diff options
author | Jon Ringle <jon.ringle@comdial.com> | 2005-10-28 16:19:37 +0100 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-10-28 16:19:37 +0100 |
commit | 0b83f1400fa6e5f0d4afcff033628a16c163862a (patch) | |
tree | c6fa01fd5a8d156b415ba9203f8ad349165de8ec /arch/arm/mach-clps711x | |
parent | b57235215933d5fde4013e2448223b934b4ac2b7 (diff) | |
download | kernel_samsung_crespo-0b83f1400fa6e5f0d4afcff033628a16c163862a.zip kernel_samsung_crespo-0b83f1400fa6e5f0d4afcff033628a16c163862a.tar.gz kernel_samsung_crespo-0b83f1400fa6e5f0d4afcff033628a16c163862a.tar.bz2 |
[ARM] 2918/1: [update] Base port of Comdial MP1000 platfrom
Patch from Jon Ringle
Updated 2898/1 per comments:
- Removed fixup
- Moved code in mach-mp1000/ to mach-clps711x/
- Cleaned up code in mp1000-seprom.c. Eliminated code that displayed the contents of the eeprom
Please comment.
Signed-off-by: Jon Ringle
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-clps711x')
-rw-r--r-- | arch/arm/mach-clps711x/Kconfig | 11 | ||||
-rw-r--r-- | arch/arm/mach-clps711x/Makefile | 1 | ||||
-rw-r--r-- | arch/arm/mach-clps711x/mp1000-mach.c | 49 | ||||
-rw-r--r-- | arch/arm/mach-clps711x/mp1000-mm.c | 47 | ||||
-rw-r--r-- | arch/arm/mach-clps711x/mp1000-seprom.c | 195 |
5 files changed, 303 insertions, 0 deletions
diff --git a/arch/arm/mach-clps711x/Kconfig b/arch/arm/mach-clps711x/Kconfig index 0793dcf..d5c1550 100644 --- a/arch/arm/mach-clps711x/Kconfig +++ b/arch/arm/mach-clps711x/Kconfig @@ -69,6 +69,17 @@ config EP72XX_ROM_BOOT You almost surely want to say N here. +config MACH_MP1000 + bool "MACH_MP1000" + help + Say Y if you intend to run the kernel on the Comdial MP1000 platform. + +config MP1000_90MHZ + bool "MP1000_90MHZ" + depends on MACH_MP1000 + help + Say Y if you have the MP1000 configured to be set at 90MHZ rather than 74MHZ + endmenu endif diff --git a/arch/arm/mach-clps711x/Makefile b/arch/arm/mach-clps711x/Makefile index 4a19731..8a6dc1c 100644 --- a/arch/arm/mach-clps711x/Makefile +++ b/arch/arm/mach-clps711x/Makefile @@ -15,6 +15,7 @@ obj-$(CONFIG_ARCH_CDB89712) += cdb89712.o obj-$(CONFIG_ARCH_CLEP7312) += clep7312.o obj-$(CONFIG_ARCH_EDB7211) += edb7211-arch.o edb7211-mm.o obj-$(CONFIG_ARCH_FORTUNET) += fortunet.o +obj-$(CONFIG_MACH_MP1000) += mp1000-mach.o mp1000-mm.o mp1000-seprom.o obj-$(CONFIG_ARCH_P720T) += p720t.o leds-$(CONFIG_ARCH_P720T) += p720t-leds.o obj-$(CONFIG_LEDS) += $(leds-y) diff --git a/arch/arm/mach-clps711x/mp1000-mach.c b/arch/arm/mach-clps711x/mp1000-mach.c new file mode 100644 index 0000000..c2816bc --- /dev/null +++ b/arch/arm/mach-clps711x/mp1000-mach.c @@ -0,0 +1,49 @@ +/* + * linux/arch/arm/mach-mp1000/mp1000.c + * + * Copyright (C) 2005 Comdial Corporation + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include <linux/init.h> +#include <linux/types.h> +#include <linux/string.h> + +#include <asm/setup.h> +#include <asm/mach-types.h> +#include <asm/mach/arch.h> +#include <asm/arch/mp1000-seprom.h> + +#include "common.h" + +extern void mp1000_map_io(void); + +static void __init mp1000_init(void) +{ + seprom_init(); +} + +MACHINE_START(MP1000, "Comdial MP1000") + /* Maintainer: Jon Ringle */ + .phys_ram = 0xc0000000, + .phys_io = 0x80000000, + .io_pg_offst = ((0xff000000) >> 18) & 0xfffc, + .boot_params = 0xc0015100, + .map_io = mp1000_map_io, + .init_irq = clps711x_init_irq, + .init_machine = mp1000_init, + .timer = &clps711x_timer, +MACHINE_END + diff --git a/arch/arm/mach-clps711x/mp1000-mm.c b/arch/arm/mach-clps711x/mp1000-mm.c new file mode 100644 index 0000000..20e810b --- /dev/null +++ b/arch/arm/mach-clps711x/mp1000-mm.c @@ -0,0 +1,47 @@ +/* + * linux/arch/arm/mach-mp1000/mm.c + * + * Extra MM routines for the MP1000 + * + * Copyright (C) 2005 Comdial Corporation + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/hardware.h> +#include <asm/page.h> +#include <asm/pgtable.h> +#include <asm/sizes.h> + +#include <asm/mach/map.h> + +extern void clps711x_map_io(void); + +static struct map_desc mp1000_io_desc[] __initdata = { + { MP1000_EIO_BASE, MP1000_EIO_START, MP1000_EIO_SIZE, MT_DEVICE }, + { MP1000_FIO_BASE, MP1000_FIO_START, MP1000_FIO_SIZE, MT_DEVICE }, + { MP1000_LIO_BASE, MP1000_LIO_START, MP1000_LIO_SIZE, MT_DEVICE }, + { MP1000_NIO_BASE, MP1000_NIO_START, MP1000_NIO_SIZE, MT_DEVICE }, + { MP1000_IDE_BASE, MP1000_IDE_START, MP1000_IDE_SIZE, MT_DEVICE }, + { MP1000_DSP_BASE, MP1000_DSP_START, MP1000_DSP_SIZE, MT_DEVICE } +}; + +void __init mp1000_map_io(void) +{ + clps711x_map_io(); + iotable_init(mp1000_io_desc, ARRAY_SIZE(mp1000_io_desc)); +} diff --git a/arch/arm/mach-clps711x/mp1000-seprom.c b/arch/arm/mach-clps711x/mp1000-seprom.c new file mode 100644 index 0000000..b22d0be --- /dev/null +++ b/arch/arm/mach-clps711x/mp1000-seprom.c @@ -0,0 +1,195 @@ +/*` + * mp1000-seprom.c + * + * This file contains the Serial EEPROM code for the MP1000 board + * + * Copyright (C) 2005 Comdial Corporation + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <asm/hardware.h> +#include <asm/hardware/clps7111.h> +#include <asm/arch/mp1000-seprom.h> + +/* If SepromInit() can initialize and checksum the seprom successfully, */ +/* then it will point seprom_data_ptr at the shadow copy. */ + +static eeprom_struct seprom_data; /* shadow copy of seprom content */ + +eeprom_struct *seprom_data_ptr = 0; /* 0 => not initialized */ + +/* + * Port D Bit 5 is Chip Select for EEPROM + * Port E Bit 0 is Input, Data out from EEPROM + * Port E Bit 1 is Output, Data in to EEPROM + * Port E Bit 2 is Output, CLK to EEPROM + */ + +static char *port_d_ptr = (char *)(CLPS7111_VIRT_BASE + PDDR); +static char *port_e_ptr = (char *)(CLPS7111_VIRT_BASE + PEDR); + +#define NO_OF_SHORTS 64 // Device is 64 x 16 bits +#define ENABLE_RW 0 +#define DISABLE_RW 1 + +static inline void toggle_seprom_clock(void) +{ + *port_e_ptr |= HwPortESepromCLK; + *port_e_ptr &= ~(HwPortESepromCLK); +} + +static inline void select_eeprom(void) +{ + *port_d_ptr |= HwPortDEECS; + *port_e_ptr &= ~(HwPortESepromCLK); +} + +static inline void deselect_eeprom(void) +{ + *port_d_ptr &= ~(HwPortDEECS); + *port_e_ptr &= ~(HwPortESepromDIn); +} + +/* + * GetSepromDataPtr - returns pointer to shadow (RAM) copy of seprom + * and returns 0 if seprom is not initialized or + * has a checksum error. + */ + +eeprom_struct* get_seprom_ptr(void) +{ + return seprom_data_ptr; +} + +unsigned char* get_eeprom_mac_address(void) +{ + return seprom_data_ptr->variant.eprom_struct.mac_Address; +} + +/* + * ReadSProm, Physically reads data from the Serial PROM + */ +static void read_sprom(short address, int length, eeprom_struct *buffer) +{ + short data = COMMAND_READ | (address & 0x3F); + short bit; + int i; + + select_eeprom(); + + // Clock in 9 bits of the command + for (i = 0, bit = 0x100; i < 9; i++, bit >>= 1) { + if (data & bit) + *port_e_ptr |= HwPortESepromDIn; + else + *port_e_ptr &= ~(HwPortESepromDIn); + + toggle_seprom_clock(); + } + + // + // Now read one or more shorts of data from the Seprom + // + while (length-- > 0) { + data = 0; + + // Read 16 bits at a time + for (i = 0; i < 16; i++) { + data <<= 1; + toggle_seprom_clock(); + data |= *port_e_ptr & HwPortESepromDOut; + + } + + buffer->variant.eprom_short_data[address++] = data; + } + + deselect_eeprom(); + + return; +} + + + +/* + * ReadSerialPROM + * + * Input: Pointer to array of 64 x 16 Bits + * + * Output: if no problem reading data is filled in + */ +static void read_serial_prom(eeprom_struct *data) +{ + read_sprom(0, 64, data); +} + + +// +// Compute Serial EEPROM checksum +// +// Input: Pointer to struct with Eprom data +// +// Output: The computed Eprom checksum +// +static short compute_seprom_checksum(eeprom_struct *data) +{ + short checksum = 0; + int i; + + for (i = 0; i < 126; i++) { + checksum += (short)data->variant.eprom_byte_data[i]; + } + + return((short)(0x5555 - (checksum & 0xFFFF))); +} + +// +// Make sure the data port bits for the SEPROM are correctly initialised +// + +void __init seprom_init(void) +{ + short checksum; + + // Init Port D + *(char *)(CLPS7111_VIRT_BASE + PDDDR) = 0x0; + *(char *)(CLPS7111_VIRT_BASE + PDDR) = 0x15; + + // Init Port E + *(int *)(CLPS7111_VIRT_BASE + PEDDR) = 0x06; + *(int *)(CLPS7111_VIRT_BASE + PEDR) = 0x04; + + // + // Make sure that EEPROM struct size never exceeds 128 bytes + // + if (sizeof(eeprom_struct) > 128) { + panic("Serial PROM struct size > 128, aborting read\n"); + } + + read_serial_prom(&seprom_data); + + checksum = compute_seprom_checksum(&seprom_data); + + if (checksum != seprom_data.variant.eprom_short_data[63]) { + panic("Serial EEPROM checksum failed\n"); + } + + seprom_data_ptr = &seprom_data; +} + |