start experimenting with processor grids

1 files changed, 45 insertions, 0 deletions

diff --git a/tests/simple_uart/sim.c b/tests/simple_uart/sim.c
new file mode 100644
index 0000000..762b591
--- /dev/null
+++ b/tests/simple_uart/sim.c
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: copyleft-next-0.3.1 */
+/* Copyright 2023 Kim Kuparinen < kimi.h.kuparinen@gmail.com > */
+
+#include <assert.h>
+
+#include <gran/root.h>
+#include <gran/mem/simple_mem.h>
+#include <gran/bus/simple_bus.h>
+#include <gran/uart/simple_uart.h>
+#include <gran/cpu/riscv/simple_riscv64.h>
+
+unsigned char simple_hello[] = {
+  0xb7, 0x17, 0x00, 0x00, 0x13, 0x07, 0x80, 0x04, 0x23, 0x80, 0xe7, 0x00,
+  0x13, 0x07, 0x50, 0x06, 0x23, 0x80, 0xe7, 0x00, 0x13, 0x07, 0xc0, 0x06,
+  0x23, 0x80, 0xe7, 0x00, 0x23, 0x80, 0xe7, 0x00, 0x13, 0x07, 0xf0, 0x06,
+  0x23, 0x80, 0xe7, 0x00, 0x13, 0x07, 0x10, 0x02, 0x23, 0x80, 0xe7, 0x00,
+  0x13, 0x07, 0xa0, 0x00, 0x23, 0x80, 0xe7, 0x00, 0x73, 0x00, 0x10, 0x00,
+  0x67, 0x80, 0x00, 0x00
+};
+unsigned int simple_hello_len = 64;
+
+int main()
+{
+	const size_t size = 4096;
+	struct component *imem = create_simple_mem(size);
+	init_simple_mem(imem, 0, simple_hello_len, simple_hello);
+
+	struct component *dmem = create_simple_mem(size);
+	struct component *uart = create_simple_uart();
+	struct component *bus = create_simple_bus();
+	simple_bus_add(bus, dmem, 0, size);
+	simple_bus_add(bus, uart, size, 1);
+
+	struct component *rv64 = create_simple_riscv64(0, imem, bus);
+
+	struct clock_domain *clk = create_clock_domain(NS(1));
+	clock_domain_add(clk, rv64);
+
+	struct gran_root *root = create_root();
+	root_add_clock(root, clk);
+
+	assert(root_run(root) == OK);
+
+	destroy_root(root);
+}