Added missing tegra files.HEADmaster

1 files changed, 68 insertions, 0 deletions

diff --git a/drivers/media/video/tegra/avp/headavp.S b/drivers/media/video/tegra/avp/headavp.S
new file mode 100644
index 00000000000..c1f8e9fea1c
--- /dev/null
+++ b/drivers/media/video/tegra/avp/headavp.S
@@ -0,0 +1,68 @@
+/*
+ * arch/arm/mach-tegra/headavp.S
+ *
+ * AVP kernel launcher stub; programs the AVP MMU and jumps to the
+ * kernel code. Must use ONLY ARMv4 instructions, and must be compiled
+ * in ARM mode.
+ *
+ * Copyright (c) 2010, NVIDIA Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+  */
+
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+#include "headavp.h"
+
+#define PTE0_COMPARE    0
+/* the default translation will translate any VA within
+ * 0x0010:0000..0x001f:ffff to the (megabyte-aligned) value written to
+ * _tegra_avp_boot_stub_data.map_phys_addr
+ */
+#define PTE0_DEFAULT    (AVP_KERNEL_VIRT_BASE | 0x3ff0)
+
+#define PTE0_TRANSLATE  4
+
+#define TRANSLATE_DATA  (1 << 11)
+#define TRANSLATE_CODE  (1 << 10)
+#define TRANSLATE_WR    (1 << 9)
+#define TRANSLATE_RD    (1 << 8)
+#define TRANSLATE_HIT   (1 << 7)
+#define TRANSLATE_EN    (1 << 2)
+
+#define TRANSLATE_OPT (TRANSLATE_DATA | TRANSLATE_CODE | TRANSLATE_WR | \
+                       TRANSLATE_RD | TRANSLATE_HIT)
+
+ENTRY(_tegra_avp_boot_stub)
+        adr     r4, _tegra_avp_boot_stub_data
+        ldmia   r4, {r0-r3}
+#ifdef CONFIG_TEGRA_AVP_KERNEL_ON_MMU
+        str     r2, [r0, #PTE0_COMPARE]
+        bic     r3, r3, #0xff0
+        bic     r3, r3, #0x00f
+        orr     r3, r3, #TRANSLATE_OPT
+        orr     r3, r3, #TRANSLATE_EN
+        str     r3, [r0, #PTE0_TRANSLATE]
+#endif
+        bx      r1
+        b       .
+ENDPROC(_tegra_avp_boot_stub)
+        .type   _tegra_avp_boot_stub_data, %object
+ENTRY(_tegra_avp_boot_stub_data)
+        .long   AVP_MMU_TLB_BASE
+        .long   0xdeadbeef
+        .long   PTE0_DEFAULT
+        .long   0xdeadd00d
+        .size   _tegra_avp_boot_stub_data, . - _tegra_avp_boot_stub_data