+++ /dev/null
-/*
- * (C) Copyright 2004
- * Texas Instruments, <www.ti.com>
- * Richard Woodruff <r-woodruff2@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/arch/omap2420.h>
-#include <asm/io.h>
-#include <asm/arch/bits.h>
-#include <asm/arch/mem.h> /* get mem tables */
-#include <asm/arch/sys_proto.h>
-#include <asm/arch/sys_info.h>
-#include <i2c.h>
-
-/**************************************************************************
- * get_prod_id() - get id info from chips
- ***************************************************************************/
-static u32 get_prod_id(void)
-{
- u32 p;
- p = __raw_readl(PRODUCTION_ID); /* get production ID */
- return((p & CPU_242X_PID_MASK) >> 16);
-}
-
-/**************************************************************************
- * get_cpu_type() - low level get cpu type
- * - no C globals yet.
- * - just looking to say if this is a 2422 or 2420 or ...
- * - to start with we will look at switch settings..
- * - 2422 id's same as 2420 for ES1 will rely on H4 board characteristics
- * (mux for 2420, non-mux for 2422).
- ***************************************************************************/
-u32 get_cpu_type(void)
-{
- u32 v;
-
- switch(get_prod_id()){
- case 1:;/* 2420 */
- case 2: return(CPU_2420); break; /* 2420 pop */
- case 4: return(CPU_2422); break;
- case 8: return(CPU_2423); break;
- default: break; /* early 2420/2422's unmarked */
- }
-
- v = __raw_readl(TAP_IDCODE_REG);
- v &= CPU_24XX_ID_MASK;
- if (v == CPU_2420_CHIPID) { /* currently 2420 and 2422 have same id */
- if (is_gpmc_muxed() == GPMC_MUXED) /* if mux'ed */
- return(CPU_2420);
- else
- return(CPU_2422);
- } else
- return(CPU_2420); /* don't know, say 2420 */
-}
-
-/******************************************
- * get_cpu_rev(void) - extract version info
- ******************************************/
-u32 get_cpu_rev(void)
-{
- u32 v;
- v = __raw_readl(TAP_IDCODE_REG);
- v = v >> 28;
- return(v+1); /* currently 2422 and 2420 match up */
-}
-/****************************************************
- * is_mem_sdr() - return 1 if mem type in use is SDR
- ****************************************************/
-u32 is_mem_sdr(void)
-{
- volatile u32 *burst = (volatile u32 *)(SDRC_MR_0+SDRC_CS0_OSET);
- if(*burst == H4_2420_SDRC_MR_0_SDR)
- return(1);
- return(0);
-}
-
-/***********************************************************
- * get_mem_type() - identify type of mDDR part used.
- * 2422 uses stacked DDR, 2 parts CS0/CS1.
- * 2420 may have 1 or 2, no good way to know...only init 1...
- * when eeprom data is up we can select 1 more.
- *************************************************************/
-u32 get_mem_type(void)
-{
- u32 cpu, sdr = is_mem_sdr();
-
- cpu = get_cpu_type();
- if (cpu == CPU_2422 || cpu == CPU_2423)
- return(DDR_STACKED);
-
- if(get_prod_id() == 0x2)
- return(XDR_POP);
-
- if (get_board_type() == BOARD_H4_MENELAUS)
- if(sdr)
- return(SDR_DISCRETE);
- else
- return(DDR_COMBO);
- else
- if(sdr) /* SDP + SDR kit */
- return(SDR_DISCRETE);
- else
- return(DDR_DISCRETE); /* origional SDP */
-}
-
-/***********************************************************************
- * get_cs0_size() - get size of chip select 0/1
- ************************************************************************/
-u32 get_sdr_cs_size(u32 offset)
-{
- u32 size;
- size = __raw_readl(SDRC_MCFG_0+offset) >> 8; /* get ram size field */
- size &= 0x2FF; /* remove unwanted bits */
- size *= SZ_2M; /* find size in MB */
- return(size);
-}
-
-/***********************************************************************
- * get_board_type() - get board type based on current production stats.
- * --- NOTE: 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.
- ************************************************************************/
-u32 get_board_type(void)
-{
- if (i2c_probe(I2C_MENELAUS) == 0)
- return(BOARD_H4_MENELAUS);
- else
- return(BOARD_H4_SDP);
-}
-
-/******************************************************************
- * get_sysboot_value() - get init word settings (dip switch on h4)
- ******************************************************************/
-inline u32 get_sysboot_value(void)
-{
- return(0x00000FFF & __raw_readl(CONTROL_STATUS));
-}
-
-/***************************************************************************
- * 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 = __raw_readl(GPMC_CONFIG7_0);
- b &= 0x1F; /* keep base [5:0] */
- b = b << 24; /* ret 0x0b000000 */
- return(b);
-}
-
-/*****************************************************************
- * is_gpmc_muxed() - tells if address/data lines are multiplexed
- *****************************************************************/
-u32 is_gpmc_muxed(void)
-{
- u32 mux;
- mux = get_sysboot_value();
- if ((mux & (BIT0 | BIT1 | BIT2 | BIT3)) == (BIT0 | BIT2 | BIT3))
- return(GPMC_MUXED); /* NAND Boot mode */
- if (mux & BIT1) /* if mux'ed */
- return(GPMC_MUXED);
- else
- return(GPMC_NONMUXED);
-}
-
-/************************************************************************
- * get_gpmc0_type() - read sysboot lines to see type of memory attached
- ************************************************************************/
-u32 get_gpmc0_type(void)
-{
- u32 type;
- type = get_sysboot_value();
- if ((type & (BIT3|BIT2)) == (BIT3|BIT2))
- return(TYPE_NAND);
- else
- return(TYPE_NOR);
-}
-
-/*******************************************************************
- * get_gpmc0_width() - See if bus is in x8 or x16 (mainly for nand)
- *******************************************************************/
-u32 get_gpmc0_width(void)
-{
- u32 width;
- width = get_sysboot_value();
- if ((width & 0xF) == (BIT3|BIT2))
- return(WIDTH_8BIT);
- else
- return(WIDTH_16BIT);
-}
-
-/*********************************************************************
- * wait_on_value() - common routine to allow waiting for changes in
- * volatile regs.
- *********************************************************************/
-u32 wait_on_value(u32 read_bit_mask, u32 match_value, u32 read_addr, u32 bound)
-{
- u32 i = 0, val;
- do {
- ++i;
- val = __raw_readl(read_addr) & read_bit_mask;
- if (val == match_value)
- return(1);
- if (i==bound)
- return(0);
- } while (1);
-}
-
-/*********************************************************************
- * display_board_info() - print banner with board info.
- *********************************************************************/
-void display_board_info(u32 btype)
-{
- static const char cpu_2420 [] = "2420"; /* cpu type */
- static const char cpu_2422 [] = "2422";
- static const char cpu_2423 [] = "2423";
- static const char db_men [] = "Menelaus"; /* board type */
- static const char db_ip [] = "IP";
- static const char mem_sdr [] = "mSDR"; /* memory type */
- static const char mem_ddr [] = "mDDR";
- static const char t_tst [] = "TST"; /* security level */
- static const char t_emu [] = "EMU";
- static const char t_hs [] = "HS";
- static const char t_gp [] = "GP";
- static const char unk [] = "?";
-
- const char *cpu_s, *db_s, *mem_s, *sec_s;
- u32 cpu, rev, sec;
-
- rev = get_cpu_rev();
- cpu = get_cpu_type();
- sec = get_device_type();
-
- if(is_mem_sdr())
- mem_s = mem_sdr;
- else
- mem_s = mem_ddr;
-
- if(cpu == CPU_2423)
- cpu_s = cpu_2423;
- else if (cpu == CPU_2422)
- cpu_s = cpu_2422;
- else
- cpu_s = cpu_2420;
-
- if(btype == BOARD_H4_MENELAUS)
- db_s = db_men;
- else
- db_s = db_ip;
-
- switch(sec){
- case TST_DEVICE: sec_s = t_tst; break;
- case EMU_DEVICE: sec_s = t_emu; break;
- case HS_DEVICE: sec_s = t_hs; break;
- case GP_DEVICE: sec_s = t_gp; break;
- default: sec_s = unk;
- }
-
- printf("OMAP%s-%s revision %d\n", cpu_s, sec_s, rev-1);
- printf("TI H4 SDP Base Board + %s Daughter Board + %s \n", db_s, mem_s);
-}
-
-/*************************************************************************
- * get_board_rev() - setup to pass kernel board revision information
- * 0 = 242x IP platform (first 2xx boards)
- * 1 = 242x Menelaus platfrom.
- *************************************************************************/
-u32 get_board_rev(void)
-{
- u32 rev = 0;
- u32 btype = get_board_type();
-
- if (btype == BOARD_H4_MENELAUS){
- rev = 1;
- }
- return(rev);
-}
-
-/********************************************************
- * 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);
-}
-
-/********************************************************
- * get_base2(); get 2upper addr of current execution
- *******************************************************/
-u32 get_base2(void)
-{
- u32 val;
- __asm__ __volatile__("mov %0, pc \n" : "=r" (val) : : "memory");
- val &= 0xFF000000;
- val >>= 24;
- return(val);
-}
-
-/********************************************************
- * running_in_flash() - tell if currently running in
- * flash.
- *******************************************************/
-u32 running_in_flash(void)
-{
- if (get_base() < 4)
- return(1); /* in flash */
- return(0); /* running in SRAM or SDRAM */
-}
-
-/********************************************************
- * running_in_sram() - tell if currently running in
- * sram.
- *******************************************************/
-u32 running_in_sram(void)
-{
- if (get_base() == 4)
- return(1); /* in SRAM */
- return(0); /* running in FLASH or SDRAM */
-}
-/********************************************************
- * running_in_sdram() - tell if currently running in
- * flash.
- *******************************************************/
-u32 running_in_sdram(void)
-{
- if (get_base() > 4)
- return(1); /* in sdram */
- return(0); /* running in SRAM or FLASH */
-}
-
-/*************************************************************
- * running_from_internal_boot() - am I a signed NOR image.
- *************************************************************/
-u32 running_from_internal_boot(void)
-{
- u32 v, base;
-
- v = get_sysboot_value() & BIT3;
- base = get_base2();
- /* if running at mask rom flash address and
- * sysboot3 says this was an internal boot
- */
- if ((base == 0x08) && v)
- return(1);
- else
- return(0);
-}
-
-/*************************************************************
- * get_device_type(): tell if GP/HS/EMU/TST
- *************************************************************/
-u32 get_device_type(void)
-{
- int mode;
- mode = __raw_readl(CONTROL_STATUS) & (BIT10|BIT9|BIT8);
- return(mode >>= 8);
-}
projects / karo-tx-uboot.git / blobdiff