. NOTE: The linker script reserves space at the end of DRAM for the TTB, but this is not currently used.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22595 a1c6a512-1295-4272-9138-f99709370657

5 files changed, 13 insertions, 1 deletions

diff --git a/apps/plugins/plugin.lds b/apps/plugins/plugin.lds
index 70bc3e06c4..f93d5d4425 100644
--- a/apps/plugins/plugin.lds
+++ b/apps/plugins/plugin.lds
@@ -61,6 +61,10 @@ OUTPUT_FORMAT(elf32-littlemips)
 #define TTB_SIZE         (0x4000) 
 #define DRAMSIZE (MEMORYSIZE * 0x100000) - STUBOFFSET - PLUGIN_BUFFER_SIZE - CODEC_SIZE - LCD_BUFFER_SIZE - TTB_SIZE
 
+#elif CONFIG_CPU==TCC7801
+#include "cpu.h"
+#define DRAMSIZE (MEMORYSIZE * 0x100000) - STUBOFFSET - PLUGIN_BUFFER_SIZE - CODEC_SIZE - TTB_SIZE
+
 #elif CONFIG_CPU==AS3525
 #include "cpu.h"
 #define DRAMORIG DRAM_ORIG
diff --git a/firmware/SOURCES b/firmware/SOURCES
index ba37745aff..3a29c25d63 100644
--- a/firmware/SOURCES
+++ b/firmware/SOURCES
@@ -1264,6 +1264,7 @@ target/arm/tcc780x/cowond2/power-cowond2.c
 target/arm/tcc780x/cowond2/powermgmt-cowond2.c
 target/arm/tcc780x/cowond2/backlight-cowond2.c
 target/arm/usb-tcc.c
+target/arm/mmu-arm.S
 #ifndef BOOTLOADER
 target/arm/tcc780x/timer-tcc780x.c
 target/arm/wmcodec-telechips.c
diff --git a/firmware/export/tcc780x.h b/firmware/export/tcc780x.h
index 497f1514e0..aca3bec2bd 100644
--- a/firmware/export/tcc780x.h
+++ b/firmware/export/tcc780x.h
@@ -21,6 +21,11 @@
 #ifndef __TCC780X_H__
 #define __TCC780X_H__
 
+#define TTB_SIZE      (0x4000)
+/* must be 16Kb (0x4000) aligned */
+#define TTB_BASE_ADDR (0x20000000 + (MEMORYSIZE*1024*1024) - TTB_SIZE)
+#define TTB_BASE      ((unsigned long *)TTB_BASE_ADDR) /* End of memory */
+
 /* General-purpose IO */
 
 #define PORTCFG0    (*(volatile unsigned long *)0xF005A000)
diff --git a/firmware/target/arm/tcc780x/app.lds b/firmware/target/arm/tcc780x/app.lds
index d62204a9a5..a742908ce1 100644
--- a/firmware/target/arm/tcc780x/app.lds
+++ b/firmware/target/arm/tcc780x/app.lds
@@ -15,7 +15,8 @@ STARTUP(target/arm/tcc780x/crt0.o)
 #define STUBOFFSET 0
 #endif
 
-#define DRAMSIZE (MEMORYSIZE * 0x100000) - PLUGINSIZE - STUBOFFSET - CODECSIZE
+#include "cpu.h"
+#define DRAMSIZE (MEMORYSIZE * 0x100000) - STUBOFFSET - PLUGINSIZE - CODECSIZE - TTB_SIZE
 
 #define DRAMORIG 0x20000000 + STUBOFFSET
 #define ITCMORIG 0x00000000
diff --git a/firmware/target/arm/tcc780x/system-target.h b/firmware/target/arm/tcc780x/system-target.h
index 6e2e7be980..fe66a6eb68 100644
--- a/firmware/target/arm/tcc780x/system-target.h
+++ b/firmware/target/arm/tcc780x/system-target.h
@@ -22,6 +22,7 @@
 #define SYSTEM_TARGET_H
 
 #include "system-arm.h"
+#include "mmu-arm.h"
 
 #define CPUFREQ_DEFAULT 32000000
 #define CPUFREQ_NORMAL  48000000