[PATCH qemu 16/38] aspeed/smc: add tests for Command mode

[Andrew Jeffery]

On Fri, 2016-11-18 at 15:21 +0100, Cédric Le Goater wrote:
> 0005 tests add a read_page_mem test
> 
> Signed-off-by: Cédric Le Goater <clg at kaod.org>

Reviewed-by: Andrew Jeffery <andrew at aj.id.au>

> ---
>  tests/m25p80-test.c | 86 +++++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 86 insertions(+)
> 
> diff --git a/tests/m25p80-test.c b/tests/m25p80-test.c
> index cb7ec81f1a6d..3d449bd194a9 100644
> --- a/tests/m25p80-test.c
> +++ b/tests/m25p80-test.c
> @@ -36,6 +36,9 @@
>  #define   CRTL_EXTENDED0       0  /* 32 bit addressing for SPI */
>  #define R_CTRL0             0x10
>  #define   CTRL_CE_STOP_ACTIVE  (1 << 2)
> +#define   CTRL_READMODE        0x0
> +#define   CTRL_FREADMODE       0x1
> +#define   CTRL_WRITEMODE       0x2
>  #define   CTRL_USERMODE        0x3
>  
>  #define ASPEED_FMC_BASE    0x1E620000
> @@ -76,6 +79,22 @@ static void spi_conf(uint32_t value)
>      writel(ASPEED_FMC_BASE + R_CONF, conf);
>  }
>  
> +static void spi_ce_ctrl(uint32_t value)
> +{
> +    uint32_t conf = readl(ASPEED_FMC_BASE + R_CE_CTRL);
> +
> +    conf |= value;
> +    writel(ASPEED_FMC_BASE + R_CE_CTRL, conf);
> +}
> +
> +static void spi_ctrl_setmode(uint8_t mode, uint8_t cmd)
> +{
> +    uint32_t ctrl = readl(ASPEED_FMC_BASE + R_CTRL0);
> +    ctrl &= ~(CTRL_USERMODE | 0xff << 16);
> +    ctrl |= mode | (cmd << 16);
> +    writel(ASPEED_FMC_BASE + R_CTRL0, ctrl);
> +}
> +
>  static void spi_ctrl_start_user(void)
>  {
>      uint32_t ctrl = readl(ASPEED_FMC_BASE + R_CTRL0);
> @@ -128,6 +147,18 @@ static void read_page(uint32_t addr, uint32_t *page)
>      spi_ctrl_stop_user();
>  }
>  
> +static void read_page_mem(uint32_t addr, uint32_t *page)
> +{
> +    int i;
> +
> +    /* move out USER mode to use direct reads from the AHB bus */
> +    spi_ctrl_setmode(CTRL_READMODE, READ);
> +
> +    for (i = 0; i < PAGE_SIZE / 4; i++) {
> +        page[i] = make_be32(readl(ASPEED_FLASH_BASE + addr + i * 4));
> +    }
> +}
> +
>  static void test_erase_sector(void)
>  {
>      uint32_t some_page_addr = 0x600 * PAGE_SIZE;
> @@ -195,6 +226,7 @@ static void test_write_page(void)
>  
>      spi_ctrl_start_user();
>      writeb(ASPEED_FLASH_BASE, EN_4BYTE_ADDR);
> +    writeb(ASPEED_FLASH_BASE, WREN);
>      writeb(ASPEED_FLASH_BASE, PP);
>      writel(ASPEED_FLASH_BASE, make_be32(my_page_addr));
>  
> @@ -217,6 +249,58 @@ static void test_write_page(void)
>      }
>  }
>  
> +static void test_read_page_mem(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;
> +
> +    /* Enable 4BYTE mode for flash. This is should be strapped by HW
> +     * for CE0 anyhow.
> +     */
> +    spi_ce_ctrl(1 << CRTL_EXTENDED0);
> +
> +    /* Check what was written */
> +    read_page_mem(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_mem(some_page_addr, page);
> +    for (i = 0; i < PAGE_SIZE / 4; i++) {
> +        g_assert_cmphex(page[i], ==, 0xffffffff);
> +    }
> +}
> +
> +static void test_write_page_mem(void)
> +{
> +    uint32_t my_page_addr = 0x15000 * PAGE_SIZE;
> +    uint32_t page[PAGE_SIZE / 4];
> +    int i;
> +
> +    /* Enable 4BYTE mode for flash. This is should be strapped by HW
> +     * for CE0 anyhow.
> +     */
> +    spi_ce_ctrl(1 << CRTL_EXTENDED0);
> +
> +    /* move out USER mode to use direct writes to the AHB bus */
> +    spi_ctrl_setmode(CTRL_WRITEMODE, PP);
> +
> +    for (i = 0; i < PAGE_SIZE / 4; i++) {
> +        writel(ASPEED_FLASH_BASE + my_page_addr + i * 4,
> +               make_be32(my_page_addr + i * 4));
> +    }
> +
> +    /* Check what was written */
> +    read_page_mem(my_page_addr, page);
> +    for (i = 0; i < PAGE_SIZE / 4; i++) {
> +        g_assert_cmphex(page[i], ==, my_page_addr + i * 4);
> +    }
> +}
> +
> +
>  static char tmp_path[] = "/tmp/qtest.m25p80.XXXXXX";
>  
>  int main(int argc, char **argv)
> @@ -242,6 +326,8 @@ int main(int argc, char **argv)
>      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);
> +    qtest_add_func("/m25p80/read_page_mem", test_read_page_mem);
> +    qtest_add_func("/m25p80/write_page_mem", test_write_page_mem);
>  
>      ret = g_test_run();
>  
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