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* atmel_spi: Driver for the Atmel SPI controllerHans-Christian Egtvedt2008-06-03-0/+43
| | | | | | | | | | | | | | | This adds a driver for the SPI controller found on most AT91 and AVR32 chips, implementing the new SPI API. Changed in v4: - Update to new API - Handle zero-length transfers appropriately. The user may send a zero-length SPI transfer with SPI_XFER_END set in order to deactivate the chip select after a series of transfers with chip select active. This is useful e.g. when polling the status register of DataFlash. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* avr32: Fix theoretical race in udelay()Haavard Skinnemoen2008-05-27-9/+7
| | | | | | | | | | | If the specified delay is very short, the cycle counter may go past the "end" time we are waiting for before we get around to reading it. Fix it by checking the different between the cycle count "now" and the cycle count at the beginning. This will work as long as the delay measured in number of cycles is below 2^31. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: Compile atmel_mci.o conditionallyHaavard Skinnemoen2008-05-27-5/+1
| | | | | | | Remove #ifdef CONFIG_MMC from the source file and use conditional compilation in the Makefile instead. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: Fix wrong error flags in atmel_mci driverHaavard Skinnemoen2008-05-27-1/+1
| | | | | | | | Make sure we check for CRC errors when sending commands that use CRC checking. Reported-by: Gururaja Hebbar K R <gururajakr@sanyo.co.in> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: Fix two warnings in atmel_mci.cHaavard Skinnemoen2008-05-27-2/+4
| | | | | | The warnings are harmless but annoying. Let's fix them. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: Rework SDRAM initialization codeHaavard Skinnemoen2008-05-27-63/+39
| | | | | | | | | | | | | | This cleans up the SDRAM initialization and related code a bit, and allows faster booting. * Add definitions for EBI and internal SRAM to asm/arch/memory-map.h * Remove memory test from sdram_init() and make caller responsible for verifying the SDRAM and determining its size. * Remove base_address member from struct sdram_config (was sdram_info) * Add data_bits member to struct sdram_config and kill CFG_SDRAM_16BIT * Add support for a common STK1000 hack: 16MB SDRAM instead of 8. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: Do stricter stack checking in the exception handlerHaavard Skinnemoen2008-05-27-1/+2
| | | | | | | Don't do a stack dump if the stack pointer is outside the memory area reserved for stack. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: Use the same entry point for reset and exception handlingHaavard Skinnemoen2008-05-27-74/+120
| | | | | | | | | | | | | | Since the reset vector is always aligned to a very large boundary, we can save a couple of KB worth of alignment padding by placing the exception vectors at the same address. Deciding which one it is is easy: If we're handling an exception, the CPU is in Exception mode. If we're starting up after reset, the CPU is in Supervisor mode. So this adds a very minimal overhead to the reset path (only executed once) and the exception handling path (normally never executed at all.) Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: Rename pm_init() as clk_init() and make SoC-specificHaavard Skinnemoen2008-05-27-44/+74
| | | | | | | | pm_init() was always more about clock initialization than anything else. Dealing with PLLs, clock gating and such is also inherently SoC-specific, so move it into a SoC-specific directory. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: Use new-style Makefile for the at32ap platformHaavard Skinnemoen2008-05-27-7/+14
| | | | | | This makes it easier to avoid compiling certain files later. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: Remove unused file cpu/at32ap/pm.cHaavard Skinnemoen2008-05-27-42/+0
| | | | Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: Get rid of the .flashprog sectionHaavard Skinnemoen2008-05-27-6/+0
| | | | | | | | | | | | The .flashprog section was only needed back when we were running directly from flash, and it's even more useless on NGW100 since it uses the CFI flash driver which never used this workaround in the first place. Remove it on STK1000 as well, and get rid of all the associated code and annotations. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* avr32: Disable the AP7000 internal watchdog on startupDavid Brownell2008-05-27-0/+4
| | | | | | | | | This patch forces the watchdog off in all cases. That will at least get rid of the constant reboot cycle, though it won't let the watchdog actually run in the new kernels: its probe() comes up with a polite warning. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* AVR32: Make SDRAM refresh rate configurableHaavard Skinnemoen2008-02-05-1/+5
| | | | | | | | | | | | | | The existing code assumes the SDRAM row refresh period should always be 15.6 us. This is not always true, and indeed on the ATNGW100, the refresh rate should really be 7.81 us. Add a refresh_period member to struct sdram_info and initialize it properly for both ATSTK1000 and ATNGW100. Out-of-tree boards will panic() until the refresh_period member is updated properly. Big thanks to Gerhard Berghofer for pointing out this issue. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* AVR32: Fix wrong pin setup for USART3Haavard Skinnemoen2007-12-17-1/+1
| | | | | | | | | | | | As reported by Gerhard Berghofer: in "gpio_enable_usart3" the correct pins for USART 3 are PB17 and PB18 instead of PB18 and PB19. which is obviously correct. There's currently no code that uses USART3, but custom boards may run into problems. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* AVR32: Make some AT32AP700x peripherals optionalHaavard Skinnemoen2007-12-17-0/+7
| | | | | | | | | | | Add a chip-features file providing definitions of the form AT32AP700x_CHIP_HAS_<peripheral> to indicate the availability of the given peripheral on the currently selected chip. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* AVR32: Rename at32ap7000 -> at32ap700xHaavard Skinnemoen2007-12-17-0/+0
| | | | | | | | | The SoC-specific code for all the AT32AP700x CPUs is practically identical; the only difference is that some chips have less features than others. By doing this rename, we can add support for the AP7000 derivatives simply by making some features conditional. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* atmel_mci: Show SR when block read failsHaavard Skinnemoen2007-12-17-6/+7
| | | | | | | Show controller status as well as card status when an error occurs during block read. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* atmel_mci: Fix data timeout valueHaavard Skinnemoen2007-08-13-0/+59
| | | | | | | | | Calculate the data timeout based on values from the CSD instead of just using a hardcoded DTOR value. This is a backport of a similar fix in BSP 2.0, with one additional fix: the DTOCYC value is rounded up instead of down. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* AVR32: Include <div64.h> instead of <asm/div64.h>Haavard Skinnemoen2007-08-13-1/+1
| | | | | | | | | | | include/asm-avr32/div64.h was recently moved to include/div64.h, but cpu/at32ap/interrupts.c wasn't properly updated (an earlier version of the patch was merged perhaps?) This patch updates cpu/at32ap/interrupts.c so that the avr32 port compiles again. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* atmel_mci: Use 512 byte blocksize if possibleHaavard Skinnemoen2007-08-13-4/+21
| | | | | | | | | | | | Instead of always using the largest blocksize the card supports, check if it can support smaller block sizes and use 512 bytes if possible. Most cards do support this, and other parts of u-boot seem to have trouble with block sizes different from 512 bytes. Also enable underrun/overrun protection. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
* Merge with /home/wd/git/u-boot/custodian/u-boot-avr32; code cleanup.Wolfgang Denk2007-04-18-898/+1022
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| * Atmel MCI driverHaavard Skinnemoen2007-04-14-1/+675
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Driver for the Atmel MCI controller (MMC interface) for AT32AP CPUs. The AT91 ARM-based CPUs use basically the same hardware, so it should be possible to share this driver, but no effort has been made so far. Hardware documentation can be found in the AT32AP7000 data sheet, which can be downloaded from http://www.atmel.com/dyn/products/datasheets.asp?family_id=682 Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
| * AVR32: Add clk and gpio infrastructure for mmciHaavard Skinnemoen2007-04-14-0/+10
| | | | | | | | | | | | | | Implement functions for configuring the mmci pins, as well as functions for getting the clock rate of the mmci controller. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
| * AVR32: Add clk and gpio infrastructure for macb0 and macb1Haavard Skinnemoen2007-04-14-0/+50
| | | | | | | | | | | | | | | | Implement functions for configuring the macb0 and macb1 pins, as well as functions for getting the clock rate of the various busses the macb ethernet controllers are connected to. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
| * AVR32: Relocate u-boot to SDRAMHaavard Skinnemoen2007-04-14-36/+90
| | | | | | | | | | | | | | Relocate the u-boot image into SDRAM like everyone else does. This means that we can handle much larger .data and .bss than we used to. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
| * AVR32: Resource management rewriteHaavard Skinnemoen2007-04-14-862/+198
| | | | | | | | | | | | | | | | | | | | | | | | | | Rewrite the resource management code (i.e. I/O memory, clock gating, gpio) so it doesn't depend on any global state. This is necessary because this code is heavily used before relocation to RAM, so we can't write to any global variables. As an added bonus, this makes u-boot's memory footprint a bit smaller, although some functionality has been left out; all clocks are enabled all the time, and there's no checking for gpio line conflicts. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
| * AVR32: Split start_u_boot into board_init_f and board_init_rHaavard Skinnemoen2007-04-14-1/+1
|/ | | | | | | | | Split the avr32 initialization code into a function to run before relocation, board_init_f and a function to run after relocation, board_init_r. For now, board_init_f simply calls board_init_r at the end. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* Fix "ar" flags in some Makefiles to allow for silent "make -s"Wolfgang Denk2006-10-27-2/+2
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* Add AT32AP CPU and AT32AP7000 SoC supportWolfgang Denk2006-10-24-0/+2287
Patch by Haavard Skinnemoen, 06 Sep 2006 This patch adds support for the AT32AP CPU family and the AT32AP7000 chip, which is the first chip implementing the AVR32 architecture. The AT32AP CPU core is a high-performance implementation featuring a 7-stage pipeline, separate instruction- and data caches, and a MMU. For more information, please see the "AVR32 AP Technical Reference": http://www.atmel.com/dyn/resources/prod_documents/doc32001.pdf In addition to this, the AT32AP7000 chip comes with a large set of integrated peripherals, many of which are shared with the AT91 series of ARM-based microcontrollers from Atmel. Full data sheet is available here: http://www.atmel.com/dyn/resources/prod_documents/doc32003.pdf Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
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