The later-stage spl_board_init (as opposed to board_init_f) should set up board-specific details: these differ between the EVB-RK3399 and the RK3399-Q7 (Puma).

This moves spl_board_init back into the individual boards and removes the unneeded functionality from Puma.

As we are touching these files, we also sort the #include directives and drop the inclusion of unneeded files.

Signed-off-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com ---

arch/arm/mach-rockchip/rk3399-board-spl.c | 27 ------------------- board/rockchip/evb_rk3399/evb-rk3399.c | 32 +++++++++++++++++++++-- board/theobroma-systems/puma_rk3399/puma-rk3399.c | 15 ++++++++--- 3 files changed, 41 insertions(+), 33 deletions(-)

diff --git a/arch/arm/mach-rockchip/rk3399-board-spl.c b/arch/arm/mach-rockchip/rk3399-board-spl.c index 1c39d9b..8e38ef1 100644 --- a/arch/arm/mach-rockchip/rk3399-board-spl.c +++ b/arch/arm/mach-rockchip/rk3399-board-spl.c @@ -149,33 +149,6 @@ void board_init_f(ulong dummy) } }

-void spl_board_init(void) -{ - struct udevice *pinctrl; - int ret; - - ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); - if (ret) { - debug("%s: Cannot find pinctrl device\n", __func__); - goto err; - } - - /* Enable debug UART */ - ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG); - if (ret) { - debug("%s: Failed to set up console UART\n", __func__); - goto err; - } - - preloader_console_init(); - return; -err: - printf("spl_board_init: Error %d\n", ret); - - /* No way to report error here */ - hang(); -} - #ifdef CONFIG_SPL_LOAD_FIT int board_fit_config_name_match(const char *name) { diff --git a/board/rockchip/evb_rk3399/evb-rk3399.c b/board/rockchip/evb_rk3399/evb-rk3399.c index d50c59d..506efff 100644 --- a/board/rockchip/evb_rk3399/evb-rk3399.c +++ b/board/rockchip/evb_rk3399/evb-rk3399.c @@ -3,13 +3,14 @@ * * SPDX-License-Identifier: GPL-2.0+ */ + #include <common.h> +#include <asm/arch/periph.h> #include <dm.h> -#include <ram.h> #include <dm/pinctrl.h> #include <dm/uclass-internal.h> -#include <asm/arch/periph.h> #include <power/regulator.h> +#include <spl.h>

DECLARE_GLOBAL_DATA_PTR;

@@ -67,3 +68,30 @@ int board_init(void) out: return 0; } + +void spl_board_init(void) +{ + struct udevice *pinctrl; + int ret; + + ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); + if (ret) { + debug("%s: Cannot find pinctrl device\n", __func__); + goto err; + } + + /* Enable debug UART */ + ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG); + if (ret) { + debug("%s: Failed to set up console UART\n", __func__); + goto err; + } + + preloader_console_init(); + return; +err: + printf("spl_board_init: Error %d\n", ret); + + /* No way to report error here */ + hang(); +} diff --git a/board/theobroma-systems/puma_rk3399/puma-rk3399.c b/board/theobroma-systems/puma_rk3399/puma-rk3399.c index c6f8eed..01b90e3 100644 --- a/board/theobroma-systems/puma_rk3399/puma-rk3399.c +++ b/board/theobroma-systems/puma_rk3399/puma-rk3399.c @@ -3,15 +3,16 @@ * * SPDX-License-Identifier: GPL-2.0+ */ + #include <common.h> +#include <asm/arch/periph.h> +#include <asm/setup.h> #include <dm.h> -#include <misc.h> -#include <ram.h> #include <dm/pinctrl.h> #include <dm/uclass-internal.h> -#include <asm/setup.h> -#include <asm/arch/periph.h> +#include <misc.h> #include <power/regulator.h> +#include <spl.h> #include <u-boot/sha256.h>

DECLARE_GLOBAL_DATA_PTR; @@ -59,6 +60,12 @@ out: return 0; }

+void spl_board_init(void) +{ + preloader_console_init(); + return; +} + static void setup_macaddr(void) { #if CONFIG_IS_ENABLED(CMD_NET)

The Rockchip BROM allows reading where it booted from from SRAM. This adds the necessary definitions (as received from Kever) for the location of this information in the RK3399's SRAM and naming for the constants used.

Signed-off-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com ---

arch/arm/include/asm/arch-rockchip/bootrom.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)

diff --git a/arch/arm/include/asm/arch-rockchip/bootrom.h b/arch/arm/include/asm/arch-rockchip/bootrom.h index 92eb878..169cc5e 100644 --- a/arch/arm/include/asm/arch-rockchip/bootrom.h +++ b/arch/arm/include/asm/arch-rockchip/bootrom.h @@ -24,4 +24,22 @@ void back_to_bootrom(void); */ void _back_to_bootrom_s(void);

+/** + * Boot-device identifiers as used by the BROM + */ +enum { + BROM_BOOTSOURCE_NAND = 1, + BROM_BOOTSOURCE_EMMC = 2, + BROM_BOOTSOURCE_SPINOR = 3, + BROM_BOOTSOURCE_SPINAND = 4, + BROM_BOOTSOURCE_SD = 5, + BROM_BOOTSOURCE_USB = 10, + BROM_LAST_BOOTSOURCE = BROM_BOOTSOURCE_USB +}; + +/** + * Locations of the boot-device identifier in SRAM + */ +#define RK3399_BROM_BOOTSOURCE_ID_ADDR 0xff8c0010 + #endif

In the expectation that the spl-boot-order code will eventually gain use outside of mach-rockchip: let's add documentation on the spl_node_to_boot_device() function, which is likely to become a publicly exported function.

Signed-off-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com ---

arch/arm/mach-rockchip/spl-boot-order.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)

diff --git a/arch/arm/mach-rockchip/spl-boot-order.c b/arch/arm/mach-rockchip/spl-boot-order.c index 4f78c72..0bb9a73 100644 --- a/arch/arm/mach-rockchip/spl-boot-order.c +++ b/arch/arm/mach-rockchip/spl-boot-order.c @@ -10,6 +10,25 @@ #include <spl.h>

#if CONFIG_IS_ENABLED(OF_CONTROL) +/** + * spl_node_to_boot_device() - maps from a DT-node to a SPL boot device + * @node: of_offset of the node + * + * The SPL framework uses BOOT_DEVICE_... constants to identify its boot + * sources. These may take on a device-specific meaning, depending on + * what nodes are enabled in a DTS (e.g. BOOT_DEVICE_MMC1 may refer to + * different controllers/block-devices, depending on which SD/MMC controllers + * are enabled in any given DTS). This function maps from a DT-node back + * onto a BOOT_DEVICE_... constant, considering the currently active devices. + * + * Returns + * -ENOENT, if no device matching the node could be found + * -ENOSYS, if the device matching the node can not be mapped onto a + * SPL boot device (e.g. the third MMC device) + * -1, for unspecified failures + * a positive integer (from the BOOT_DEVICE_... family) on succes. + */ + static int spl_node_to_boot_device(int node) { struct udevice *parent;

It is often desirable to configure the spl-boot-order (i.e. the order that SPL probes devices to find the FIT image containing a full U-Boot) such that it contains 'the same device the SPL stage was booted from' early on. To support this, we introduce the 'same-as-spl' specifier for the spl-boot-order property.

This commit adds: - documentation for the new board_spl_was_booted_from() function that individual SoCs/boards should provide, if they can determine where the SPL was booted from - implements the new board_spl_was_booted_from() stub function - adds support for handling the 'same-as-spl' specifier and calling into the per-SoC/per-board support code.

This also updates the documentation for the 'u-boot,spl-boot-order' property.

Signed-off-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com ---

arch/arm/mach-rockchip/spl-boot-order.c | 29 ++++++++++++++++++++++++++++- doc/device-tree-bindings/chosen.txt | 12 +++++++++++- 2 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-rockchip/spl-boot-order.c b/arch/arm/mach-rockchip/spl-boot-order.c index 0bb9a73..843998d 100644 --- a/arch/arm/mach-rockchip/spl-boot-order.c +++ b/arch/arm/mach-rockchip/spl-boot-order.c @@ -76,6 +76,24 @@ static int spl_node_to_boot_device(int node) return -1; }

+/** + * board_spl_was_booted_from() - retrieves the of-path the SPL was loaded from + * + * To support a 'same-as-spl' specification in the search-order for the next + * stage, we need a SoC- or board-specific way to handshake with what 'came + * before us' (either a BROM or TPL stage) and map the info retrieved onto + * a OF path. + * + * Returns + * NULL, on failure or if the device could not be identified + * a of_path (a string), on success + */ +__weak const char *board_spl_was_booted_from(void) +{ + debug("%s: no support for 'same-as-spl' for this board\n", __func__); + return NULL; +} + void board_boot_order(u32 *spl_boot_list) { const void *blob = gd->fdt_blob; @@ -97,8 +115,17 @@ void board_boot_order(u32 *spl_boot_list) (conf = fdt_stringlist_get(blob, chosen_node, "u-boot,spl-boot-order", elem, NULL)); elem++) { + const char *alias; + + /* Handle the case of 'same device the SPL was loaded from' */ + if (strncmp(conf, "same-as-spl", 11) == 0) { + conf = board_spl_was_booted_from(); + if (!conf) + continue; + } + /* First check if the list element is an alias */ - const char *alias = fdt_get_alias(blob, conf); + alias = fdt_get_alias(blob, conf); if (alias) conf = alias;

diff --git a/doc/device-tree-bindings/chosen.txt b/doc/device-tree-bindings/chosen.txt index 5625d21..c96b8f7 100644 --- a/doc/device-tree-bindings/chosen.txt +++ b/doc/device-tree-bindings/chosen.txt @@ -56,10 +56,20 @@ Each list element of the property should specify a device to be probed in the order they are listed: references (i.e. implicit paths), a full path or an alias is expected for each entry.

+A special specifier "same-as-spl" can be used at any position in the +boot-order to direct U-Boot to insert the device the SPL was booted +from there. Whether this is indeed inserted or silently ignored (if +it is not supported on any given SoC/board or if the boot-device is +not available to continue booting from) is implementation-defined. +Note that if "same-as-spl" expands to an actual node for a given +board, the corresponding node may appear multiple times in the +boot-order (as there currently exists no mechanism to suppress +duplicates from the list). + Example ------- / { chosen { - u-boot,spl-boot-order = &sdmmc, "/sdhci@fe330000"; + u-boot,spl-boot-order = "same-as-spl", &sdmmc, "/sdhci@fe330000"; }; };

In the general case, we want to continue booting the full U-Boot (contained in a discoverable FIT image) from the same device the SPL stage was loaded from. This prepends the 'same-as-spl' specifier to our configurable boot-order to make this the default behaviour.

Signed-off-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com ---

arch/arm/dts/rk3399-puma.dtsi | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/dts/rk3399-puma.dtsi b/arch/arm/dts/rk3399-puma.dtsi index dd1baea..edb9424 100644 --- a/arch/arm/dts/rk3399-puma.dtsi +++ b/arch/arm/dts/rk3399-puma.dtsi @@ -20,7 +20,8 @@

chosen { stdout-path = "serial0:115200n8"; - u-boot,spl-boot-order = &spiflash, &sdhci, &sdmmc; + u-boot,spl-boot-order = \ + "same-as-spl", &spiflash, &sdhci, &sdmmc; };

aliases {

The original initialisation code for board_init() was largely lifted from the code on the EVB. However, the RK3399-Q7 can do with a much more concise init sequence.

This cleans up the board_init() by updating it to the essentials for the RK3399-Q7 and getting rid of the accumulated cruft.

Signed-off-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com ---

board/theobroma-systems/puma_rk3399/puma-rk3399.c | 36 +++-------------------- 1 file changed, 4 insertions(+), 32 deletions(-)

diff --git a/board/theobroma-systems/puma_rk3399/puma-rk3399.c b/board/theobroma-systems/puma_rk3399/puma-rk3399.c index 01b90e3..cc572b5 100644 --- a/board/theobroma-systems/puma_rk3399/puma-rk3399.c +++ b/board/theobroma-systems/puma_rk3399/puma-rk3399.c @@ -19,44 +19,16 @@ DECLARE_GLOBAL_DATA_PTR;

int board_init(void) { - struct udevice *pinctrl, *regulator; int ret;

/* - * The PWM does not have decicated interrupt number in dts and can - * not get periph_id by pinctrl framework, so let's init them here. - * The PWM2 and PWM3 are for pwm regulators. + * We need to call into regulators_enable_boot_on() again, as the call + * during SPL may have not included all regulators. */ - ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); - if (ret) { - debug("%s: Cannot find pinctrl device\n", __func__); - goto out; - } - - ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM2); - if (ret) { - debug("%s PWM2 pinctrl init fail!\n", __func__); - goto out; - } - - /* rk3399 need to init vdd_center to get the correct output voltage */ - ret = regulator_get_by_platname("vdd_center", &regulator); + ret = regulators_enable_boot_on(false); if (ret) - debug("%s: Cannot get vdd_center regulator\n", __func__); - - ret = regulator_get_by_platname("vcc5v0_host", &regulator); - if (ret) { - debug("%s vcc5v0_host init fail! ret %d\n", __func__, ret); - goto out; - } - - ret = regulator_set_enable(regulator, true); - if (ret) { - debug("%s vcc5v0-host-en set fail!\n", __func__); - goto out; - } + debug("%s: Cannot enable boot on regulator\n", __func__);

-out: return 0; }

The (Qseven) BIOS_DISABLE signal on the RK3399-Q7 (Puma) keeps the eMMC and SPI in reset initially and we need to write a GPIO to turn them on before continuing the boot-up.

This adds the DTS entries for the additional regulator and makes pinctrl and gpio3 available during SPL. It also adds a hook to the spl_board_init() to ensure that the regulator gets probed and enabled.

Signed-off-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com ---

arch/arm/dts/rk3399-puma.dtsi | 23 +++++++++++++++++++++++ board/theobroma-systems/puma_rk3399/puma-rk3399.c | 10 ++++++++++ 2 files changed, 33 insertions(+)

diff --git a/arch/arm/dts/rk3399-puma.dtsi b/arch/arm/dts/rk3399-puma.dtsi index edb9424..85e00ec 100644 --- a/arch/arm/dts/rk3399-puma.dtsi +++ b/arch/arm/dts/rk3399-puma.dtsi @@ -90,6 +90,24 @@ }; };

+ /* + * The Qseven BIOS_DISABLE signal on the RK3399-Q7 keeps the on-module + * eMMC and SPI flash powered-down initially (in fact it keeps the + * reset signal asserted). Even though it is an enable signal, we + * model this as a regulator. + */ + bios_enable: bios_enable { + compatible = "regulator-fixed"; + u-boot,dm-pre-reloc; + regulator-name = "bios_enable"; + enable-active-low; + gpio = <&gpio3 29 GPIO_ACTIVE_HIGH>; + regulator-always-on; + regulator-boot-on; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + vccadc_ref: vccadc-ref { compatible = "regulator-fixed"; regulator-name = "vcc1v8_sys"; @@ -523,10 +541,15 @@ status = "okay"; };

+&gpio3 { + u-boot,dm-pre-reloc; +}; + &pinctrl { /* Pins that are not explicitely used by any devices */ pinctrl-names = "default"; pinctrl-0 = <&puma_pin_hog>; + hog { puma_pin_hog: puma_pin_hog { rockchip,pins = diff --git a/board/theobroma-systems/puma_rk3399/puma-rk3399.c b/board/theobroma-systems/puma_rk3399/puma-rk3399.c index cc572b5..b49fa66 100644 --- a/board/theobroma-systems/puma_rk3399/puma-rk3399.c +++ b/board/theobroma-systems/puma_rk3399/puma-rk3399.c @@ -34,6 +34,16 @@ int board_init(void)

void spl_board_init(void) { + int ret; + + /* + * Turning the eMMC and SPI back on (if disabled via the Qseven + * BIOS_ENABLE) signal is done through a always-on regulator). + */ + ret = regulators_enable_boot_on(false); + if (ret) + debug("%s: Cannot enable boot on regulator\n", __func__); + preloader_console_init(); return; }

The Makefile already tests for SPL_DM_REGULATOR_FIXED, but Kconfig does not provide it. This adds SPL_DM_REGULATOR_FIXED to Kconfig.

Signed-off-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com ---

drivers/power/regulator/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+)

diff --git a/drivers/power/regulator/Kconfig b/drivers/power/regulator/Kconfig index c82a936..a11408f 100644 --- a/drivers/power/regulator/Kconfig +++ b/drivers/power/regulator/Kconfig @@ -77,6 +77,13 @@ config DM_REGULATOR_FIXED features for fixed value regulators. The driver implements get/set api for enable and get only for voltage value.

+config SPL_DM_REGULATOR_FIXED + bool "Enable Driver Model for REGULATOR Fixed value in SPL" + depends on DM_REGULATOR_FIXED + ---help--- + This config enables implementation of driver-model regulator uclass + features for fixed value regulators in SPL. + config DM_REGULATOR_GPIO bool "Enable Driver Model for GPIO REGULATOR" depends on DM_REGULATOR

The RK3399-Q7 requires DM regulator support in SPL, so we can use the regulator framework to reenable the eMMC and SPI, if these had been turned of by the BIOS_DISABLE signal.

Signed-off-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com ---

configs/puma-rk3399_defconfig | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/configs/puma-rk3399_defconfig b/configs/puma-rk3399_defconfig index 1badf80..861b8c6 100644 --- a/configs/puma-rk3399_defconfig +++ b/configs/puma-rk3399_defconfig @@ -1,5 +1,6 @@ CONFIG_ARM=y CONFIG_ARCH_ROCKCHIP=y +CONFIG_SPL_GPIO_SUPPORT=y CONFIG_SPL_LIBCOMMON_SUPPORT=y CONFIG_SPL_LIBGENERIC_SUPPORT=y CONFIG_SYS_MALLOC_F_LEN=0x4000 @@ -20,6 +21,8 @@ CONFIG_SPL_BOARD_INIT=y CONFIG_SPL_STACK_R=y CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN=0x4000 CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0x200 +CONFIG_SPL_I2C_SUPPORT=y +CONFIG_SPL_POWER_SUPPORT=y CONFIG_CMD_BOOTZ=y # CONFIG_CMD_IMLS is not set CONFIG_CMD_GPT=y @@ -62,8 +65,10 @@ CONFIG_SPL_PINCTRL=y CONFIG_PINCTRL_ROCKCHIP_RK3399=y CONFIG_DM_PMIC=y CONFIG_PMIC_RK8XX=y -CONFIG_REGULATOR_PWM=y +CONFIG_SPL_DM_REGULATOR=y CONFIG_DM_REGULATOR_FIXED=y +CONFIG_SPL_DM_REGULATOR_FIXED=y +CONFIG_DM_REGULATOR_GPIO=y CONFIG_REGULATOR_RK8XX=y CONFIG_PWM_ROCKCHIP=y CONFIG_RAM=y