diff options
| -rw-r--r-- | tests/Makefile.include | 2 | ||||
| -rw-r--r-- | tests/m25p80-test.c | 252 |
2 files changed, 254 insertions, 0 deletions
diff --git a/tests/Makefile.include b/tests/Makefile.include index a77777c..33ea83e 100644 --- a/tests/Makefile.include +++ b/tests/Makefile.include @@ -295,6 +295,7 @@ check-qtest-sparc64-y = tests/endianness-test$(EXESUF) check-qtest-arm-y = tests/tmp105-test$(EXESUF) check-qtest-arm-y += tests/ds1338-test$(EXESUF) +check-qtest-arm-y += tests/m25p80-test$(EXESUF) gcov-files-arm-y += hw/misc/tmp105.c check-qtest-arm-y += tests/virtio-blk-test$(EXESUF) gcov-files-arm-y += arm-softmmu/hw/block/virtio-blk.c @@ -626,6 +627,7 @@ tests/bios-tables-test$(EXESUF): tests/bios-tables-test.o \ tests/pxe-test$(EXESUF): tests/pxe-test.o tests/boot-sector.o $(libqos-obj-y) tests/tmp105-test$(EXESUF): tests/tmp105-test.o $(libqos-omap-obj-y) tests/ds1338-test$(EXESUF): tests/ds1338-test.o $(libqos-imx-obj-y) +tests/m25p80-test$(EXESUF): tests/m25p80-test.o tests/i440fx-test$(EXESUF): tests/i440fx-test.o $(libqos-pc-obj-y) tests/q35-test$(EXESUF): tests/q35-test.o $(libqos-pc-obj-y) tests/fw_cfg-test$(EXESUF): tests/fw_cfg-test.o $(libqos-pc-obj-y) diff --git a/tests/m25p80-test.c b/tests/m25p80-test.c new file mode 100644 index 0000000..cb7ec81 --- /dev/null +++ b/tests/m25p80-test.c @@ -0,0 +1,252 @@ +/* + * QTest testcase for the M25P80 Flash (Using the Aspeed SPI + * Controller) + * + * Copyright (C) 2016 IBM Corp. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "qemu/osdep.h" +#include "qemu/bswap.h" +#include "libqtest.h" + +/* + * ASPEED SPI Controller registers + */ +#define R_CONF 0x00 +#define CONF_ENABLE_W0 (1 << 16) +#define R_CE_CTRL 0x04 +#define CRTL_EXTENDED0 0 /* 32 bit addressing for SPI */ +#define R_CTRL0 0x10 +#define CTRL_CE_STOP_ACTIVE (1 << 2) +#define CTRL_USERMODE 0x3 + +#define ASPEED_FMC_BASE 0x1E620000 +#define ASPEED_FLASH_BASE 0x20000000 + +/* + * Flash commands + */ +enum { + JEDEC_READ = 0x9f, + BULK_ERASE = 0xc7, + READ = 0x03, + PP = 0x02, + WREN = 0x6, + EN_4BYTE_ADDR = 0xB7, + ERASE_SECTOR = 0xd8, +}; + +#define FLASH_JEDEC 0x20ba19 /* n25q256a */ +#define FLASH_SIZE (32 * 1024 * 1024) + +#define PAGE_SIZE 256 + +/* + * Use an explicit bswap for the values read/wrote to the flash region + * as they are BE and the Aspeed CPU is LE. + */ +static inline uint32_t make_be32(uint32_t data) +{ + return bswap32(data); +} + +static void spi_conf(uint32_t value) +{ + uint32_t conf = readl(ASPEED_FMC_BASE + R_CONF); + + conf |= value; + writel(ASPEED_FMC_BASE + R_CONF, conf); +} + +static void spi_ctrl_start_user(void) +{ + uint32_t ctrl = readl(ASPEED_FMC_BASE + R_CTRL0); + + ctrl |= CTRL_USERMODE | CTRL_CE_STOP_ACTIVE; + writel(ASPEED_FMC_BASE + R_CTRL0, ctrl); + + ctrl &= ~CTRL_CE_STOP_ACTIVE; + writel(ASPEED_FMC_BASE + R_CTRL0, ctrl); +} + +static void spi_ctrl_stop_user(void) +{ + uint32_t ctrl = readl(ASPEED_FMC_BASE + R_CTRL0); + + ctrl |= CTRL_USERMODE | CTRL_CE_STOP_ACTIVE; + writel(ASPEED_FMC_BASE + R_CTRL0, ctrl); +} + +static void test_read_jedec(void) +{ + uint32_t jedec = 0x0; + + spi_conf(CONF_ENABLE_W0); + + spi_ctrl_start_user(); + writeb(ASPEED_FLASH_BASE, JEDEC_READ); + jedec |= readb(ASPEED_FLASH_BASE) << 16; + jedec |= readb(ASPEED_FLASH_BASE) << 8; + jedec |= readb(ASPEED_FLASH_BASE); + spi_ctrl_stop_user(); + + g_assert_cmphex(jedec, ==, FLASH_JEDEC); +} + +static void read_page(uint32_t addr, uint32_t *page) +{ + int i; + + spi_ctrl_start_user(); + + writeb(ASPEED_FLASH_BASE, EN_4BYTE_ADDR); + writeb(ASPEED_FLASH_BASE, READ); + writel(ASPEED_FLASH_BASE, make_be32(addr)); + + /* Continuous read are supported */ + for (i = 0; i < PAGE_SIZE / 4; i++) { + page[i] = make_be32(readl(ASPEED_FLASH_BASE)); + } + spi_ctrl_stop_user(); +} + +static void test_erase_sector(void) +{ + uint32_t some_page_addr = 0x600 * PAGE_SIZE; + uint32_t page[PAGE_SIZE / 4]; + int i; + + spi_conf(CONF_ENABLE_W0); + + spi_ctrl_start_user(); + writeb(ASPEED_FLASH_BASE, WREN); + writeb(ASPEED_FLASH_BASE, EN_4BYTE_ADDR); + writeb(ASPEED_FLASH_BASE, ERASE_SECTOR); + writel(ASPEED_FLASH_BASE, make_be32(some_page_addr)); + spi_ctrl_stop_user(); + + /* Previous page should be full of zeroes as backend is not + * initialized */ + read_page(some_page_addr - PAGE_SIZE, page); + for (i = 0; i < PAGE_SIZE / 4; i++) { + g_assert_cmphex(page[i], ==, 0x0); + } + + /* But this one was erased */ + read_page(some_page_addr, page); + for (i = 0; i < PAGE_SIZE / 4; i++) { + g_assert_cmphex(page[i], ==, 0xffffffff); + } +} + +static void test_erase_all(void) +{ + uint32_t some_page_addr = 0x15000 * PAGE_SIZE; + uint32_t page[PAGE_SIZE / 4]; + int i; + + spi_conf(CONF_ENABLE_W0); + + /* Check some random page. Should be full of zeroes as backend is + * not initialized */ + read_page(some_page_addr, page); + for (i = 0; i < PAGE_SIZE / 4; i++) { + g_assert_cmphex(page[i], ==, 0x0); + } + + spi_ctrl_start_user(); + writeb(ASPEED_FLASH_BASE, WREN); + writeb(ASPEED_FLASH_BASE, BULK_ERASE); + spi_ctrl_stop_user(); + + /* Recheck that some random page */ + read_page(some_page_addr, page); + for (i = 0; i < PAGE_SIZE / 4; i++) { + g_assert_cmphex(page[i], ==, 0xffffffff); + } +} + +static void test_write_page(void) +{ + uint32_t my_page_addr = 0x14000 * PAGE_SIZE; /* beyond 16MB */ + uint32_t some_page_addr = 0x15000 * PAGE_SIZE; + uint32_t page[PAGE_SIZE / 4]; + int i; + + spi_conf(CONF_ENABLE_W0); + + spi_ctrl_start_user(); + writeb(ASPEED_FLASH_BASE, EN_4BYTE_ADDR); + writeb(ASPEED_FLASH_BASE, PP); + writel(ASPEED_FLASH_BASE, make_be32(my_page_addr)); + + /* Fill the page with its own addresses */ + for (i = 0; i < PAGE_SIZE / 4; i++) { + writel(ASPEED_FLASH_BASE, make_be32(my_page_addr + i * 4)); + } + spi_ctrl_stop_user(); + + /* Check what was written */ + read_page(my_page_addr, page); + for (i = 0; i < PAGE_SIZE / 4; i++) { + g_assert_cmphex(page[i], ==, my_page_addr + i * 4); + } + + /* Check some other page. It should be full of 0xff */ + read_page(some_page_addr, page); + for (i = 0; i < PAGE_SIZE / 4; i++) { + g_assert_cmphex(page[i], ==, 0xffffffff); + } +} + +static char tmp_path[] = "/tmp/qtest.m25p80.XXXXXX"; + +int main(int argc, char **argv) +{ + int ret; + int fd; + char *args; + + g_test_init(&argc, &argv, NULL); + + fd = mkstemp(tmp_path); + g_assert(fd >= 0); + ret = ftruncate(fd, FLASH_SIZE); + g_assert(ret == 0); + close(fd); + + args = g_strdup_printf("-m 256 -machine palmetto-bmc " + "-drive file=%s,format=raw,if=mtd", + tmp_path); + qtest_start(args); + + qtest_add_func("/m25p80/read_jedec", test_read_jedec); + qtest_add_func("/m25p80/erase_sector", test_erase_sector); + qtest_add_func("/m25p80/erase_all", test_erase_all); + qtest_add_func("/m25p80/write_page", test_write_page); + + ret = g_test_run(); + + qtest_quit(global_qtest); + unlink(tmp_path); + g_free(args); + return ret; +} |