1 files changed, 85 insertions, 0 deletions
diff --git a/test/windows_equally_evictable.c b/test/windows_equally_evictable.c
new file mode 100644
index 0000000..e54343b
--- /dev/null
+++ b/test/windows_equally_evictable.c
@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright (C) 2018 IBM Corp.
+
+#include <assert.h>
+#include <string.h>
+
+#include "config.h"
+#include "transport_mbox.h"
+#include "windows.h"
+
+#include "test/mbox.h"
+#include "test/system.h"
+
+struct test_context
+{
+    uint8_t seq;
+    struct mbox_context *ctx;
+};
+
+// Configure the system and the paritions such that we eventually request a
+// window that covers the last section of flash, but the remaining flash is
+// smaller than the window size
+#define BLOCK_SIZE	4096
+#define ERASE_SIZE	BLOCK_SIZE
+#define N_WINDOWS	3
+#define WINDOW_SIZE	BLOCK_SIZE
+#define MEM_SIZE	(N_WINDOWS * WINDOW_SIZE)
+#define PNOR_SIZE	((N_WINDOWS + 1) * WINDOW_SIZE)
+
+static const uint8_t get_info[] = {0x02, 0x00, 0x02, 0x00, 0x00, 0x00,
+                                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                                   0x00, 0x00, 0x00, 0x00};
+
+#define MBOX_CREATE_READ_WINDOW 4
+
+static int mbox_create_read_window(struct test_context *tctx, size_t offset,
+                                   size_t len)
+{
+    union mbox_regs regs;
+
+    memset(&regs, 0, sizeof(regs));
+    regs.msg.command = MBOX_CREATE_READ_WINDOW;
+    regs.msg.seq = ++tctx->seq;
+    put_u16(&regs.msg.args[0], offset);
+    put_u16(&regs.msg.args[2], len);
+
+    return mbox_command_dispatch(tctx->ctx, regs.raw, sizeof(regs.raw));
+}
+
+int main()
+{
+    struct test_context _tctx = {0}, *tctx = &_tctx;
+    size_t len;
+    size_t pos;
+    int rc;
+
+    system_set_reserved_size(MEM_SIZE);
+    system_set_mtd_sizes(PNOR_SIZE, ERASE_SIZE);
+
+    tctx->ctx = mbox_create_test_context(N_WINDOWS, WINDOW_SIZE);
+
+    rc = mbox_command_dispatch(tctx->ctx, get_info, sizeof(get_info));
+    assert(rc == 1);
+
+    pos = 0;
+    while (pos < ((PNOR_SIZE - BLOCK_SIZE) / BLOCK_SIZE))
+    {
+        struct mbox_msg _msg, *msg = &_msg;
+
+        rc = mbox_create_read_window(tctx, pos, (WINDOW_SIZE / BLOCK_SIZE));
+        assert(rc == 1);
+
+        mbox_rspcpy(tctx->ctx, msg);
+
+        len = get_u16(&msg->args[2]);
+        pos = get_u16(&msg->args[4]) + len;
+    }
+
+    windows_reset_all(tctx->ctx);
+
+    rc = mbox_create_read_window(tctx, pos, (WINDOW_SIZE / BLOCK_SIZE));
+    assert(rc == 1);
+
+    return 0;
+}