From patchwork Wed Mar 4 14:41:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Walter Lozano X-Patchwork-Id: 243208 List-Id: U-Boot discussion From: walter.lozano at collabora.com (Walter Lozano) Date: Wed, 4 Mar 2020 11:41:24 -0300 Subject: [PATCH 3/4] mx6cuboxi: customize board_boot_order to access eMMC In-Reply-To: <20200304144125.8564-1-walter.lozano@collabora.com> References: <20200304144125.8564-1-walter.lozano@collabora.com> Message-ID: <20200304144125.8564-4-walter.lozano@collabora.com> In SPL legacy code only one MMC device is created, based on BOOT_CFG register, which can be either SD or eMMC. In this context board_boot_order return always MMC1 when configure to boot from SD/eMMC. After switching to DM both SD and eMMC devices are created based on the information available on DT, but as board_boot_order only returns MMC1 is not possible to boot from eMMC. This patch customizes board_boot_order taking into account BOOT_CFG register to point to correct MMC1 / MMC2 device. Signed-off-by: Walter Lozano --- board/solidrun/mx6cuboxi/mx6cuboxi.c | 49 ++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/board/solidrun/mx6cuboxi/mx6cuboxi.c b/board/solidrun/mx6cuboxi/mx6cuboxi.c index 71c77ad2a2..3ce122e8b9 100644 --- a/board/solidrun/mx6cuboxi/mx6cuboxi.c +++ b/board/solidrun/mx6cuboxi/mx6cuboxi.c @@ -649,6 +649,55 @@ int board_fit_config_name_match(const char *name) return strcmp(name, tmp_name); } +void board_boot_order(u32 *spl_boot_list) +{ + struct src *psrc = (struct src *)SRC_BASE_ADDR; + unsigned int reg = readl(&psrc->sbmr1) >> 11; + u32 boot_mode = imx6_src_get_boot_mode() & IMX6_BMODE_MASK; + unsigned int bmode = readl(&src_base->sbmr2); + + /* If bmode is serial or USB phy is active, return serial */ + if (((bmode >> 24) & 0x03) == 0x01 || is_usbotg_phy_active()) { + spl_boot_list[0] = BOOT_DEVICE_BOARD; + return; + } + + switch (boot_mode >> IMX6_BMODE_SHIFT) { + case IMX6_BMODE_NAND_MIN ... IMX6_BMODE_NAND_MAX: + spl_boot_list[0] = BOOT_DEVICE_NAND; + break; + case IMX6_BMODE_SD: + case IMX6_BMODE_ESD: + case IMX6_BMODE_MMC: + case IMX6_BMODE_EMMC: + /* + * Upon reading BOOT_CFG register the following map is done: + * Bit 11 and 12 of BOOT_CFG register can determine the current + * mmc port + * 0x1 SD2 + * 0x2 SD3 + */ + + reg &= 0x3; /* Only care about bottom 2 bits */ + switch (reg) { + case 1: + spl_boot_list[0] = BOOT_DEVICE_MMC1; + break; + case 2: + spl_boot_list[0] = BOOT_DEVICE_MMC2; + break; + } + break; + default: + /* By default use USB downloader */ + spl_boot_list[0] = BOOT_DEVICE_BOARD; + break; + } + + /* As a last resort, use serial downloader */ + spl_boot_list[1] = BOOT_DEVICE_BOARD; +} + #ifdef CONFIG_SPL_BUILD #include static const struct mx6dq_iomux_ddr_regs mx6q_ddr_ioregs = {