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2013-02-26	457c038 Browse files » ARM i.MX35: Let MAX clk be in run-mode-on ... The reset value for the MAX clk gate is 0b10, that is it is turned on in CPU run mode and off in stop mode. Configure it that way during startup. The 0b11 value previously in this field causes some nasty behaviour in the Linux kernel: - The i.MX35 has two bits per clock gate which are decoded as follows: 0b00 -> clock off 0b01 -> clock is on in run mode, off in wait/doze 0b10 -> clock is on in run/wait mode, off in doze 0b11 -> clock is always on The MAX clock is needed by the SoC, yet unused in the Kernel, so the common clock framework will disable it during late init time. It will only disable clocks though which it detects as being on. This detection is made depending on the lower bit of the gate. So with the value of 0b11 the clock framework will detect the clock as turned on, yet unused, hence it will turn it off and the system locks up. With the value of 0b10 instead, the clock framework will detect the clock as being disabled and will not try to turn it off, so the system works. The real bug is in the Linux clock framework. However, the value 0f 0b10 seems to be a sane default value, so restore it. This lets Linux work again and gives time to fix the bug in Linux. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 26 Feb 2013
2013-02-26	94466be Browse files » ARM i.MX: Fix booting from NOR when external nand boot is enabled ... We cannot jump to SDRAM unconditionally in imx*_barebox_boot_nand_external. When we really boot from NOR flash the binary is not yet copied to SDRAM. Instead, let the return value of imx_barebox_boot_nand_external() indicate whether we really boot from NAND and only jump to SDRAM in this case. Otherwise just continue to the normal SoC specific entry. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 26 Feb 2013
2013-02-19	19f8f11 Browse files » ARM: at91: use -EINVAL for invalid gpio on atmel_mci ... Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com> Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Fabio Porcedda authored on 19 Feb 2013 Sascha Hauer committed on 19 Feb 2013
2013-02-15	3fe6f23 Browse files » arm: fix memset-related crashes caused by recent GCC (4.7.2) optimizations ... Recent GCC versions (e.g. GCC-4.7.2) perform optimizations based on assumptions about the implementation of memset and similar functions. The current ARM optimized memset code does not return the value of its first argument, as is usually expected from standard implementations. For instance in the following function: void debug_mutex_lock_common(struct mutex lock, struct mutex_waiter waiter) { memset(waiter, MUTEX_DEBUG_INIT, sizeof(*waiter)); waiter->magic = waiter; INIT_LIST_HEAD(&waiter->list); } compiled as: 800554d0 <debug_mutex_lock_common>: 800554d0: e92d4008 push {r3, lr} 800554d4: e1a00001 mov r0, r1 800554d8: e3a02010 mov r2, #16 ; 0x10 800554dc: e3a01011 mov r1, #17 ; 0x11 800554e0: eb04426e bl 80165ea0 <memset> 800554e4: e1a03000 mov r3, r0 800554e8: e583000c str r0, [r3, #12] 800554ec: e5830000 str r0, [r3] 800554f0: e5830004 str r0, [r3, #4] 800554f4: e8bd8008 pop {r3, pc} GCC assumes memset returns the value of pointer 'waiter' in register r0; causing register/memory corruptions. This patch fixes the return value of the assembly version of memset. Could you please review, or suggest better alternatives ? Thanks, -- Ivan (this is a shorter and (hopefully) clearer repost of http://lists.infradead.org/pipermail/linux-arm-kernel/2013-January/144916.html) The patch adds a 'mov' instruction and merges an additional load+store into existing load/store instructions. For ease of review, here is a breakdown of the patch into 4 simple steps: Step 1 ====== Perform the following substitutions: ip -> r8, then r0 -> ip, and insert 'mov ip, r0' as the first statement of the function. At this point, we have a memset() implementation returning the proper result, but corrupting r8 on some paths (the ones that were using ip). Step 2 ====== Make sure r8 is saved and restored when (! CALGN(1)+0) == 1: save r8: - str lr, [sp, #-4]! + stmfd sp!, {r8, lr} and restore r8 on both exit paths: - ldmeqfd sp!, {pc} @ Now <64 bytes to go. + ldmeqfd sp!, {r8, pc} @ Now <64 bytes to go. (...) tst r2, #16 stmneia ip!, {r1, r3, r8, lr} - ldr lr, [sp], #4 + ldmfd sp!, {r8, lr} Step 3 ====== Make sure r8 is saved and restored when (! CALGN(1)+0) == 0: save r8: - stmfd sp!, {r4-r7, lr} + stmfd sp!, {r4-r8, lr} and restore r8 on both exit paths: bgt 3b - ldmeqfd sp!, {r4-r7, pc} + ldmeqfd sp!, {r4-r8, pc} (...) tst r2, #16 stmneia ip!, {r4-r7} - ldmfd sp!, {r4-r7, lr} + ldmfd sp!, {r4-r8, lr} Step 4 ====== Rewrite register list "r4-r7, r8" as "r4-r8". Signed-off-by: Ivan Djelic <ivan.djelic@parrot.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Ivan Djelic authored on 2 Feb 2013 Sascha Hauer committed on 15 Feb 2013
	efc93a7 Browse files » ARM i.MX28: Add missing return value in non-void function ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 15 Feb 2013
	4008fef Browse files » ARM at91sam9n12ek_defconfig: Fix reassigning of BAREBOX_MAX_IMAGE_SIZE ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 15 Feb 2013
	31668da Browse files » ARM OMAP phycard-a-l1: Add missing include ... Fixes: arch/arm/boards/phycard-a-l1/lowlevel.c: In function 'pcaal1_sdrc_init': arch/arm/boards/phycard-a-l1/lowlevel.c:105:2: warning: implicit declaration of function 'get_ram_size' [-Wimplicit-function-declaration] arch/arm/boards/phycard-a-l1/lowlevel.c:113:3: warning: implicit declaration of function 'hang' [-Wimplicit-function-declaration] Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 15 Feb 2013
	a6b1f17 Browse files » ARM i.MX21: Fix device names for gpio ... The i.MX21 has a imx1 gpio type. Change the name accordingly, otherwise the gpio driver does not probe successfully. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 15 Feb 2013
	9a98894 Browse files » ARM i.MX35: Fix device names for gpio ... The i.MX35 has a imx31 gpio type. Change the name accordingly, otherwise the gpio driver does not probe successfully. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 15 Feb 2013
2013-02-12	2ccd451 Browse files » ARM i.MX28: change default watchdog reset method ... The default setting for the imx28 watchdog is to do a power-off reset. If the SoC is only powered via battery, then the watchdog powers the chip down, though. According to the datasheet it should still be possible to execute a proper POR with battery power, but testing showed otherwise. When the watchdog power-off reset is disabled, a software reset is executed instead. This works with and without battery power. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Steffen Trumtrar authored on 11 Feb 2013 Sascha Hauer committed on 12 Feb 2013
2013-02-12	c0ba0a6 Browse files » ArchosG9: solve regression in second stage lowlevel init ... On ArchosG9 the second stage low-level init was the fallback default. Now that the low-level init is forcibly enabled it has to be skipped when already executed from first stage. Signed-off-by: Vicente Bergas <vicencb@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Vicente Bergas authored on 11 Feb 2013 Sascha Hauer committed on 12 Feb 2013
2013-02-11	5169b2d Browse files » sama5de3k: add gmacb support ... Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Tested-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Jean-Christophe PLAGNIOL-VILLARD authored on 8 Feb 2013 Sascha Hauer committed on 11 Feb 2013
2013-02-11	caf0661 Browse files » ARM: mmu: Clear unpredictable bits for translation table ... Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Alexander Shiyan authored on 8 Feb 2013 Sascha Hauer committed on 11 Feb 2013
2013-02-08	c49819d Browse files » arm: rename reset and common_reset to barebox_arm_reset_vector and arm_cpu_lowlevel_init ... reset is confusing with the cpu reset and impossible to grep Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Jean-Christophe PLAGNIOL-VILLARD authored on 5 Feb 2013 Sascha Hauer committed on 8 Feb 2013
2013-02-05	dc50b5b Browse files » beagle: add nand partition and boot ... Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Jean-Christophe PLAGNIOL-VILLARD authored on 31 Jan 2013 Sascha Hauer committed on 5 Feb 2013
	3b4fdb5 Browse files » at91sam9: drop AT91_BASE_SYS for sdram controller ... Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Jean-Christophe PLAGNIOL-VILLARD authored on 3 Feb 2013 Sascha Hauer committed on 5 Feb 2013
	ec5cfca Browse files » at91sam926x_lowlevel_init: use struct to pass soc config ... this will allow to pass more paraemeter to at91sam926x_lowlevel_init and drop AT91_BASE_SYS Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Jean-Christophe PLAGNIOL-VILLARD authored on 3 Feb 2013 Sascha Hauer committed on 5 Feb 2013
	6ab43e8 Browse files » at91sam926x_lowlevel_init: use pio macro ... this will make the code more readble Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Jean-Christophe PLAGNIOL-VILLARD authored on 3 Feb 2013 Sascha Hauer committed on 5 Feb 2013
	345fe0a Browse files » at91: gpio: split accessor so we can use them for early init ... Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Jean-Christophe PLAGNIOL-VILLARD authored on 3 Feb 2013 Sascha Hauer committed on 5 Feb 2013
	e43e149 Browse files » MIPS: pbl: fix none compression support ... Here's the error message: AS arch/mips/pbl/piggy.shipped.o arch/mips/pbl/piggy.shipped.S: Assembler messages: arch/mips/pbl/piggy.shipped.S:1: Error: unrecognized opcode `globl input_data' make[1]: * [arch/mips/pbl/piggy.shipped.o] Error 1 make: * [zbarebox.bin] Error 2 Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Antony Pavlov authored on 4 Feb 2013 Sascha Hauer committed on 5 Feb 2013
2013-02-04	7f2f5dc Browse files » ARM pbl: inline decompress function ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 4 Feb 2013
	c2ef9c4 Browse files » ARM: disable HAVE_CONFIGURABLE_MEMORY_LAYOUT ... HAVE_CONFIGURABLE_MEMORY_LAYOUT was first meant as a feature, now it's a feature to remove it. barebox on ARM now completely uses the memory passed in from the lowlevel code and configures the malloc area and stack space during runtime making it obsolete to hardcode these values. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 4 Feb 2013
	65f7a71 Browse files » ARM: Automatically determine malloc size ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 4 Feb 2013
	b7bcba8 Browse files » ARM: Enable mmu early ... This optionally enabled the MMU in the PBL or during early startup for the non PBL case. The regular MMU init code will pickup the already enabled MMU later. This might complicate debugging early code, so this has been made optional. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 4 Feb 2013
	93ef44f Browse files » ARM: Factor out early mmu code ... Move early mmu code to a separate file so that it can be used from the pbl and the regular image. Disabling the mmu can be dropped since the regular mmu code is now able to pickup an enabled mmu. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 4 Feb 2013
	02c0f0b Browse files » ARM mmu: pickup already enabled mmu ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 4 Feb 2013
	d2a7bed Browse files » ARM pbl: Use dynamic parameters for early malloc space ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 4 Feb 2013
	8e19ee9 Browse files » ARM: Setup stack at end of SDRAM ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 4 Feb 2013
	86db575 Browse files » ARM start: pickup parameters from pbl ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 4 Feb 2013
	fbf7653 Browse files » ARM start-pbl: call uncompressed binary with arguments ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 4 Feb 2013