Add common board, interrupt and system info code. Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
255 lines
7.3 KiB
C
255 lines
7.3 KiB
C
/*
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* (C) Copyright 2008
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* Texas Instruments, <www.ti.com>
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*
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* Author :
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* Manikandan Pillai <mani.pillai@ti.com>
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*
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* Derived from Beagle Board and 3430 SDP code by
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* Richard Woodruff <r-woodruff2@ti.com>
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* Syed Mohammed Khasim <khasim@ti.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR /PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch/mem.h> /* get mem tables */
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#include <asm/arch/sys_proto.h>
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#include <i2c.h>
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extern omap3_sysinfo sysinfo;
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static gpmc_csx_t *gpmc_cs_base = (gpmc_csx_t *)GPMC_CONFIG_CS0_BASE;
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static sdrc_t *sdrc_base = (sdrc_t *)OMAP34XX_SDRC_BASE;
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static ctrl_t *ctrl_base = (ctrl_t *)OMAP34XX_CTRL_BASE;
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/******************************************
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* get_cpu_rev(void) - extract version info
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******************************************/
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u32 get_cpu_rev(void)
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{
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u32 cpuid = 0;
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/*
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* On ES1.0 the IDCODE register is not exposed on L4
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* so using CPU ID to differentiate
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* between ES2.0 and ES1.0.
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*/
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__asm__ __volatile__("mrc p15, 0, %0, c0, c0, 0":"=r"(cpuid));
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if ((cpuid & 0xf) == 0x0)
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return CPU_3430_ES1;
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else
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return CPU_3430_ES2;
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}
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/****************************************************
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* is_mem_sdr() - return 1 if mem type in use is SDR
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****************************************************/
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u32 is_mem_sdr(void)
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{
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if (readl(&sdrc_base->cs[CS0].mr) == SDP_SDRC_MR_0_SDR)
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return 1;
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return 0;
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}
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/***********************************************************************
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* get_cs0_size() - get size of chip select 0/1
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************************************************************************/
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u32 get_sdr_cs_size(u32 cs)
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{
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u32 size;
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/* get ram size field */
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size = readl(&sdrc_base->cs[cs].mcfg) >> 8;
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size &= 0x3FF; /* remove unwanted bits */
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size *= SZ_2M; /* find size in MB */
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return size;
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}
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/***********************************************************************
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* get_sdr_cs_offset() - get offset of cs from cs0 start
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************************************************************************/
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u32 get_sdr_cs_offset(u32 cs)
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{
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u32 offset;
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if (!cs)
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return 0;
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offset = readl(&sdrc_base->cs_cfg);
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offset = (offset & 15) << 27 | (offset & 0x30) >> 17;
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return offset;
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}
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/***********************************************************************
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* get_board_type() - get board type based on current production stats.
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* - NOTE-1-: 2 I2C EEPROMs will someday be populated with proper info.
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* when they are available we can get info from there. This should
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* be correct of all known boards up until today.
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* - NOTE-2- EEPROMs are populated but they are updated very slowly. To
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* avoid waiting on them we will use ES version of the chip to get info.
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* A later version of the FPGA migth solve their speed issue.
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************************************************************************/
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u32 get_board_type(void)
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{
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if (get_cpu_rev() == CPU_3430_ES2)
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return sysinfo.board_type_v2;
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else
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return sysinfo.board_type_v1;
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}
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/***************************************************************************
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* get_gpmc0_base() - Return current address hardware will be
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* fetching from. The below effectively gives what is correct, its a bit
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* mis-leading compared to the TRM. For the most general case the mask
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* needs to be also taken into account this does work in practice.
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* - for u-boot we currently map:
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* -- 0 to nothing,
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* -- 4 to flash
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* -- 8 to enent
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* -- c to wifi
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****************************************************************************/
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u32 get_gpmc0_base(void)
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{
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u32 b;
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b = readl(&gpmc_cs_base->config7);
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b &= 0x1F; /* keep base [5:0] */
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b = b << 24; /* ret 0x0b000000 */
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return b;
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}
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/*******************************************************************
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* get_gpmc0_width() - See if bus is in x8 or x16 (mainly for nand)
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*******************************************************************/
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u32 get_gpmc0_width(void)
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{
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return WIDTH_16BIT;
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}
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/*************************************************************************
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* get_board_rev() - setup to pass kernel board revision information
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* returns:(bit[0-3] sub version, higher bit[7-4] is higher version)
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*************************************************************************/
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u32 get_board_rev(void)
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{
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return 0x20;
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}
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/*********************************************************************
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* display_board_info() - print banner with board info.
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*********************************************************************/
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void display_board_info(u32 btype)
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{
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char *mem_s, *sec_s;
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if (is_mem_sdr())
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mem_s = "mSDR";
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else
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mem_s = "LPDDR";
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switch (get_device_type()) {
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case TST_DEVICE:
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sec_s = "TST";
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break;
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case EMU_DEVICE:
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sec_s = "EMU";
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break;
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case HS_DEVICE:
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sec_s = "HS";
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break;
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case GP_DEVICE:
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sec_s = "GP";
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break;
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default:
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sec_s = "?";
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}
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printf("OMAP%s-%s rev %d, CPU-OPP2 L3-165MHz\n", sysinfo.cpu_string,
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sec_s, get_cpu_rev());
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printf("%s + %s/%s\n", sysinfo.board_string,
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mem_s, sysinfo.nand_string);
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}
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/********************************************************
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* get_base(); get upper addr of current execution
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*******************************************************/
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u32 get_base(void)
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{
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u32 val;
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__asm__ __volatile__("mov %0, pc \n":"=r"(val)::"memory");
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val &= 0xF0000000;
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val >>= 28;
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return val;
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}
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/********************************************************
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* is_running_in_flash() - tell if currently running in
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* FLASH.
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*******************************************************/
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u32 is_running_in_flash(void)
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{
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if (get_base() < 4)
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return 1; /* in FLASH */
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return 0; /* running in SRAM or SDRAM */
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}
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/********************************************************
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* is_running_in_sram() - tell if currently running in
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* SRAM.
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*******************************************************/
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u32 is_running_in_sram(void)
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{
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if (get_base() == 4)
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return 1; /* in SRAM */
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return 0; /* running in FLASH or SDRAM */
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}
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/********************************************************
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* is_running_in_sdram() - tell if currently running in
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* SDRAM.
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*******************************************************/
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u32 is_running_in_sdram(void)
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{
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if (get_base() > 4)
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return 1; /* in SDRAM */
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return 0; /* running in SRAM or FLASH */
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}
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/***************************************************************
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* get_boot_type() - Is this an XIP type device or a stream one
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* bits 4-0 specify type. Bit 5 says mem/perif
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***************************************************************/
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u32 get_boot_type(void)
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{
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return (readl(&ctrl_base->status) & SYSBOOT_MASK);
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}
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/*************************************************************
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* get_device_type(): tell if GP/HS/EMU/TST
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*************************************************************/
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u32 get_device_type(void)
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{
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return ((readl(&ctrl_base->status) & (DEVICE_MASK)) >> 8);
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}
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