diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-05 08:53:20 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-05 08:53:20 -0700 |
commit | c3d1f1746b966907ba5ad2f75ddca24db8b21147 (patch) | |
tree | 548a25e104d8bdb906030b8d3bf78fbfde0e5817 /arch/mips/pnx833x/stb22x/board.c | |
parent | 66eddbfcc1f6610fa7c73c8d20a57eaf8e284e2f (diff) | |
parent | 0d365753d0b7c26043fdfa97790411606fb40112 (diff) |
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: (150 commits)
MIPS: PowerTV: Separate PowerTV USB support from non-USB code
MIPS: strip the un-needed sections of vmlinuz
MIPS: Clean up the calculation of VMLINUZ_LOAD_ADDRESS
MIPS: Clean up arch/mips/boot/compressed/decompress.c
MIPS: Clean up arch/mips/boot/compressed/ld.script
MIPS: Unify the suffix of compressed vmlinux.bin
MIPS: PowerTV: Add Gaia platform definitions.
MIPS: BCM47xx: Fix nvram_getenv return value.
MIPS: Octeon: Allow more than 3.75GB of memory with PCIe
MIPS: Clean up notify_die() usage.
MIPS: Remove unused task_struct.trap_no field.
Documentation: Mention that KProbes is supported on MIPS
SAMPLES: kprobe_example: Make it print something on MIPS.
MIPS: kprobe: Add support.
MIPS: Add instrunction format for BREAK and SYSCALL
MIPS: kprobes: Define regs_return_value()
MIPS: Ritually kill stupid printk.
MIPS: Octeon: Disallow MSI-X interrupt and fall back to MSI interrupts.
MIPS: Octeon: Support 256 MSI on PCIe
MIPS: Decode core number for R2 CPUs.
...
Diffstat (limited to 'arch/mips/pnx833x/stb22x/board.c')
-rw-r--r-- | arch/mips/pnx833x/stb22x/board.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/arch/mips/pnx833x/stb22x/board.c b/arch/mips/pnx833x/stb22x/board.c new file mode 100644 index 000000000000..644eb7c3210f --- /dev/null +++ b/arch/mips/pnx833x/stb22x/board.c @@ -0,0 +1,133 @@ +/* + * board.c: STB225 board support. + * + * Copyright 2008 NXP Semiconductors + * Chris Steel <chris.steel@nxp.com> + * Daniel Laird <daniel.j.laird@nxp.com> + * + * Based on software written by: + * Nikita Youshchenko <yoush@debian.org>, based on PNX8550 code. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include <linux/init.h> +#include <asm/bootinfo.h> +#include <linux/mm.h> +#include <pnx833x.h> +#include <gpio.h> + +/* endianess twiddlers */ +#define PNX8335_DEBUG0 0x4400 +#define PNX8335_DEBUG1 0x4404 +#define PNX8335_DEBUG2 0x4408 +#define PNX8335_DEBUG3 0x440c +#define PNX8335_DEBUG4 0x4410 +#define PNX8335_DEBUG5 0x4414 +#define PNX8335_DEBUG6 0x4418 +#define PNX8335_DEBUG7 0x441c + +int prom_argc; +char **prom_argv, **prom_envp; + +extern void prom_init_cmdline(void); +extern char *prom_getenv(char *envname); + +const char *get_system_type(void) +{ + return "NXP STB22x"; +} + +static inline unsigned long env_or_default(char *env, unsigned long dfl) +{ + char *str = prom_getenv(env); + return str ? simple_strtol(str, 0, 0) : dfl; +} + +void __init prom_init(void) +{ + unsigned long memsize; + + prom_argc = fw_arg0; + prom_argv = (char **)fw_arg1; + prom_envp = (char **)fw_arg2; + + prom_init_cmdline(); + + memsize = env_or_default("memsize", 0x02000000); + add_memory_region(0, memsize, BOOT_MEM_RAM); +} + +void __init pnx833x_board_setup(void) +{ + pnx833x_gpio_select_function_alt(4); + pnx833x_gpio_select_output(4); + pnx833x_gpio_select_function_alt(5); + pnx833x_gpio_select_input(5); + pnx833x_gpio_select_function_alt(6); + pnx833x_gpio_select_input(6); + pnx833x_gpio_select_function_alt(7); + pnx833x_gpio_select_output(7); + + pnx833x_gpio_select_function_alt(25); + pnx833x_gpio_select_function_alt(26); + + pnx833x_gpio_select_function_alt(27); + pnx833x_gpio_select_function_alt(28); + pnx833x_gpio_select_function_alt(29); + pnx833x_gpio_select_function_alt(30); + pnx833x_gpio_select_function_alt(31); + pnx833x_gpio_select_function_alt(32); + pnx833x_gpio_select_function_alt(33); + +#if defined(CONFIG_MTD_NAND_PLATFORM) || defined(CONFIG_MTD_NAND_PLATFORM_MODULE) + /* Setup MIU for NAND access on CS0... + * + * (it seems that we must also configure CS1 for reliable operation, + * otherwise the first read ID command will fail if it's read as 4 bytes + * but pass if it's read as 1 word.) + */ + + /* Setup MIU CS0 & CS1 timing */ + PNX833X_MIU_SEL0 = 0; + PNX833X_MIU_SEL1 = 0; + PNX833X_MIU_SEL0_TIMING = 0x50003081; + PNX833X_MIU_SEL1_TIMING = 0x50003081; + + /* Setup GPIO 00 for use as MIU CS1 (CS0 is not multiplexed, so does not need this) */ + pnx833x_gpio_select_function_alt(0); + + /* Setup GPIO 04 to input NAND read/busy signal */ + pnx833x_gpio_select_function_io(4); + pnx833x_gpio_select_input(4); + + /* Setup GPIO 05 to disable NAND write protect */ + pnx833x_gpio_select_function_io(5); + pnx833x_gpio_select_output(5); + pnx833x_gpio_write(1, 5); + +#elif defined(CONFIG_MTD_CFI) || defined(CONFIG_MTD_CFI_MODULE) + + /* Set up MIU for 16-bit NOR access on CS0 and CS1... */ + + /* Setup MIU CS0 & CS1 timing */ + PNX833X_MIU_SEL0 = 1; + PNX833X_MIU_SEL1 = 1; + PNX833X_MIU_SEL0_TIMING = 0x6A08D082; + PNX833X_MIU_SEL1_TIMING = 0x6A08D082; + + /* Setup GPIO 00 for use as MIU CS1 (CS0 is not multiplexed, so does not need this) */ + pnx833x_gpio_select_function_alt(0); +#endif +} |