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/*
* (C) Copyright 2008
* Texas Instruments, <www.ti.com>
*
* Author :
* Manikandan Pillai <mani.pillai@ti.com>
*
* Derived from Beagle Board and 3430 SDP code by
* Richard Woodruff <r-woodruff2@ti.com>
* Syed Mohammed Khasim <khasim@ti.com>
*
* 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/io.h>
#include <asm/arch/mem.h> /* get mem tables */
#include <asm/arch/sys_proto.h>
#include <i2c.h>
extern omap3_sysinfo sysinfo;
static gpmc_csx_t *gpmc_cs_base = (gpmc_csx_t *)GPMC_CONFIG_CS0_BASE;
static sdrc_t *sdrc_base = (sdrc_t *)OMAP34XX_SDRC_BASE;
static ctrl_t *ctrl_base = (ctrl_t *)OMAP34XX_CTRL_BASE;
/******************************************
* get_cpu_rev(void) - extract version info
******************************************/
u32 get_cpu_rev(void)
{
u32 cpuid = 0;
/*
* On ES1.0 the IDCODE register is not exposed on L4
* so using CPU ID to differentiate
* between ES2.0 and ES1.0.
*/
__asm__ __volatile__("mrc p15, 0, %0, c0, c0, 0":"=r"(cpuid));
if ((cpuid & 0xf) == 0x0)
return CPU_3430_ES1;
else
return CPU_3430_ES2;
}
/****************************************************
* is_mem_sdr() - return 1 if mem type in use is SDR
****************************************************/
u32 is_mem_sdr(void)
{
if (readl(&sdrc_base->cs[CS0].mr) == SDP_SDRC_MR_0_SDR)
return 1;
return 0;
}
/***********************************************************************
* get_cs0_size() - get size of chip select 0/1
************************************************************************/
u32 get_sdr_cs_size(u32 cs)
{
u32 size;
/* get ram size field */
size = readl(&sdrc_base->cs[cs].mcfg) >> 8;
size &= 0x3FF; /* remove unwanted bits */
size *= SZ_2M; /* find size in MB */
return size;
}
/***********************************************************************
* get_sdr_cs_offset() - get offset of cs from cs0 start
************************************************************************/
u32 get_sdr_cs_offset(u32 cs)
{
u32 offset;
if (!cs)
return 0;
offset = readl(&sdrc_base->cs_cfg);
offset = (offset & 15) << 27 | (offset & 0x30) >> 17;
return offset;
}
/***********************************************************************
* get_board_type() - get board type based on current production stats.
* - NOTE-1-: 2 I2C EEPROMs will someday be populated with proper info.
* when they are available we can get info from there. This should
* be correct of all known boards up until today.
* - NOTE-2- EEPROMs are populated but they are updated very slowly. To
* avoid waiting on them we will use ES version of the chip to get info.
* A later version of the FPGA migth solve their speed issue.
************************************************************************/
u32 get_board_type(void)
{
if (get_cpu_rev() == CPU_3430_ES2)
return sysinfo.board_type_v2;
else
return sysinfo.board_type_v1;
}
/***************************************************************************
* get_gpmc0_base() - Return current address hardware will be
* fetching from. The below effectively gives what is correct, its a bit
* mis-leading compared to the TRM. For the most general case the mask
* needs to be also taken into account this does work in practice.
* - for u-boot we currently map:
* -- 0 to nothing,
* -- 4 to flash
* -- 8 to enent
* -- c to wifi
****************************************************************************/
u32 get_gpmc0_base(void)
{
u32 b;
b = readl(&gpmc_cs_base->config7);
b &= 0x1F; /* keep base [5:0] */
b = b << 24; /* ret 0x0b000000 */
return b;
}
/*******************************************************************
* get_gpmc0_width() - See if bus is in x8 or x16 (mainly for nand)
*******************************************************************/
u32 get_gpmc0_width(void)
{
return WIDTH_16BIT;
}
/*************************************************************************
* get_board_rev() - setup to pass kernel board revision information
* returns:(bit[0-3] sub version, higher bit[7-4] is higher version)
*************************************************************************/
u32 get_board_rev(void)
{
return 0x20;
}
/*********************************************************************
* display_board_info() - print banner with board info.
*********************************************************************/
void display_board_info(u32 btype)
{
char *mem_s, *sec_s;
if (is_mem_sdr())
mem_s = "mSDR";
else
mem_s = "LPDDR";
switch (get_device_type()) {
case TST_DEVICE:
sec_s = "TST";
break;
case EMU_DEVICE:
sec_s = "EMU";
break;
case HS_DEVICE:
sec_s = "HS";
break;
case GP_DEVICE:
sec_s = "GP";
break;
default:
sec_s = "?";
}
printf("OMAP%s-%s rev %d, CPU-OPP2 L3-165MHz\n", sysinfo.cpu_string,
sec_s, get_cpu_rev());
printf("%s + %s/%s\n", sysinfo.board_string,
mem_s, sysinfo.nand_string);
}
/********************************************************
* get_base(); get upper addr of current execution
*******************************************************/
u32 get_base(void)
{
u32 val;
__asm__ __volatile__("mov %0, pc \n":"=r"(val)::"memory");
val &= 0xF0000000;
val >>= 28;
return val;
}
/********************************************************
* is_running_in_flash() - tell if currently running in
* FLASH.
*******************************************************/
u32 is_running_in_flash(void)
{
if (get_base() < 4)
return 1; /* in FLASH */
return 0; /* running in SRAM or SDRAM */
}
/********************************************************
* is_running_in_sram() - tell if currently running in
* SRAM.
*******************************************************/
u32 is_running_in_sram(void)
{
if (get_base() == 4)
return 1; /* in SRAM */
return 0; /* running in FLASH or SDRAM */
}
/********************************************************
* is_running_in_sdram() - tell if currently running in
* SDRAM.
*******************************************************/
u32 is_running_in_sdram(void)
{
if (get_base() > 4)
return 1; /* in SDRAM */
return 0; /* running in SRAM or FLASH */
}
/***************************************************************
* get_boot_type() - Is this an XIP type device or a stream one
* bits 4-0 specify type. Bit 5 says mem/perif
***************************************************************/
u32 get_boot_type(void)
{
return (readl(&ctrl_base->status) & SYSBOOT_MASK);
}
/*************************************************************
* get_device_type(): tell if GP/HS/EMU/TST
*************************************************************/
u32 get_device_type(void)
{
return ((readl(&ctrl_base->status) & (DEVICE_MASK)) >> 8);
}
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