diff options
Diffstat (limited to 'board/logicpd/zoom2/zoom2.c')
| -rw-r--r-- | board/logicpd/zoom2/zoom2.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/board/logicpd/zoom2/zoom2.c b/board/logicpd/zoom2/zoom2.c new file mode 100644 index 0000000..d9e2ae5 --- /dev/null +++ b/board/logicpd/zoom2/zoom2.c @@ -0,0 +1,182 @@ +/* + * Copyright (c) 2009 Wind River Systems, Inc. + * Tom Rix <Tom.Rix@windriver.com> + * + * Derived from Zoom1 code by + * Nishanth Menon <nm@ti.com> + * Sunil Kumar <sunilsaini05@gmail.com> + * Shashi Ranjan <shashiranjanmca05@gmail.com> + * Richard Woodruff <r-woodruff2@ti.com> + * Syed Mohammed Khasim <khasim@ti.com> + * + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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 <common.h> +#ifdef CONFIG_STATUS_LED +#include <status_led.h> +#endif +#include <twl4030.h> +#include <asm/io.h> +#include <asm/arch/gpio.h> +#include <asm/arch/mem.h> +#include <asm/arch/mux.h> +#include <asm/arch/sys_proto.h> +#include <asm/mach-types.h> +#include "zoom2.h" +#include "zoom2_serial.h" + +/* + * This the the zoom2, board specific, gpmc configuration for the + * quad uart on the debug board. The more general gpmc configurations + * are setup at the cpu level in cpu/arm_cortexa8/omap3/mem.c + * + * The details of the setting of the serial gpmc setup are not available. + * The values were provided by another party. + */ +void enable_gpmc_cs_config(u32 *gpmc_config, struct gpmc_cs *cs, u32 base, + u32 size); + +static u32 gpmc_serial_TL16CP754C[GPMC_MAX_REG] = { + 0x00011000, + 0x001F1F01, + 0x00080803, + 0x1D091D09, + 0x041D1F1F, + 0x1D0904C4, 0 +}; + +/* Used to track the revision of the board */ +static zoom2_revision revision = ZOOM2_REVISION_UNKNOWN; + +/* + * Routine: zoom2_get_revision + * Description: Return the revision of the Zoom2 this code is running on. + */ +zoom2_revision zoom2_get_revision(void) +{ + return revision; +} + +/* + * Routine: zoom2_identify + * Description: Detect which version of Zoom2 we are running on. + */ +void zoom2_identify(void) +{ + /* + * To check for production board vs beta board, + * check if gpio 94 is clear. + * + * No way yet to check for alpha board identity. + * Alpha boards were produced in very limited quantities + * and they are not commonly used. They are mentioned here + * only for completeness. + */ + if (!omap_request_gpio(94)) { + unsigned int val; + + omap_set_gpio_direction(94, 1); + val = omap_get_gpio_datain(94); + omap_free_gpio(94); + + if (val) + revision = ZOOM2_REVISION_BETA; + else + revision = ZOOM2_REVISION_PRODUCTION; + } + + printf("Board revision "); + switch (revision) { + case ZOOM2_REVISION_PRODUCTION: + printf("Production\n"); + break; + case ZOOM2_REVISION_BETA: + printf("Beta\n"); + break; + default: + printf("Unknown\n"); + break; + } +} + +/* + * Routine: board_init + * Description: Early hardware init. + */ +int board_init (void) +{ + DECLARE_GLOBAL_DATA_PTR; + u32 *gpmc_config; + + gpmc_init (); /* in SRAM or SDRAM, finish GPMC */ + + /* Configure console support on zoom2 */ + gpmc_config = gpmc_serial_TL16CP754C; + enable_gpmc_cs_config(gpmc_config, &gpmc_cfg->cs[4], + SERIAL_TL16CP754C_BASE, GPMC_SIZE_16M); + + /* board id for Linux */ + gd->bd->bi_arch_number = MACH_TYPE_OMAP_ZOOM2; + /* boot param addr */ + gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100); + +#if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT) + status_led_set (STATUS_LED_BOOT, STATUS_LED_ON); +#endif + return 0; +} + +/* + * Routine: misc_init_r + * Description: Configure zoom board specific configurations + */ +int misc_init_r(void) +{ + zoom2_identify(); + twl4030_power_init(); + twl4030_led_init(); + dieid_num_r(); + + /* + * Board Reset + * The board is reset by holding the the large button + * on the top right side of the main board for + * eight seconds. + * + * There are reported problems of some beta boards + * continously resetting. For those boards, disable resetting. + */ + if (ZOOM2_REVISION_PRODUCTION <= zoom2_get_revision()) + twl4030_power_reset_init(); + + return 0; +} + +/* + * Routine: set_muxconf_regs + * Description: Setting up the configuration Mux registers specific to the + * hardware. Many pins need to be moved from protect to primary + * mode. + */ +void set_muxconf_regs (void) +{ + /* platform specific muxes */ + MUX_ZOOM2 (); +} |