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| * | | exynos5: Use config_distro_bootcmd.hIan Campbell2014-11-17-22/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This replaces the existing CONFIG_BOOTCOMMAND for exynos5250 and 5420. exynos4 platforms seem to have existing complex extra env configuration for booting and so are excluded here. Hence the bootcmd.h is added to exynos5-common.h. I have build tested on all exynos platforms (MAKEALL -s exynos), but only boot tested on arndale. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Guillaume GARDET <guillaume.gardet@free.fr> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
| * | | exynos: Enable config_distro_defaults.hIan Campbell2014-11-17-24/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ...and remove explicit setting of things which this implies. This is done for all exynos platforms (4 & 5) so it is added to exynos-common.h I'm mainly interested in CONFIG_CMD_BOOTZ and CONFIG_SUPPORT_RAW_INITRD I have build tested on all exynos platforms (MAKEALL -s exynos), but only boot tested on arndale. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Guillaume GARDET <guillaume.gardet@free.fr> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
| * | | Config: Exynos5420: Refactor SDRAM Bank and SizeAkshay Saraswat2014-11-17-4/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since, not every board may have all memory channels configured and all available banks of DMC used, we wish to refactor configs for Memory Bank size and numbers as per board memory config. For Example, Peach-Pit has 2GB memory and will be using only 4 banks but Peach-Pi has 3.5GB memory and will be using all 7 available SDRAM banks. Signed-off-by: Akshay Saraswat <akshay.s@samsung.com> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
| * | | Config: Exynos5800: Enable build for Peach-PiAkshay Saraswat2014-11-17-3/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds following things : - New config and defconfig for Peach-Pi board. - Alterations in Kconfig and MAINTAINERS. - Addition of CONFIG_EXYNOS5800. - ADdition of exynos5800-peach-pi in dts list. Signed-off-by: Akshay Saraswat <akshay.s@samsung.com> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
* | | | Merge branch 'master' of http://git.denx.de/u-boot-sunxiTom Rini2014-11-26-1/+65
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| * | | | sun7i: Drop CONFIG_ARMV7_PSCI_NR_CPUSHans de Goede2014-11-25-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is not used anywhere. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
| * | | | sunxi: Add usb keyboard Kconfig optionHans de Goede2014-11-25-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For use together with the hdmi console. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ian.campbell@citrix.com>
| * | | | sunxi: video: Add simplefb supportLuc Verhaegen2014-11-25-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add simplefb support, note this depends on the kernel having support for the clocks property which has recently been added to the simplefb devicetree binding. Signed-off-by: Luc Verhaegen <libv@skynet.be> [hdegoede@redhat.com: Use pre-populated simplefb node under /chosen as disussed on the devicetree list] Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>.
| * | | | fdt_support: Add a fdt_setup_simplefb_node helper functionHans de Goede2014-11-25-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a generic helper to fill and enable simplefb nodes. The first user of this will be the sunxi display code. lcd_dt_simplefb_configure_node is also a good candidate to be converted to use this, but that requires someone to run some tests first, as lcd_dt_simplefb_configure_node does not honor #address-cells and #size-cells, but simply assumes 1 and 1 for both. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Tested-by: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Simon Glass <sjg@chromium.org>
| * | | | sunxi: video: Add cfb console driver for sunxiLuc Verhaegen2014-11-25-0/+41
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a fixed mode hdmi driver for the sunxi platform. The fixed mode is a relatively safe 1024x768, more complete EDID handling is currently not provided. Only HDMI is supported today. This code is enabled when HPD detects an attached monitor. Current config is such that 8MB is shaved off at the top of the RAM. This avoids several memory handling issues, most significant is the fact that on linux on ARM you are not allowed to remap known RAM as IO. A clued in display driver will be able to recycle this reserved RAM in future though. cfbconsole was chosen as it provides the most important functionality: a working u-boot console, allowing for the debugging of certain issues without the need for a UART. Signed-off-by: Luc Verhaegen <libv@skynet.be> [hdegoede@redhat.com: Major cleanups and some small bugfixes] Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Anatolij Gustschin <agust@denx.de> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* | | | Merge git://git.denx.de/u-boot-fdtTom Rini2014-11-26-6/+80
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| * | | fdt: Add a function to decode a named memory regionSimon Glass2014-11-21-0/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Permit decoding of a named memory region from the device tree. This allows easy run-time configuration of the address of on-chip SRAM, SDRAM, etc. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@ti.com>
| * | | fdt: Add ft_system_setup() function for system device tree additionsSimon Glass2014-11-21-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add an additional function for adding information to the device tree before booting. This permits additions which are not board-specific. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Anatolij Gustschin <agust@denx.de> Reviewed-by: Tom Rini <trini@ti.com>
| * | | fdt: Tidy up error handling in image_setup_libfdt()Simon Glass2014-11-21-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The message about needing to reset should be printed no matter what error is printed. Also, an error should always be printed. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Anatolij Gustschin <agust@denx.de> Reviewed-by: Tom Rini <trini@ti.com>
| * | | fdt: Enhance flashmap function to deal with region propertiesSimon Glass2014-11-21-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Flash regions can optionally be compressed or hashed. Add the ability to read this information from the flashmap. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Anatolij Gustschin <agust@denx.de> Reviewed-by: Tom Rini <trini@ti.com>
| * | | fdt: Use the correct return types for fdtdec_decode_region()Simon Glass2014-11-21-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the correct FDT data types for this function. Also add more debugging. Acked-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@ti.com>
| * | | fdt: Export the fdt_find_or_add_subnode() functionSimon Glass2014-11-21-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This function is useful for ensuring that a node exists. Export it so it can be used more widely. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Anatolij Gustschin <agust@denx.de> Reviewed-by: Tom Rini <trini@ti.com>
| * | | fdt: Allow ft_board_setup() to report failureSimon Glass2014-11-21-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This function can fail if the device tree runs out of space. Rather than silently booting with an incomplete device tree, allow the failure to be detected. Unfortunately this involves changing a lot of places in the code. I have not changed behvaiour to return an error where one is not currently returned, to avoid unexpected breakage. Eventually it would be nice to allow boards to register functions to be called to update the device tree. This would avoid all the many functions to do this. However it's not clear yet if this should be done using driver model or with a linker list. This work is left for later. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Anatolij Gustschin <agust@denx.de>
* | | | Merge branch 'master' of git://git.denx.de/u-boot-armTom Rini2014-11-24-6/+0
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| * | | | ARM: Add arch/arm/cpu/armv7/Kconfig with non-secure and virt optionsHans de Goede2014-11-24-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add arch/arm/cpu/armv7/Kconfig with non-secure and virt options, this is a preparation patch for adding an env variable to choose between secure / non-secure boot on non-secure boot capable systems, specifically this prepares for adding CONFIG_ARMV7_BOOT_SEC_DEFAULT as a proper Kconfig option. Signed-off-by: Hans de Goede <hdegoede@redhat.com>
* | | | | Merge branch 'master' of git://www.denx.de/git/u-boot-imxTom Rini2014-11-24-18/+186
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| * | | | | cmd_sata: implement sata stop commandNikita Kiryanov2014-11-24-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement sata stop command. This introduces the __sata_stop() weak function, which mirrors the weak __sata_initialize() function, giving users the option of undoing the custom steps performed in overrides of sata_initialize(). Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il> Cc: Marek Vasut <marex@denx.de> Cc: Tom Rini <trini@ti.com>
| * | | | | sata: implement reset_sata for dwc_ahsataNikita Kiryanov2014-11-24-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add reset_sata() to the sata driver interface and implement it for dwc_ahsata. This function cleans up after sata_init(), and therefore accepts a device number like sata_init() does. A dummy implementation is provided for the rest of the drivers. Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il> Cc: Simon Glass <sjg@chromium.org> Cc: Stefano Babic <sbabic@denx.de>
| * | | | | mx6: mx6sabre common: Enable i.MX thermal DM driverYe.Li2014-11-21-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enable i.MX thermal DM driver to mx6sabre_common.h file. Since the thermal is used in init_sequence_f, so define the CONFIG_SYS_MALLOC_F_LEN to support DM driver using in pre relocation phase. Additional, thermal driver depends on ocotp, make sure to enable CONFIG_MXC_OCOTP when CONFIG_IMX6_THERMAL is selected. Signed-off-by: Ye.Li <B37916@freescale.com> Signed-off-by: Nitin Garg <nitin.garg@freescale.com>
| * | | | | DM: thermal: Add imx thermal DM driverYe.Li2014-11-21-0/+60
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a new thermal uclass for thermal sensor and implement the imx thermal driver basing on this uclass. Signed-off-by: Ye.Li <B37916@freescale.com> Acked-by: Stefano Babic <sbabic@denx.de>
| * | | | | imx: imx6q/dlsabreauto: Add PMIC Pfuze100 supportYe.Li2014-11-20-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add the pfuze100 initialization in power_init_board for imx6q/dl sabreauto board. Signed-off-by: Ye.Li <B37916@freescale.com>
| * | | | | power: pfuze100: Update definitions for buck regulatorsYe.Li2014-11-20-0/+80
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add definitions for buck regulators (SW1A/B/C) registers and voltage values. Signed-off-by: Ye.Li <B37916@freescale.com> Reviewed-by: Przemyslaw Marczak <p.marczak@samsung.com>
| * | | | | imx: mx6sxsabresd: Add board support for USDHC2 and USDHC3Ye.Li2014-11-20-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add full support for USDHC2, USDHC3, USDHC4 on mx6sx sabresd board. The default boot socket is USDHC4, so the MMC environment device and mmcdev variable are set to this device. Signed-off-by: Ye.Li <B37916@freescale.com>
| * | | | | tqma6: (cosmetic) remove CONFIG_FLASH_SECTOR_SIZEMarkus Niebel2014-11-20-14/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is nowhere documented and only used by two other boards. Replace it with TQMA6_SPI_FLASH_SECTOR_SIZE. Signed-off-by: Markus Niebel <Markus.Niebel@tq-group.com>
| * | | | | mx6qsabreauto: Add parallel NOR flash supportFabio Estevam2014-11-20-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mx6sabreauto boards come with 32 MiB of parallel NOR flash. Add support for it: U-Boot 2015.01-rc1-18107-g1543636-dirty (Nov 14 2014 - 11:11:04) CPU: Freescale i.MX6Q rev1.2 at 792 MHz Reset cause: POR Board: MX6Q-Sabreauto revA I2C: ready DRAM: 2 GiB Flash: 32 MiB NAND: 0 MiB Due to pin conflict with I2C3, only define configure I2C3 IOMUX when flash is not used. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
| * | | | | imx: mx6slevk: Change default mmcdev to USDHC2 deviceYe.Li2014-11-20-1/+1
| | |_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | Since USDHC1 and USDHC3 added, the dev index for USDHC2 changed to 1. So modify the default mmcdev in environment variables to dev 1. Signed-off-by: Ye.Li <B37916@freescale.com>
* | | | | Merge git://git.denx.de/u-boot-dmTom Rini2014-11-24-34/+109
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/serial/serial-uclass.c Signed-off-by: Tom Rini <trini@ti.com>
| * | | | | dm: spi: Use device_bind_driver() instead of our own functionSimon Glass2014-11-22-14/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The SPI function does the same thing, so we may as well just use the new generic function. The 'cs' parameter was not actually used, so can be dropped. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com> Acked-by: Heiko Schocher <hs@denx.de>
| * | | | | dm: spi: Correct handling of SPI chip selects in sandboxSimon Glass2014-11-22-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This code was not updated when the chip select handling was adjusted. Fix it to call the correct function. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com> Acked-by: Heiko Schocher <hs@denx.de>
| * | | | | dm: Add a function to bind a device by driver nameSimon Glass2014-11-22-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In some cases we need to manually bind a device to a particular driver. Add a function to do this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com> Acked-by: Heiko Schocher <hs@denx.de>
| * | | | | dm: core: Add functions to find parent and OF dataSimon Glass2014-11-22-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add dev_get_parent() as a convenience to obtain the parent of a device. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@ti.com> Acked-by: Heiko Schocher <hs@denx.de>
| * | | | | dm: core: Allow access to the device's driver_id dataSimon Glass2014-11-22-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the device is created from a device tree node, it matches a compatible string. Allow access to that string and the associated data. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@ti.com> Acked-by: Heiko Schocher <hs@denx.de>
| * | | | | dm: Disable dm_warn() in SPLSimon Glass2014-11-21-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since this function can use up quite a bit of space for its strings, disable it by default in SPL. Use CONFIG_DM_WARN to re-enable it. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@ti.com>
| * | | | | dm: Allow stdio registration to be droppedSimon Glass2014-11-21-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Provide a CONFIG_DM_STDIO option to enable registering a serial device with the stdio library. This is seldom useful in SPL, so disable it by default when building for SPL. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@ti.com>
| * | | | | dm: Allow device removal features to be droppedSimon Glass2014-11-21-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For SPL we don't expect to need to remove a device. Save some code space by dropping this feature. The board config can define CONFIG_DM_DEVICE_REMOVE if this is in fact needed. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@ti.com>
| * | | | | dm: Split the simple malloc() implementation into its own fileSimon Glass2014-11-21-23/+38
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The simple malloc() implementation is used when memory is tight. It provides a simple buffer with an incrementing pointer. At present the implementation is inside dlmalloc. Move it into its own file so that it is easier to find. Rather than using relocation as a signal that the full malloc() is available, add a special GD_FLG_FULL_MALLOC_INIT flag. This signals that the simple malloc() should no longer be used. In some cases, such as SPL, even the code space used by the full malloc() is wasteful. Add a CONFIG_SYS_MALLOC_SIMPLE option to provide only the simple malloc. In this case the full malloc is not available at all. It saves about 1KB of code space and about 0.5KB of data on Thumb 2. Acked-by: Tom Rini <trini@ti.com> Signed-off-by: Simon Glass <sjg@chromium.org>
| * | | | | dm: tegra: Avoid using arch-specific memcpy() in SPLSimon Glass2014-11-21-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The faster functions are not actually available in SPL and the code size likely isn't worth it. Use the normal memcpy() in SPL. Signed-off-by: Simon Glass <sjg@chromium.org>
| * | | | | dm: at91: Convert snapper9260 to use driver modelSimon Glass2014-11-21-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert this at91sam9260-based board to use driver model. This should serve as an example for other similar boards. Serial and GPIO are supported so far. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Andreas Bießmann <andreas.devel@googlemail.com>
| * | | | | dm: at91: Move snapper9260 to generic baordSimon Glass2014-11-21-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This works correctly, so switch it over before the deadline. Signed-off-by: Simon Glass <sjg@chromium.org>
| * | | | | dm: at91: Correct text base for snapper9260Simon Glass2014-11-21-1/+1
| | |_|/ / | |/| | | | | | | | | | | | | | | | | | | | | | | The value should be 0x21f00000. Fix it. Signed-off-by: Simon Glass <sjg@chromium.org>
* | | | | Merge git://git.denx.de/u-boot-x86Tom Rini2014-11-24-257/+363
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: arch/x86/cpu/Makefile Signed-off-by: Tom Rini <trini@ti.com>
| * | | | | x86: ivybridge: Implement SDRAM initSimon Glass2014-11-21-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement SDRAM init using the Memory Reference Code (mrc.bin) provided in the board directory and the SDRAM SPD information in the device tree. This also needs the Intel Management Engine (me.bin) to work. Binary blobs everywhere: so far we have MRC, ME and microcode. SDRAM init works by setting up various parameters and calling the MRC. This in turn does some sort of magic to work out how much memory there is and the timing parameters to use. It also sets up the DRAM controllers. When the MRC returns, we use the information it provides to map out the available memory in U-Boot. U-Boot normally moves itself to the top of RAM. On x86 the RAM is not generally contiguous, and anyway some RAM may be above 4GB which doesn't work in 32-bit mode. So we relocate to the top of the largest block of RAM we can find below 4GB. Memory above 4GB is accessible with special functions (see physmem). It would be possible to build U-Boot in 64-bit mode but this wouldn't necessarily provide any more memory, since the largest block is often below 4GB. Anyway U-Boot doesn't need huge amounts of memory - even a very large ramdisk seldom exceeds 100-200MB. U-Boot has support for booting 64-bit kernels directly so this does not pose a limitation in that area. Also there are probably parts of U-Boot that will not work correctly in 64-bit mode. The MRC is one. There is some work remaining in this area. Since memory init is very slow (over 500ms) it is possible to save the parameters in SPI flash to speed it up next time. Suspend/resume support is not fully implemented, or at least it is not efficient. With this patch, link boots to a prompt. Signed-off-by: Simon Glass <sjg@chromium.org>
| * | | | | x86: chromebook_link: Enable GPIO supportSimon Glass2014-11-21-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enable GPIO support and provide the required GPIO setup information to the driver. Signed-off-by: Simon Glass <sjg@chromium.org>
| * | | | | x86: ivybridge: Perform Intel microcode update on bootSimon Glass2014-11-21-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Microcode updates are stored in the device tree. Work through these and apply any that are needed. Signed-off-by: Simon Glass <sjg@chromium.org>
| * | | | | x86: ivybridge: Enable PCI in early initSimon Glass2014-11-21-2/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enable PCI so we can access devices that need to be set up before relocation. Signed-off-by: Simon Glass <sjg@chromium.org>
generated by cgit v1.1 at 2024-10-31 18:10:50 +0000