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-rw-r--r--tests/microbit-test.c160
1 files changed, 160 insertions, 0 deletions
diff --git a/tests/microbit-test.c b/tests/microbit-test.c
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+/*
+ * QTest testcase for Microbit board using the Nordic Semiconductor nRF51 SoC.
+ *
+ * nRF51:
+ * Reference Manual: http://infocenter.nordicsemi.com/pdf/nRF51_RM_v3.0.pdf
+ * Product Spec: http://infocenter.nordicsemi.com/pdf/nRF51822_PS_v3.1.pdf
+ *
+ * Microbit Board: http://microbit.org/
+ *
+ * Copyright 2018 Steffen Görtz <contrib@steffen-goertz.de>
+ *
+ * This code is licensed under the GPL version 2 or later. See
+ * the COPYING file in the top-level directory.
+ */
+
+
+#include "qemu/osdep.h"
+#include "exec/hwaddr.h"
+#include "libqtest.h"
+
+#include "hw/arm/nrf51.h"
+#include "hw/gpio/nrf51_gpio.h"
+
+static void test_nrf51_gpio(void)
+{
+ size_t i;
+ uint32_t actual, expected;
+
+ struct {
+ hwaddr addr;
+ uint32_t expected;
+ } const reset_state[] = {
+ {NRF51_GPIO_REG_OUT, 0x00000000}, {NRF51_GPIO_REG_OUTSET, 0x00000000},
+ {NRF51_GPIO_REG_OUTCLR, 0x00000000}, {NRF51_GPIO_REG_IN, 0x00000000},
+ {NRF51_GPIO_REG_DIR, 0x00000000}, {NRF51_GPIO_REG_DIRSET, 0x00000000},
+ {NRF51_GPIO_REG_DIRCLR, 0x00000000}
+ };
+
+ /* Check reset state */
+ for (i = 0; i < ARRAY_SIZE(reset_state); i++) {
+ expected = reset_state[i].expected;
+ actual = readl(NRF51_GPIO_BASE + reset_state[i].addr);
+ g_assert_cmpuint(actual, ==, expected);
+ }
+
+ for (i = 0; i < NRF51_GPIO_PINS; i++) {
+ expected = 0x00000002;
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START + i * 4);
+ g_assert_cmpuint(actual, ==, expected);
+ }
+
+ /* Check dir bit consistency between dir and cnf */
+ /* Check set via DIRSET */
+ expected = 0x80000001;
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_DIRSET, expected);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_DIR);
+ g_assert_cmpuint(actual, ==, expected);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START) & 0x01;
+ g_assert_cmpuint(actual, ==, 0x01);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_END) & 0x01;
+ g_assert_cmpuint(actual, ==, 0x01);
+
+ /* Check clear via DIRCLR */
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_DIRCLR, 0x80000001);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_DIR);
+ g_assert_cmpuint(actual, ==, 0x00000000);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START) & 0x01;
+ g_assert_cmpuint(actual, ==, 0x00);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_END) & 0x01;
+ g_assert_cmpuint(actual, ==, 0x00);
+
+ /* Check set via DIR */
+ expected = 0x80000001;
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_DIR, expected);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_DIR);
+ g_assert_cmpuint(actual, ==, expected);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START) & 0x01;
+ g_assert_cmpuint(actual, ==, 0x01);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_END) & 0x01;
+ g_assert_cmpuint(actual, ==, 0x01);
+
+ /* Reset DIR */
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_DIR, 0x00000000);
+
+ /* Check Input propagates */
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0x00);
+ qtest_set_irq_in(global_qtest, "/machine/nrf51", "unnamed-gpio-in", 0, 0);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
+ g_assert_cmpuint(actual, ==, 0x00);
+ qtest_set_irq_in(global_qtest, "/machine/nrf51", "unnamed-gpio-in", 0, 1);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
+ g_assert_cmpuint(actual, ==, 0x01);
+ qtest_set_irq_in(global_qtest, "/machine/nrf51", "unnamed-gpio-in", 0, -1);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
+ g_assert_cmpuint(actual, ==, 0x01);
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0x02);
+
+ /* Check pull-up working */
+ qtest_set_irq_in(global_qtest, "/machine/nrf51", "unnamed-gpio-in", 0, 0);
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0b0000);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
+ g_assert_cmpuint(actual, ==, 0x00);
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0b1110);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
+ g_assert_cmpuint(actual, ==, 0x01);
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0x02);
+
+ /* Check pull-down working */
+ qtest_set_irq_in(global_qtest, "/machine/nrf51", "unnamed-gpio-in", 0, 1);
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0b0000);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
+ g_assert_cmpuint(actual, ==, 0x01);
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0b0110);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
+ g_assert_cmpuint(actual, ==, 0x00);
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0x02);
+ qtest_set_irq_in(global_qtest, "/machine/nrf51", "unnamed-gpio-in", 0, -1);
+
+ /* Check Output propagates */
+ irq_intercept_out("/machine/nrf51");
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0b0011);
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_OUTSET, 0x01);
+ g_assert_true(get_irq(0));
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_OUTCLR, 0x01);
+ g_assert_false(get_irq(0));
+
+ /* Check self-stimulation */
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0b01);
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_OUTSET, 0x01);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
+ g_assert_cmpuint(actual, ==, 0x01);
+
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_OUTCLR, 0x01);
+ actual = readl(NRF51_GPIO_BASE + NRF51_GPIO_REG_IN) & 0x01;
+ g_assert_cmpuint(actual, ==, 0x00);
+
+ /*
+ * Check short-circuit - generates an guest_error which must be checked
+ * manually as long as qtest can not scan qemu_log messages
+ */
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_CNF_START, 0b01);
+ writel(NRF51_GPIO_BASE + NRF51_GPIO_REG_OUTSET, 0x01);
+ qtest_set_irq_in(global_qtest, "/machine/nrf51", "unnamed-gpio-in", 0, 0);
+}
+
+int main(int argc, char **argv)
+{
+ int ret;
+
+ g_test_init(&argc, &argv, NULL);
+
+ global_qtest = qtest_initf("-machine microbit");
+
+ qtest_add_func("/microbit/nrf51/gpio", test_nrf51_gpio);
+
+ ret = g_test_run();
+
+ qtest_quit(global_qtest);
+ return ret;
+}