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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-14 17:48:14 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-14 17:48:14 -0700 |
commit | 2ca7d674d7ab2220707b2ada0b690c0e7c95e7ac (patch) | |
tree | 9c0927ed1d540e5fd704c1f82689870786514655 /arch/arm/mach-bcmring/csp/chipc/chipcHw_reset.c | |
parent | 2195d2818c37bdf263865f1e9effccdd9fc5f9d4 (diff) | |
parent | 87d721ad7a37b7650dd710c88dd5c6a5bf9fe996 (diff) | |
download | op-kernel-dev-2ca7d674d7ab2220707b2ada0b690c0e7c95e7ac.zip op-kernel-dev-2ca7d674d7ab2220707b2ada0b690c0e7c95e7ac.tar.gz |
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (257 commits)
[ARM] Update mach-types
ARM: 5636/1: Move vendor enum to AMBA include
ARM: Fix pfn_valid() for sparse memory
[ARM] orion5x: Add LaCie NAS 2Big Network support
[ARM] pxa/sharpsl_pm: zaurus c3000 aka spitz: fix resume
ARM: 5686/1: at91: Correct AC97 reset line in at91sam9263ek board
ARM: 5640/1: This patch modifies the support of AC97 on the at91sam9263 ek board
ARM: 5689/1: Update default config of HP Jornada 700-series machines
ARM: 5691/1: fix cache aliasing issues between kmap() and kmap_atomic() with highmem
ARM: 5688/1: ks8695_serial: disable_irq() lockup
ARM: 5687/1: fix an oops with highmem
ARM: 5684/1: Add nuc960 platform to w90x900
ARM: 5683/1: Add nuc950 platform to w90x900
ARM: 5682/1: Add cpu.c and dev.c and modify some files of w90p910 platform
ARM: 5626/1: add suspend/resume functions to amba-pl011 serial driver
ARM: 5625/1: fix hard coded 4K resource size in amba bus detection
MMC: MMCI: convert realview MMC to use gpiolib
ARM: 5685/1: Make MMCI driver compile without gpiolib
ARM: implement highpte
ARM: Show FIQ in /proc/interrupts on CONFIG_FIQ
...
Fix up trivial conflict in arch/arm/kernel/signal.c.
It was due to the TIF_NOTIFY_RESUME addition in commit d0420c83f ("KEYS:
Extend TIF_NOTIFY_RESUME to (almost) all architectures") and follow-ups.
Diffstat (limited to 'arch/arm/mach-bcmring/csp/chipc/chipcHw_reset.c')
-rw-r--r-- | arch/arm/mach-bcmring/csp/chipc/chipcHw_reset.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/arch/arm/mach-bcmring/csp/chipc/chipcHw_reset.c b/arch/arm/mach-bcmring/csp/chipc/chipcHw_reset.c new file mode 100644 index 0000000..2671d88 --- /dev/null +++ b/arch/arm/mach-bcmring/csp/chipc/chipcHw_reset.c @@ -0,0 +1,124 @@ +/***************************************************************************** +* Copyright 2003 - 2008 Broadcom Corporation. All rights reserved. +* +* Unless you and Broadcom execute a separate written software license +* agreement governing use of this software, this software is licensed to you +* under the terms of the GNU General Public License version 2, available at +* http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). +* +* Notwithstanding the above, under no circumstances may you combine this +* software in any way with any other Broadcom software provided under a +* license other than the GPL, without Broadcom's express prior written +* consent. +*****************************************************************************/ + +/* ---- Include Files ---------------------------------------------------- */ +#include <csp/stdint.h> +#include <mach/csp/chipcHw_def.h> +#include <mach/csp/chipcHw_inline.h> +#include <csp/intcHw.h> +#include <csp/cache.h> + +/* ---- Private Constants and Types --------------------------------------- */ +/* ---- Private Variables ------------------------------------------------- */ +void chipcHw_reset_run_from_aram(void); + +typedef void (*RUNFUNC) (void); + +/****************************************************************************/ +/** +* @brief warmReset +* +* @note warmReset configures the clocks which are not reset back to the state +* required to execute on reset. To do so we need to copy the code into internal +* memory to change the ARM clock while we are not executing from DDR. +*/ +/****************************************************************************/ +void chipcHw_reset(uint32_t mask) +{ + int i = 0; + RUNFUNC runFunc = (RUNFUNC) (unsigned long)MM_ADDR_IO_ARAM; + + /* Disable all interrupts */ + intcHw_irq_disable(INTCHW_INTC0, 0xffffffff); + intcHw_irq_disable(INTCHW_INTC1, 0xffffffff); + intcHw_irq_disable(INTCHW_SINTC, 0xffffffff); + + { + REG_LOCAL_IRQ_SAVE; + if (mask & chipcHw_REG_SOFT_RESET_CHIP_SOFT) { + chipcHw_softReset(chipcHw_REG_SOFT_RESET_CHIP_SOFT); + } + /* Bypass the PLL clocks before reboot */ + pChipcHw->UARTClock |= chipcHw_REG_PLL_CLOCK_BYPASS_SELECT; + pChipcHw->SPIClock |= chipcHw_REG_PLL_CLOCK_BYPASS_SELECT; + + /* Copy the chipcHw_warmReset_run_from_aram function into ARAM */ + do { + ((uint32_t *) MM_IO_BASE_ARAM)[i] = + ((uint32_t *) &chipcHw_reset_run_from_aram)[i]; + i++; + } while (((uint32_t *) MM_IO_BASE_ARAM)[i - 1] != 0xe1a0f00f); /* 0xe1a0f00f == asm ("mov r15, r15"); */ + + CSP_CACHE_FLUSH_ALL; + + /* run the function from ARAM */ + runFunc(); + + /* Code will never get here, but include it to balance REG_LOCAL_IRQ_SAVE above */ + REG_LOCAL_IRQ_RESTORE; + } +} + +/* This function must run from internal memory */ +void chipcHw_reset_run_from_aram(void) +{ +/* Make sure, pipeline is filled with instructions coming from ARAM */ +__asm (" nop \n\t" + " nop \n\t" +#if defined(__KERNEL__) && !defined(STANDALONE) + " MRC p15,#0x0,r0,c1,c0,#0 \n\t" + " BIC r0,r0,#0xd \n\t" + " MCR p15,#0x0,r0,c1,c0,#0 \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" +#endif + " nop \n\t" + " nop \n\t" +/* Bypass the ARM clock and switch to XTAL clock */ + " MOV r2,#0x80000000 \n\t" + " LDR r3,[r2,#8] \n\t" + " ORR r3,r3,#0x20000 \n\t" + " STR r3,[r2,#8] \n\t" + + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" + " nop \n\t" +/* Issue reset */ + " MOV r3,#0x2 \n\t" + " STR r3,[r2,#0x80] \n\t" +/* End here */ + " MOV pc,pc \n\t"); +/* 0xe1a0f00f == asm ("mov r15, r15"); */ +} |