diff options
author | Wolfgang Denk <wd@denx.de> | 2008-01-09 11:30:15 +0100 |
---|---|---|
committer | Wolfgang Denk <wd@denx.de> | 2008-01-09 11:30:15 +0100 |
commit | 2eb6e01049886bdaadf11243e7c8cf674c34ed0b (patch) | |
tree | 01df3c1af8b933b6b313c21c258e637a990f835b /board/apollon/sys_info.c | |
parent | d2ba6bd8f431c51d8b381791091c133b1e6f8d02 (diff) | |
parent | 4985ca5af3767ffe13ea96e1dc26f88c81084414 (diff) | |
download | u-boot-imx-2eb6e01049886bdaadf11243e7c8cf674c34ed0b.zip u-boot-imx-2eb6e01049886bdaadf11243e7c8cf674c34ed0b.tar.gz u-boot-imx-2eb6e01049886bdaadf11243e7c8cf674c34ed0b.tar.bz2 |
Merge branch 'master' of git://www.denx.de/git/u-boot-arm
Diffstat (limited to 'board/apollon/sys_info.c')
-rw-r--r-- | board/apollon/sys_info.c | 403 |
1 files changed, 403 insertions, 0 deletions
diff --git a/board/apollon/sys_info.c b/board/apollon/sys_info.c new file mode 100644 index 0000000..26ac9a2 --- /dev/null +++ b/board/apollon/sys_info.c @@ -0,0 +1,403 @@ +/* + * (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 db_men[] = "Menelaus"; /* board type */ + char db_ip[] = "IP"; + 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, *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("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); +} |