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path: root/arch/arm/cpu/arm926ejs/mx28
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2012-09-01mxs: reorganize source directory for easy sharing of code in i.MXS SoCsOtavio Salvador
Most code can be shared between i.MX23 and i.MX28 as both are from i.MXS family; this source directory structure makes easy to share code among them. Signed-off-by: Otavio Salvador <otavio@ossystems.com.br> Acked-by: Stefano Babic <sbabic@denx.de>
2012-09-01MX28: use a clear name for DDR2 initializationOtavio Salvador
The mx28 prefix has been added to the initialization data and function so it is clear by which SoC it is used as i.MX233 will have a specific one. While on that, we also change it to static. Signed-off-by: Otavio Salvador <otavio@ossystems.com.br> Acked-by: Marek Vasut <marex@denx.de>
2012-09-01MX28: extend print_cpuinfo() to use chip informationOtavio Salvador
The information now is gathered from HW_DIGCTL_CHIPID register and includes the chip modem and revision on the output. Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
2012-07-07ARM: mx28: Remove CONFIG_ARCH_CPU_INITFabio Estevam
No need to define CONFIG_ARCH_CPU_INIT. All mx28 based boards should use arch_cpu_init(). Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Marek Vasut <marex@denx.de>
2012-07-07i.MX28: Add function to adjust memory parametersMarek Vasut
This function can be overridden at run-time and allows implementors of new boards based on the i.MX28 chip to fine-tune the memory params. It is possible to write into the dram_vals array because when the SPL runs, it is located SRAM. Therefore the location is writable. There is no possibility of these data to be read-only. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Fabio Estevam <festevam@gmail.com>
2012-05-15i.MX28: Avoid redefining serial_put[cs]()Marek Vasut
Do not define serial_putc() and serial_puts() calls if CONFIG_SPL_SERIAL_SUPPORT is set. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Fabio Estevam <fabio.estevam@freescale.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de> Acked-by: Stefano Babic <sbabic@denx.de>
2012-05-15i.MX28: Add battery boot components to SPLMarek Vasut
Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Detlev Zundel <dzu@denx.de> Cc: Fabio Estevam <fabio.estevam@freescale.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de>
2012-05-15i.MX28: Reorder battery status functions in SPLMarek Vasut
Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Detlev Zundel <dzu@denx.de> Cc: Fabio Estevam <fabio.estevam@freescale.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de>
2012-05-15i.MX28: Add LRADC init to i.MX28 SPLMarek Vasut
This code is part of battery boot support for i.MX28. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Detlev Zundel <dzu@denx.de> Cc: Fabio Estevam <fabio.estevam@freescale.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de>
2012-05-15i.MX28: Shut down the LCD controller before resetMarek Vasut
If the LCD controller is on before the CPU goes into reset, the traffic on LCDIF data pins interferes with the BootROM's boot mode sampling. So shut the controller down. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Fabio Estevam <festevam@gmail.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de>
2012-05-15i.MX28: Implement boot pads sampling and reportingMarek Vasut
This patch implements code that samples i.MX28 boot pads and reports boot mode accordingly. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Fabio Estevam <fabio.estevam@freescale.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de>
2012-05-15i.MX28: Improve passing of data from SPL to U-BootMarek Vasut
Pass memory size from SPL via structure located in SRAM instead of SCRATCH registers. This allows passing more data about boot from SPL to U-Boot, like the boot mode pads configuration. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Fabio Estevam <fabio.estevam@freescale.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de>
2012-05-15i.MX28: Add delay after CPU bypass is clearedMarek Vasut
This solves issues when larger amount of DRAM is used, like 256MB. Behave the same in case of CPU bypass as we do in case of EMI bypass, but wait 15 ms. We need to wait until the clock domain stabilizes. This issue seemed to have been caused by not waiting after frobbing with the CPU bypass, it was unrelated to memory, but had a direct impact, causing trouble. This was yet another X-File of the imx-bootlets, sigh. The conclusion is, trying a semi-random delay (there is delay after the EMI bypass change), the issue is fixed. Another possible explanation is that we do not do the "simple memory test" FSL does in their imx-bootlets (1000 R/W cycles to/from piece of the memory, while also outputing something on the serial port). This might have caused the similar delay in the imx-bootlets and therefore they didn't need to add this explicitly. For now, this seems good fix enough, but to me, whole that memory init code in imx-bootlets is completely flunked and it'd need deeper investigation. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Fabio Estevam <festevam@gmail.com> Acked-by: Stefano Babic <sbabic@denx.de> Acked-by: Detlev Zundel <dzu@denx.de>
2012-05-15Revert "i.MX28: Enable additional DRAM address bits"Marek Vasut
This reverts commit 69d26d09de1cb93e0a09ca71d9f0d41a66f0756a. Apparently, this commit got mainline only because of out-of-tree port and causes breakage on board that is mainline. Revert. Reason: * The OOT board has 512MB of DRAM, enabling this additional address line enabled it to work fine with 512MB of RAM. * Every mainline port has max. 256MB of DRAM, therefore this revert has no impact on any mainline port * Though this caused a problem with new M28 board with 256MB of DRAM where the chips are wired differently. The patch-to-be-reverted caused the DRAM to behave like this: [128MB chunk #1][128MB chunk #1 again][128MB chunk #2][128MB chunk #2 again] Therefore to retain the current one-memory-init-rules-them-all situation, revert this patch until another board emerges and will actually be pushed mainline that needs different setup. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Fabio Estevam <festevam@gmail.com>
2012-04-16DMA: Split the APBH DMA init into block and channel initMarek Vasut
This fixes the issue where mxs_dma_init() was called either twice or never, without introducing any new init hooks. The idea is to allow each and every device using the APBH DMA block to configure and request only the channels it uses, instead of making it call init for all the channels as is now. The common DMA block init part, which only configures the block, is then called from CPUs arch_cpu_init() call. NOTE: This patch depends on: http://patchwork.ozlabs.org/patch/150957/ Signed-off-by: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Fabio Estevam <fabio.estevam@freescale.com> Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
2012-03-29i.MX28: Enable caches by defaultMarek Vasut
Signed-off-by: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de>
2012-03-27i.MX28: Drop __naked function from spl_mem_initMarek Vasut
Instead of compiling the function and using the result as a constant, simply use the constant. NOTE: This patch works around bug: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52546 Signed-off-by: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Tom Rini <trini@ti.com>
2012-03-27i.MX28: Make the stabilization delays shorterMarek Vasut
Cut down the VDDIO/VDDA regulator stabilization delays to 500 uS. That should be enough according to the datasheet and bootlets. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Robert Deliën <robert@delien.nl> Cc: Fabio Estevam <festevam@gmail.com> Cc: Matthias Fuchs <matthias.fuchs@esd.eu>
2012-03-27i.MX28: Enable additional DRAM address bitsMarek Vasut
Enables all fourteen address lines for DRAM Signed-off-by: Marek Vasut <marex@denx.de> Acked-by: Marek Vasut <marek.vasut@gmail.com> Tested-by: Marek Vasut <marek.vasut@gmail.com>
2012-03-26Fix erroneous 32-bit access to hw_clkctrl_frac0 and hw_clkctrl_frac1 registersRobert Delien
This patch fixes erroneous 32-bit access to registers hw_clkctrl_frac0 and hw_clkctrl_frac1. Signed-off-by: Robert Delien <robert@delien.nl> Acked-by: Marek Vasut <marex@denx.de> Tested-by: Marek Vasut <marex@denx.de>
2012-03-26Renamed mx28_register to mx28_register_32 to prepare for mx28_register_8Robert Delien
This patch renames mx28_register to mx28_register_32 in order to prepare for the introduction of an 8-bit register, mx28_register_8. Signed-off-by: Robert Delien <robert@delien.nl> Acked-by: Marek Vasut <marex@denx.de> Tested-by: Marek Vasut <marex@denx.de>
2012-03-26i.MX28: Reformat the DRAM memory configuration dataMarek Vasut
Reformat the data so it's easier to navigate through them. Signed-off-by: Marek Vasut <marex@denx.de>
2012-03-26i.mx28: Replaced magic numbers for scratch register addresses with register ↵Robert Delien
definitions This patch replaces the use of magice numbers for scratch register addresses with earlier defined register definitions. Signed-off-by: Robert Delien <robert@delien.nl>
2012-02-27MX28: Fix get_timer() / get_tbclk() issueMarek Vasut
Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Fabio Estevam <festevam@gmail.com>
2012-02-27mx28: fix SPL code to make USB booting workMatthias Fuchs
This patch fixes booting i.MX28 CPUs via USB download. In this mode the CPU's bootrom implements a USB HID device that accepts a bootstream. When downloading the bootstream via USB, first the SPL code is received and executed. Then the u-boot image is received and called. The USB bootmode is interrupt driven. This patch fixes two things: 1) The ARM's fast interrupt mode is disabled when the SPL code has been run. So save and restore the CPSR register. 2) Save and restore c1 control register: the exception vector location needs to be set back to bootrom space to make the USB interrupts work again. The SPL code needs to change this option for the ram size probing. Signed-off-by: Matthias Fuchs <matthias.fuchs@esd.eu> Acked-by: Marek Vasut <marek.vasut@gmail.com>
2012-02-27i.MX28: Fix VDDIO and VDDA setupMarek Vasut
The DC power STS shouldn't be checked if booting off 5V supply. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Robert Deliën <robert@delien.nl> Cc: Fabio Estevam <festevam@gmail.com> Cc: Matthias Fuchs <matthias.fuchs@esd.eu>
2012-02-12mx28: Show CPU frequencyFabio Estevam
Showing CPU frequency during boot is useful information. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Acked-by: Stefano Babic <sbabic@denx.de>
2012-01-16mx28: fix clearing of IRQs in power initZach Sadecki
There are 2 locations in the power init code for the mx28 where IRQs are not being cleared because incorrect methods to clear those bits were being used. This was causing my board to get stuck waiting for POWER_CTRL_VDD5V_DROOP_IRQ to clear. Using the correct method to clear the IRQs fixes it. Signed-off-by: Zach Sadecki <zach@itwatchdogs.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Stefano Babic <sbabic@denx.de> Acked-by: Marek Vasut <marek.vasut@gmail.com>
2012-01-16mx28: Let dram_init be common for mx28Fabio Estevam
Let dram_init function be a common function, so that other mx28 boards can reuse it. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Marek Vasut <marek.vasut@gmail.com>
2012-01-16mx28: Let imx_get_mac_from_fuse be common for mx28Fabio Estevam
Let imx_get_mac_from_fuse function be a common function, so that other mx28 boards can reuse it. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Marek Vasut <marek.vasut@gmail.com> Acked-by: Stefano Babic <sbabic@denx.de>
2012-01-16mx28: remove omap specific config optionsVeli-Pekka Peltola
Config options for OMAP are not used with i.MX28 so remove dead code. Signed-off-by: Veli-Pekka Peltola <veli-pekka.peltola@bluegiga.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Marek Vasut <marek.vasut@gmail.com> Cc: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Stefano Babic <sbabic@denx.de>
2011-12-09M28: Cleanup memsize.o OOT buildMarek Vasut
The current way memsize.c is built just made a symlink into the directory with SPL and then compiled it like any other file there. This was bad as that broke the out-of-tree build. The new way introduced in this patch uses the standard spl/Makefile methods (CONFIG_SPL_LIBCOMMON_SUPPORT / CONFIG_SPL_LIBGENERIC_SUPPORT) to let files in common/ be built. Because common/Makefile says memsize.c is always built (SPL and non-SPL build), this fixes our issue with memsize.c out-of-tree build. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Stefano Babic <sbabic@denx.de>
2011-12-09i.MX28: Move SPL to arch/arm/cpu/arm926ejs/mx28Marek Vasut
This moves SPL to common location so it can be reused by multiple boards. Also, this commit adjusts M28 SoM to avoid breakage due to the move. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Stefano Babic <sbabic@denx.de>
2011-11-11iMX28: Fix ARM vector handlingMarek Vasut
This patch introduces proper ARM vector handling for i.MX28 CPU. This issue wasn't addressed because the interrupts weren't enabled on any ARMv5 core, therefore the issue wasn't noticed earlier. In previous implementation, the vectoring code used by i.MX28 CPU when an exception happened was that of the SPL. With this change, the branch target when an exception happens can be reconfigured by U-Boot. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de>
2011-11-11iMX28: Add GPIO controlMarek Vasut
Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de>
2011-11-11iMX28: Add PINMUX controlMarek Vasut
Taken from Linux kernel with minor modifications: commit bf985969e27b507f734435a99df8bf745a3dbb2b Author: Shawn Guo <shawn.guo@freescale.com> Date: Mon Dec 20 22:57:43 2010 +0800 ARM: mxs: Add iomux support Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de>
2011-11-11iMX28: Initial support for iMX28 CPUMarek Vasut
This patch supports: - Timers - Debug UART - Clock Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de>
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