1 files changed, 70 insertions, 0 deletions
diff --git a/src/arch/riscv/include/mcall.h b/src/arch/riscv/include/mcall.h
new file mode 100644
index 0000000000..a43b9cf49b
--- /dev/null
+++ b/src/arch/riscv/include/mcall.h
@@ -0,0 +1,70 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 The ChromiumOS Authors
+ *
+ * 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 _MCALL_H
+#define _MCALL_H
+
+#include <arch/encoding.h>
+#include <atomic.h>
+#include <stdint.h>
+
+#define HLS_SIZE 64
+#define MENTRY_FRAME_SIZE HLS_SIZE
+
+typedef struct {
+  unsigned long base;
+  unsigned long size;
+  unsigned long node_id;
+} memory_block_info;
+
+typedef struct {
+  unsigned long dev;
+  unsigned long cmd;
+  unsigned long data;
+  unsigned long sbi_private_data;
+} sbi_device_message;
+
+
+typedef struct {
+  sbi_device_message* device_request_queue_head;
+  unsigned long device_request_queue_size;
+  sbi_device_message* device_response_queue_head;
+  sbi_device_message* device_response_queue_tail;
+
+  int hart_id;
+  int ipi_pending;
+} hls_t;
+
+#define MACHINE_STACK_TOP() ({ \
+  register uintptr_t sp asm ("sp"); \
+  (void*)((sp + RISCV_PGSIZE) & -RISCV_PGSIZE); })
+
+// hart-local storage, at top of stack
+#define HLS() ((hls_t*)(MACHINE_STACK_TOP() - HLS_SIZE))
+#define OTHER_HLS(id) ((hls_t*)((void*)HLS() + RISCV_PGSIZE * ((id) - HLS()->hart_id)))
+
+#define MACHINE_STACK_SIZE RISCV_PGSIZE
+
+uintptr_t mcall_query_memory(uintptr_t id, memory_block_info *p);
+uintptr_t mcall_console_putchar(uint8_t ch);
+uintptr_t mcall_dev_req(sbi_device_message *m);
+uintptr_t mcall_dev_resp(void);
+uintptr_t mcall_set_timer(unsigned long long when);
+uintptr_t mcall_clear_ipi(void);
+uintptr_t mcall_send_ipi(uintptr_t recipient);
+uintptr_t mcall_shutdown(void);
+void hls_init(uint32_t hart_id); // need to call this before launching linux
+
+#endif