upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
396 lines
11 KiB
396 lines
11 KiB
/*
|
|
* (C) Copyright 2005-2007
|
|
* Samsung Electronics,
|
|
* Kyungmin Park <kyungmin.park@samsung.com>
|
|
*
|
|
* Derived from omap2420
|
|
*
|
|
* 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;
|
|
/* currently 2420 and 2422 have same id */
|
|
if (v == CPU_2420_CHIPID) {
|
|
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)
|
|
{
|
|
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)
|
|
{
|
|
char cpu_2420[] = "2420"; /* cpu type */
|
|
char cpu_2422[] = "2422";
|
|
char cpu_2423[] = "2423";
|
|
char mem_sdr[] = "mSDR"; /* memory type */
|
|
char mem_ddr[] = "mDDR";
|
|
char t_tst[] = "TST"; /* security level */
|
|
char t_emu[] = "EMU";
|
|
char t_hs[] = "HS";
|
|
char t_gp[] = "GP";
|
|
char unk[] = "?";
|
|
|
|
char *cpu_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;
|
|
|
|
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("Samsung Apollon SDP Base Board + %s \n", 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);
|
|
}
|
|
|