1 files changed, 86 insertions, 0 deletions
diff --git a/roms/skiboot/external/common/arch_flash_arm_io.h b/roms/skiboot/external/common/arch_flash_arm_io.h
new file mode 100644
index 000000000..85dbaf482
--- /dev/null
+++ b/roms/skiboot/external/common/arch_flash_arm_io.h
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+/*
+ * Copyright 2015 IBM Corp.
+ */
+#ifndef __IO_H
+#define __IO_H
+
+#include <assert.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+#include <libflash/libflash.h>
+
+/* AST AHB register base */
+#define AHB_REGS_BASE		0x1E600000
+#define AHB_REGS_SIZE		0x00200000
+
+/* AST GPIO control regs */
+#define GPIO_CTRL_BASE		0x1E780000
+#define GPIO_CTRL_SIZE		0x1000
+
+/* AST AHB mapping of PNOR */
+#define PNOR_FLASH_BASE		0x30000000
+#define PNOR_FLASH_SIZE		0x04000000
+
+/* AST AHB mapping of BMC flash */
+#define BMC_FLASH_BASE		0x20000000
+#define BMC_FLASH_SIZE		0x04000000
+
+/* Address of flash mapping on LPC FW space */
+#define LPC_FLASH_BASE		0x0e000000
+#define LPC_CTRL_BASE		0x1e789000
+
+static inline uint8_t readb(void *addr)
+{
+	asm volatile("" : : : "memory");
+	return *(volatile uint8_t *)addr;
+}
+
+static inline uint16_t readw(void *addr)
+{
+	asm volatile("" : : : "memory");
+	return *(volatile uint16_t *)addr;
+}
+
+static inline uint32_t readl(void *addr)
+{
+	asm volatile("" : : : "memory");
+	return *(volatile uint32_t *)addr;
+}
+
+static inline void writeb(uint8_t val, void *addr)
+{
+	asm volatile("" : : : "memory");
+	*(volatile uint8_t *)addr = val;
+}
+
+static inline void writew(uint16_t val, void *addr)
+{
+	asm volatile("" : : : "memory");
+	*(volatile uint16_t *)addr = val;
+}
+
+static inline void writel(uint32_t val, void *addr)
+{
+	asm volatile("" : : : "memory");
+	*(volatile uint32_t *)addr = val;
+}
+
+/*
+ * AHB register and flash access
+ */
+
+extern uint32_t ast_ahb_readl(uint32_t offset);
+extern void ast_ahb_writel(uint32_t val, uint32_t offset);
+extern int ast_copy_to_ahb(uint32_t reg, const void *src, uint32_t len);
+extern int ast_copy_from_ahb(void *dst, uint32_t reg, uint32_t len);
+
+static inline void check_platform(bool *has_sfc, bool *has_ast)
+{
+	*has_sfc = false;
+	*has_ast = true;
+}
+
+#endif /* __IO_H */
+