Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / post / cpu / ppc4xx / ocm.c

diff --git a/qemu/roms/u-boot/post/cpu/ppc4xx/ocm.c b/qemu/roms/u-boot/post/cpu/ppc4xx/ocm.c
new file mode 100644 (file)
index 0000000..bbf2d9a
--- /dev/null
+++ b/qemu/roms/u-boot/post/cpu/ppc4xx/ocm.c
@@ -0,0 +1,73 @@
+/*
+ * (C) Copyright 2008 Ilya Yanok, EmCraft Systems, yanok@emcraft.com
+ *
+ * Developed for DENX Software Engineering GmbH
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+#include <common.h>
+
+/*
+ * This test attempts to verify on-chip memory (OCM). Result is written
+ * to the scratch register and if test succeed it won't be run till next
+ * power on.
+ */
+
+#include <post.h>
+
+#include <asm/io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define OCM_TEST_PATTERN1      0x55555555
+#define OCM_TEST_PATTERN2      0xAAAAAAAA
+
+#if CONFIG_POST & CONFIG_SYS_POST_OCM
+
+static uint ocm_status_read(void)
+{
+       return in_be32((void *)CONFIG_SYS_OCM_STATUS_ADDR) &
+               CONFIG_SYS_OCM_STATUS_MASK;
+}
+
+static void ocm_status_write(uint value)
+{
+       out_be32((void *)CONFIG_SYS_OCM_STATUS_ADDR, value |
+               (in_be32((void *)CONFIG_SYS_OCM_STATUS_ADDR) &
+                       ~CONFIG_SYS_OCM_STATUS_MASK));
+}
+
+static inline int ocm_test_word(uint value, uint *address)
+{
+       uint read_value;
+
+       *address = value;
+       sync();
+       read_value = *address;
+
+       return (read_value != value);
+}
+
+int ocm_post_test(int flags)
+{
+       uint   old_value;
+       int    ret = 0;
+       uint  *address = (uint*)CONFIG_SYS_OCM_BASE;
+
+       if (ocm_status_read() == CONFIG_SYS_OCM_STATUS_OK)
+               return 0;
+       for (; address < (uint*)(CONFIG_SYS_OCM_BASE + CONFIG_SYS_OCM_SIZE); address++) {
+               old_value = *address;
+               if (ocm_test_word(OCM_TEST_PATTERN1, address) ||
+                               ocm_test_word(OCM_TEST_PATTERN2, address)) {
+                       ret = 1;
+                       *address = old_value;
+                       printf("OCM POST failed at %p!\n", address);
+                       break;
+               }
+               *address = old_value;
+       }
+       ocm_status_write(ret ? CONFIG_SYS_OCM_STATUS_FAIL : CONFIG_SYS_OCM_STATUS_OK);
+       return ret;
+}
+#endif /* CONFIG_POST & CONFIG_SYS_POST_OCM */