diff options
author | Wolfgang Denk <wd@denx.de> | 2011-11-16 20:24:41 +0100 |
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committer | Wolfgang Denk <wd@denx.de> | 2011-11-16 20:24:41 +0100 |
commit | 0c2dd9a05bdcf3b2b4880509ec690116873fe158 (patch) | |
tree | 3deccd6143aa75c52096154f8f165feacb57fe56 /arch/arm/cpu/armv7/omap-common/hwinit-common.c | |
parent | 3844d1c782f9f3a5c72ccdbd4fa141f9c03d1121 (diff) | |
parent | 75acc4d7c1c9081e06d1197c6da01361cf1bce92 (diff) |
Merge branch 'master' of git://git.denx.de/u-boot-arm
* 'master' of git://git.denx.de/u-boot-arm:
arm, davinci: add DAVINCI_MMC_CLKID
arm, davinci_emac: fix driver bug if more then 3 PHYs are detected
arm, davinci: da850/dm365 lowlevel cleanup
omap5: Add omap5_evm board build support.
omap4/5: Add support for booting with CH.
omap5: emif: Add emif/ddr configurations required for omap5 evm
omap5: clocks: Add clocks support for omap5 platform.
omap5: Add minimal support for omap5430.
omap: Checkpatch fixes
omap4: make omap4 code common for future reuse
GCC4.6: Squash warnings in onenand_base.c
GCC4.6: Fix common/usb.c on xscale
OneNAND: Add simple OneNAND SPL
PXA: vpac270: Enable the new generic MMC driver
PXA: Cleanup serial_pxa
PXA: Drop csb226 and innokom boards (unmaintained)
m28evk: Fix comment about the number of RAM banks
mx31: Fix checkpatch warnings in generic.c
mx31: Use proper IO accessor for GPR register
mx31: Remove duplicate definition for GPR register
qong: Use generic function for configuring GPR register
M28EVK: Enable USB HOST support
iMX28: Add USB HOST driver
iMX28: Add USB and USB PHY register definitions
M28: Add memory detection into SPL
iMX28: Fix ARM vector handling
M28: Add doc/README.m28 documentation
M28: Add MMC SPL
iMX28: Add support for DENX M28EVK board
iMX28: Add u-boot.sb target to Makefile
iMX28: Add image header generator tool
iMX28: Add driver for internal RTC
iMX28: Add GPMI NAND driver
iMX28: Add APBH DMA driver
iMX28: Add SPI driver
iMX28: Add GPIO control
iMX28: Add I2C bus driver
iMX28: Add PINMUX control
FEC: Add support for iMX28 quirks
iMX28: Add SSP MMC driver
iMX28: Initial support for iMX28 CPU
MX25: zmx25: GCC4.6 fix build warnings
da850: add new config file for AM18xx
BeagleBoard: config: Switch to ttyO2
OMAP3: Change omap3_evm maintainer
devkit8000: Fix NAND SPL on boards with 256MB NAND
integrator: enable Vpp and disable flash protection
integrator: add system controller header
integrator: make flash writeable on boot
integrator: use io-accessors for board init
integrator: move text offset to config
integrator: pass configs for core modules
ARM: remove superfluous setting of arch_number in board specific code.
SPL: Allow ARM926EJS to avoid compiling in the CPU support code
integrator: do not test first part of the memory
arm: a320: fix broken timer
ARM: define CONFIG_MACH_TYPE for all ronetix boards
dm646x: pass board revision info to kernel
dm646x: add new configuration for dm6467T
arm, davinci: Fix setting of the SDRAM configuration register
arm, davinci: Remove the duplication of LPSC functions
arm, davinci: Rename AM1808 lowlevel functions to DA850
da8xxevm: fix build error
ARM: re-add MACH_TYPE_XXXXXX for VCMA9 board and add CONFIG_MACH_TYPE
Diffstat (limited to 'arch/arm/cpu/armv7/omap-common/hwinit-common.c')
-rw-r--r-- | arch/arm/cpu/armv7/omap-common/hwinit-common.c | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/hwinit-common.c b/arch/arm/cpu/armv7/omap-common/hwinit-common.c new file mode 100644 index 0000000000..f65705db12 --- /dev/null +++ b/arch/arm/cpu/armv7/omap-common/hwinit-common.c @@ -0,0 +1,267 @@ +/* + * + * Common functions for OMAP4/5 based boards + * + * (C) Copyright 2010 + * Texas Instruments, <www.ti.com> + * + * Author : + * Aneesh V <aneesh@ti.com> + * Steve Sakoman <steve@sakoman.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> +#include <asm/arch/sys_proto.h> +#include <asm/sizes.h> +#include <asm/emif.h> +#include <asm/omap_common.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* + * This is used to verify if the configuration header + * was executed by rom code prior to control of transfer + * to the bootloader. SPL is responsible for saving and + * passing the boot_params pointer to the u-boot. + */ +struct omap_boot_parameters boot_params __attribute__ ((section(".data"))); + +#ifdef CONFIG_SPL_BUILD +/* + * We use static variables because global data is not ready yet. + * Initialized data is available in SPL right from the beginning. + * We would not typically need to save these parameters in regular + * U-Boot. This is needed only in SPL at the moment. + */ +u32 omap_bootmode = MMCSD_MODE_FAT; + +u32 omap_boot_device(void) +{ + return (u32) (boot_params.omap_bootdevice); +} + +u32 omap_boot_mode(void) +{ + return omap_bootmode; +} +#endif + +void do_set_mux(u32 base, struct pad_conf_entry const *array, int size) +{ + int i; + struct pad_conf_entry *pad = (struct pad_conf_entry *) array; + + for (i = 0; i < size; i++, pad++) + writew(pad->val, base + pad->offset); +} + +static void set_mux_conf_regs(void) +{ + switch (omap_hw_init_context()) { + case OMAP_INIT_CONTEXT_SPL: + set_muxconf_regs_essential(); + break; + case OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL: +#ifdef CONFIG_SYS_ENABLE_PADS_ALL + set_muxconf_regs_non_essential(); +#endif + break; + case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR: + case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH: + set_muxconf_regs_essential(); +#ifdef CONFIG_SYS_ENABLE_PADS_ALL + set_muxconf_regs_non_essential(); +#endif + break; + } +} + +u32 cortex_rev(void) +{ + + unsigned int rev; + + /* Read Main ID Register (MIDR) */ + asm ("mrc p15, 0, %0, c0, c0, 0" : "=r" (rev)); + + return rev; +} + +void omap_rev_string(char *omap_rev_string) +{ + u32 omap_rev = omap_revision(); + u32 omap_variant = (omap_rev & 0xFFFF0000) >> 16; + u32 major_rev = (omap_rev & 0x00000F00) >> 8; + u32 minor_rev = (omap_rev & 0x000000F0) >> 4; + + sprintf(omap_rev_string, "OMAP%x ES%x.%x", omap_variant, major_rev, + minor_rev); +} + +#ifdef CONFIG_SPL_BUILD +static void init_boot_params(void) +{ + boot_params_ptr = (u32 *) &boot_params; +} +#endif + +/* + * Routine: s_init + * Description: Does early system init of watchdog, muxing, andclocks + * Watchdog disable is done always. For the rest what gets done + * depends on the boot mode in which this function is executed + * 1. s_init of SPL running from SRAM + * 2. s_init of U-Boot running from FLASH + * 3. s_init of U-Boot loaded to SDRAM by SPL + * 4. s_init of U-Boot loaded to SDRAM by ROM code using the + * Configuration Header feature + * Please have a look at the respective functions to see what gets + * done in each of these cases + * This function is called with SRAM stack. + */ +void s_init(void) +{ + init_omap_revision(); + watchdog_init(); + set_mux_conf_regs(); +#ifdef CONFIG_SPL_BUILD + setup_clocks_for_console(); + preloader_console_init(); + do_io_settings(); +#endif + prcm_init(); +#ifdef CONFIG_SPL_BUILD + /* For regular u-boot sdram_init() is called from dram_init() */ + sdram_init(); + init_boot_params(); +#endif +} + +/* + * Routine: wait_for_command_complete + * Description: Wait for posting to finish on watchdog + */ +void wait_for_command_complete(struct watchdog *wd_base) +{ + int pending = 1; + do { + pending = readl(&wd_base->wwps); + } while (pending); +} + +/* + * Routine: watchdog_init + * Description: Shut down watch dogs + */ +void watchdog_init(void) +{ + struct watchdog *wd2_base = (struct watchdog *)WDT2_BASE; + + writel(WD_UNLOCK1, &wd2_base->wspr); + wait_for_command_complete(wd2_base); + writel(WD_UNLOCK2, &wd2_base->wspr); +} + + +/* + * This function finds the SDRAM size available in the system + * based on DMM section configurations + * This is needed because the size of memory installed may be + * different on different versions of the board + */ +u32 omap_sdram_size(void) +{ + u32 section, i, total_size = 0, size, addr; + + for (i = 0; i < 4; i++) { + section = __raw_readl(DMM_BASE + i*4); + addr = section & EMIF_SYS_ADDR_MASK; + /* See if the address is valid */ + if ((addr >= DRAM_ADDR_SPACE_START) && + (addr < DRAM_ADDR_SPACE_END)) { + size = ((section & EMIF_SYS_SIZE_MASK) >> + EMIF_SYS_SIZE_SHIFT); + size = 1 << size; + size *= SZ_16M; + total_size += size; + } + } + + return total_size; +} + + +/* + * Routine: dram_init + * Description: sets uboots idea of sdram size + */ +int dram_init(void) +{ + sdram_init(); + gd->ram_size = omap_sdram_size(); + return 0; +} + +/* + * Print board information + */ +int checkboard(void) +{ + puts(sysinfo.board_string); + return 0; +} + +/* +* This function is called by start_armboot. You can reliably use static +* data. Any boot-time function that require static data should be +* called from here +*/ +int arch_cpu_init(void) +{ + return 0; +} + +/* + * get_device_type(): tell if GP/HS/EMU/TST + */ +u32 get_device_type(void) +{ + return 0; +} + +/* + * Print CPU information + */ +int print_cpuinfo(void) +{ + char rev_string_buffer[50]; + + omap_rev_string(rev_string_buffer); + printf("CPU : %s\n", rev_string_buffer); + + return 0; +} +#ifndef CONFIG_SYS_DCACHE_OFF +void enable_caches(void) +{ + /* Enable D-cache. I-cache is already enabled in start.S */ + dcache_enable(); +} +#endif |