diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-18 08:05:20 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-18 08:05:20 -0800 |
commit | 6a7f6ec9512970874fa9fc883ea44d77d0f287c2 (patch) | |
tree | 2bce1665b5a9e81bdd95f6e34410bdf13c58350e /arch/m68knommu/platform/54xx/config.c | |
parent | c6fa63c659b3dd121f21afe7529f505505e79b23 (diff) | |
parent | 4c65595ec506ff65c90b1d9fed17333005fa5eb5 (diff) |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: (25 commits)
m68knommu: fix broken setting of irq_chip and handler
m68knommu: switch to using -mcpu= flags for ColdFire targets
m68knommu: arch/m68knommu/Kconfig whitespace cleanup
m68knommu: create optimal separate instruction and data cache for ColdFire
m68knommu: support ColdFire caches that do copyback and write-through
m68knommu: support version 2 ColdFire split cache
m68knommu: make cache push code ColdFire generic
m68knommu: clean up ColdFire cache control code
m68knommu: move inclusion of ColdFire v4 cache registers
m68knommu: merge bit definitions for version 3 ColdFire cache controller
m68knommu: create bit definitions for the version 2 ColdFire cache controller
m68knommu: remove empty __iounmap() it is no used
m68knommu: remove kernel_map() code, it is not used
m68knommu: remove do_page_fault(), it is not used
m68knommu: use user stack pointer hardware on some ColdFire cores
m68knommu: remove command line printing DEBUG
m68knommu: remove fasthandler interrupt code
m68knommu: move UART addressing to part specific includes
m68knommu: fix clock rate value reported for ColdFire 54xx parts
m68knommu: move ColdFire CPU names into their headers
...
Diffstat (limited to 'arch/m68knommu/platform/54xx/config.c')
-rw-r--r-- | arch/m68knommu/platform/54xx/config.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/arch/m68knommu/platform/54xx/config.c b/arch/m68knommu/platform/54xx/config.c new file mode 100644 index 00000000000..78130984db9 --- /dev/null +++ b/arch/m68knommu/platform/54xx/config.c @@ -0,0 +1,115 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/54xx/config.c + * + * Copyright (C) 2010, Philippe De Muyter <phdm@macqel.be> + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/m54xxsim.h> +#include <asm/mcfuart.h> +#include <asm/m54xxgpt.h> + +/***************************************************************************/ + +static struct mcf_platform_uart m54xx_uart_platform[] = { + { + .mapbase = MCF_MBAR + MCFUART_BASE1, + .irq = 64 + 35, + }, + { + .mapbase = MCF_MBAR + MCFUART_BASE2, + .irq = 64 + 34, + }, + { + .mapbase = MCF_MBAR + MCFUART_BASE3, + .irq = 64 + 33, + }, + { + .mapbase = MCF_MBAR + MCFUART_BASE4, + .irq = 64 + 32, + }, +}; + +static struct platform_device m54xx_uart = { + .name = "mcfuart", + .id = 0, + .dev.platform_data = m54xx_uart_platform, +}; + +static struct platform_device *m54xx_devices[] __initdata = { + &m54xx_uart, +}; + + +/***************************************************************************/ + +static void __init m54xx_uart_init_line(int line, int irq) +{ + int rts_cts; + + /* enable io pins */ + switch (line) { + case 0: + rts_cts = 0; break; + case 1: + rts_cts = MCF_PAR_PSC_RTS_RTS; break; + case 2: + rts_cts = MCF_PAR_PSC_RTS_RTS | MCF_PAR_PSC_CTS_CTS; break; + case 3: + rts_cts = 0; break; + } + __raw_writeb(MCF_PAR_PSC_TXD | rts_cts | MCF_PAR_PSC_RXD, + MCF_MBAR + MCF_PAR_PSC(line)); +} + +static void __init m54xx_uarts_init(void) +{ + const int nrlines = ARRAY_SIZE(m54xx_uart_platform); + int line; + + for (line = 0; (line < nrlines); line++) + m54xx_uart_init_line(line, m54xx_uart_platform[line].irq); +} + +/***************************************************************************/ + +static void mcf54xx_reset(void) +{ + /* disable interrupts and enable the watchdog */ + asm("movew #0x2700, %sr\n"); + __raw_writel(0, MCF_MBAR + MCF_GPT_GMS0); + __raw_writel(MCF_GPT_GCIR_CNT(1), MCF_MBAR + MCF_GPT_GCIR0); + __raw_writel(MCF_GPT_GMS_WDEN | MCF_GPT_GMS_CE | MCF_GPT_GMS_TMS(4), + MCF_MBAR + MCF_GPT_GMS0); +} + +/***************************************************************************/ + +void __init config_BSP(char *commandp, int size) +{ + mach_reset = mcf54xx_reset; + m54xx_uarts_init(); +} + +/***************************************************************************/ + +static int __init init_BSP(void) +{ + + platform_add_devices(m54xx_devices, ARRAY_SIZE(m54xx_devices)); + return 0; +} + +arch_initcall(init_BSP); + +/***************************************************************************/ |