This patch adds initial support for the Hawkboard-L138 system It is under the machine name "omapl138_hawkboard". This system is based on the da850 davinci CPU architecture. Information on these system may be found at http://www.hawkboard.org. Basic support for the UART console is included in this patch. It's tested with latest Angstrom File Systems like ramdisk from http://alturl.com/imb45.
Signed-off-by: Victor Rodriguez <[email protected]> --- Changes since v6: 1) Change commit reference 2) Remove hack that shut down UART1 because it is unused at present on the hawkboard. It shares pins with McASP0 transmit/receive master clock, opening UART1 will lead to a series of spurious interrupts. Some filesystems call getty on UART1 irrespective of whether it is console or not. On such filesystems, not shutting down UART1 causes boot-failure because of interrupt flood. Notes: This patch is checked with b8a24f38d6ee61b819f73ba53d51e3445314f0dc from Kernel development tree for TI DaVinci family of processors. This patch works with da8xx_omapl_defconfig plus this patch. --- arch/arm/configs/da8xx_omapl_defconfig | 1 + arch/arm/mach-davinci/Kconfig | 8 +++ arch/arm/mach-davinci/Makefile | 1 + arch/arm/mach-davinci/board-omapl138-hawk.c | 64 +++++++++++++++++++++++ arch/arm/mach-davinci/include/mach/uncompress.h | 1 + 5 files changed, 75 insertions(+), 0 deletions(-) create mode 100644 arch/arm/mach-davinci/board-omapl138-hawk.c diff --git a/arch/arm/configs/da8xx_omapl_defconfig b/arch/arm/configs/da8xx_omapl_defconfig index f8a47ee..cdc40c4 100644 --- a/arch/arm/configs/da8xx_omapl_defconfig +++ b/arch/arm/configs/da8xx_omapl_defconfig @@ -18,6 +18,7 @@ CONFIG_ARCH_DAVINCI=y CONFIG_ARCH_DAVINCI_DA830=y CONFIG_ARCH_DAVINCI_DA850=y CONFIG_MACH_MITYOMAPL138=y +CONFIG_MACH_OMAPL138_HAWKBOARD=y CONFIG_DAVINCI_RESET_CLOCKS=y CONFIG_NO_HZ=y CONFIG_HIGH_RES_TIMERS=y diff --git a/arch/arm/mach-davinci/Kconfig b/arch/arm/mach-davinci/Kconfig index 9aca60c..b77b860 100644 --- a/arch/arm/mach-davinci/Kconfig +++ b/arch/arm/mach-davinci/Kconfig @@ -193,6 +193,14 @@ config MACH_MITYOMAPL138 System on Module. Information on this SoM may be found at http://www.mitydsp.com +config MACH_OMAPL138_HAWKBOARD + bool "TI AM1808 / OMAPL-138 Hawkboard platform" + depends on ARCH_DAVINCI_DA850 + help + Say Y here to select the TI AM1808 / OMAPL-138 Hawkboard platform . + Information of this board may be found at + http://www.hawkboard.org/ + config DAVINCI_MUX bool "DAVINCI multiplexing support" depends on ARCH_DAVINCI diff --git a/arch/arm/mach-davinci/Makefile b/arch/arm/mach-davinci/Makefile index a7a70d1..0b87a1c 100644 --- a/arch/arm/mach-davinci/Makefile +++ b/arch/arm/mach-davinci/Makefile @@ -34,6 +34,7 @@ obj-$(CONFIG_MACH_DAVINCI_DA830_EVM) += board-da830-evm.o obj-$(CONFIG_MACH_DAVINCI_DA850_EVM) += board-da850-evm.o obj-$(CONFIG_MACH_TNETV107X) += board-tnetv107x-evm.o obj-$(CONFIG_MACH_MITYOMAPL138) += board-mityomapl138.o +obj-$(CONFIG_MACH_OMAPL138_HAWKBOARD) += board-omapl138-hawk.o # Power Management obj-$(CONFIG_CPU_FREQ) += cpufreq.o diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c b/arch/arm/mach-davinci/board-omapl138-hawk.c new file mode 100644 index 0000000..014876b --- /dev/null +++ b/arch/arm/mach-davinci/board-omapl138-hawk.c @@ -0,0 +1,64 @@ +/* + * Hawkboard.org based on TI's OMAP-L138 Platform + * + * Initial code: Syed Mohammed Khasim + * + * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of + * any kind, whether express or implied. + */ +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/console.h> +#include <linux/gpio.h> + +#include <asm/mach-types.h> +#include <asm/mach/arch.h> + +#include <mach/cp_intc.h> +#include <mach/da8xx.h> + +static struct davinci_uart_config omapl138_hawk_uart_config __initdata = { + .enabled_uarts = 0x7, +}; + +static __init void omapl138_hawk_init(void) +{ + int ret; + + davinci_serial_init(&omapl138_hawk_uart_config); + + ret = da8xx_register_watchdog(); + if (ret) + pr_warning("omapl138_hawk_init: " + "watchdog registration failed: %d\n", + ret); +} + +#ifdef CONFIG_SERIAL_8250_CONSOLE +static int __init omapl138_hawk_console_init(void) +{ + if (!machine_is_omapl138_hawkboard()) + return 0; + + return add_preferred_console("ttyS", 2, "115200"); +} +console_initcall(omapl138_hawk_console_init); +#endif + +static void __init omapl138_hawk_map_io(void) +{ + da850_init(); +} + +MACHINE_START(OMAPL138_HAWKBOARD, "AM18x/OMAP-L138 Hawkboard") + .phys_io = IO_PHYS, + .io_pg_offst = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc, + .boot_params = (DA8XX_DDR_BASE + 0x100), + .map_io = omapl138_hawk_map_io, + .init_irq = cp_intc_init, + .timer = &davinci_timer, + .init_machine = omapl138_hawk_init, +MACHINE_END diff --git a/arch/arm/mach-davinci/include/mach/uncompress.h b/arch/arm/mach-davinci/include/mach/uncompress.h index d370391..47723e8 100644 --- a/arch/arm/mach-davinci/include/mach/uncompress.h +++ b/arch/arm/mach-davinci/include/mach/uncompress.h @@ -89,6 +89,7 @@ static inline void __arch_decomp_setup(unsigned long arch_id) DEBUG_LL_DA8XX(davinci_da830_evm, 2); DEBUG_LL_DA8XX(davinci_da850_evm, 2); DEBUG_LL_DA8XX(mityomapl138, 1); + DEBUG_LL_DA8XX(omapl138_hawkboard, 2); /* TNETV107x boards */ DEBUG_LL_TNETV107X(tnetv107x, 1); -- 1.6.0.5 _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
