Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / powerpc / cpu / ppc4xx / kgdb.S

diff --git a/qemu/roms/u-boot/arch/powerpc/cpu/ppc4xx/kgdb.S b/qemu/roms/u-boot/arch/powerpc/cpu/ppc4xx/kgdb.S
new file mode 100644 (file)
index 0000000..f274c5d
--- /dev/null
+++ b/qemu/roms/u-boot/arch/powerpc/cpu/ppc4xx/kgdb.S
@@ -0,0 +1,61 @@
+/*
+ *  Copyright (C) 2000 Murray Jensen <Murray.Jensen@cmst.csiro.au>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <config.h>
+#include <command.h>
+#include <asm/ppc4xx.h>
+#include <version.h>
+
+#define CONFIG_405GP 1         /* needed for Linux kernel header files */
+
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+
+#include <asm/cache.h>
+#include <asm/mmu.h>
+
+#if defined(CONFIG_CMD_KGDB)
+ /*
+ * cache flushing routines for kgdb
+ */
+
+       .globl  kgdb_flush_cache_all
+kgdb_flush_cache_all:
+       /* icache */
+       iccci   r0,r0           /* iccci invalidates the entire I cache */
+       /* dcache */
+       addi    r6,0,0x0000     /* clear GPR 6 */
+       addi    r7,r0, 128      /* do loop for # of dcache lines */
+                               /* NOTE: dccci invalidates both */
+       mtctr   r7              /* ways in the D cache */
+..dcloop:
+       dccci   0,r6            /* invalidate line */
+       addi    r6,r6, 32       /* bump to next line */
+       bdnz    ..dcloop
+       blr
+
+       .globl  kgdb_flush_cache_range
+kgdb_flush_cache_range:
+       li      r5,L1_CACHE_BYTES-1
+       andc    r3,r3,r5
+       subf    r4,r3,r4
+       add     r4,r4,r5
+       srwi.   r4,r4,L1_CACHE_SHIFT
+       beqlr
+       mtctr   r4
+       mr      r6,r3
+1:     dcbst   0,r3
+       addi    r3,r3,L1_CACHE_BYTES
+       bdnz    1b
+       sync                    /* wait for dcbst's to get to ram */
+       mtctr   r4
+2:     icbi    0,r6
+       addi    r6,r6,L1_CACHE_BYTES
+       bdnz    2b
+       SYNC
+       blr
+
+#endif