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authorKyösti Mälkki <kyosti.malkki@gmail.com>2019-03-20 20:38:00 +0200
committerTimothy Pearson <tpearson@raptorengineering.com>2019-03-21 15:58:34 +0000
commitceb89fb45427ea4f01fd46eba7f6fe2663351848 (patch)
treeb70e31aabef74fbb1b0448a528673e476812eb8f /src/arch/ppc64
parentfb83ff1a8b1bae3e0e5cb8d7228f96196f26f077 (diff)
downloadcoreboot-ceb89fb45427ea4f01fd46eba7f6fe2663351848.tar.xz
arch/ppc64: Add <arch/mmio.h> stubs
The work may be incomplete, we only have an emulation power8 at the moment in the tree. Change-Id: Icdaa0995c8610dcc636923cc79b8455dfaeaa057 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/31996 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Timothy Pearson <tpearson@raptorengineering.com>
Diffstat (limited to 'src/arch/ppc64')
-rw-r--r--src/arch/ppc64/include/arch/mmio.h53
1 files changed, 53 insertions, 0 deletions
diff --git a/src/arch/ppc64/include/arch/mmio.h b/src/arch/ppc64/include/arch/mmio.h
new file mode 100644
index 0000000000..8ffb81691a
--- /dev/null
+++ b/src/arch/ppc64/include/arch/mmio.h
@@ -0,0 +1,53 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.
+ */
+
+#ifndef __ARCH_MMIO_H__
+#define __ARCH_MMIO_H__
+
+#include <stdint.h>
+
+/* NOTE: These are just stubs; if the architecture requires special
+ * care to avoid posted writes or cachelines, it is not yet done here.
+ */
+
+static inline uint8_t read8(const volatile void *addr)
+{
+ return *(volatile uint8_t *)addr;
+}
+
+static inline uint16_t read16(const volatile void *addr)
+{
+ return *(volatile uint16_t *)addr;
+}
+
+static inline uint32_t read32(const volatile void *addr)
+{
+ return *(volatile uint32_t *)addr;
+}
+
+static inline void write8(volatile void *addr, uint8_t val)
+{
+ *(volatile uint8_t *)addr = val;
+}
+
+static inline void write16(volatile void *addr, uint16_t val)
+{
+ *(volatile uint16_t *)addr = val;
+}
+
+static inline void write32(volatile void *addr, uint32_t val)
+{
+ *(volatile uint32_t *)addr = val;
+}
+
+#endif /* __ARCH_MMIO_H__ */