How to porting U-Boot to MPC852T
Rober Hsu
rober at opnet.com.tw
Tue Jul 5 17:16:38 EST 2005
Hello:
I can run ppcboot 1.1.6 at my MPC852T very well,
but when i change to 1.2.0 or above, it has many trouble
to me.I found 1.1.6 can work at 100MHZ, but else fail.
Somebody know how to use u-boot or ppcboot 1.2.0 at MPC852T at 100MHZ
and Enable Fast Ethernet, i just can run at ppcboot 1.1.6, else
fail.I've try all version from ppcboot 1.2.0 to u-boot 1.2.0.I think i
can run 852T at 100Mhz and enable fast ethernet,so my hardware is no
problem.But ppcboot 1.2.0 change too much source code, it makse me very
confuse,i don't know how to quickly debug it.
#Running at 50MHz is stable than 100MHZ but fec is stil not work
PPCBoot 1.2.0 (Jul 5 2005 - 10:04:03)
CPU: MPC852T (0x08010004) at 50 MHz: 4 kB I-Cache 4 kB D-Cache FEC
present
DRAM: 16 MB
Not load linux now? (enter anykey):
FLASH: 8 MB
In: serial
Out: serial
Err: serial
Type "run flash_nfs" to mount root filesystem over NFS
=>
=> tftp 0 ppcboot.bin
NIP: 00000000 XER: A0000000 LR: 00FE3F0C REGS: 00fafb48 TRAP: 1000 DAR:
A0000000
MSR: 00009002 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 00
GPR00: 00000000 00FAFC38 00000000 FFFFFFFF 00FAFDD1 00000075 00FAFEC0
00000000
GPR08: 00FF9818 FFFFFFFF 00FF7DA0 00001E00 59005035 00000000 00FF8B00
C0FD0000
GPR16: 00000000 00000000 00000000 00000000 39000004 00000001 FFFFFFFC
00001000
GPR24: 00000001 00000000 00FAFFC4 00000003 00000003 00FAFF94 00FF90F0
00FF7F70
Call backtrace:
00000160 00FE1744 00FEC8C4 00FEC64C 00FE48DC 00FE40D4 00FE15CC
00FD23B0 30343A30
Software Emulation Exception
#100MHZ halt at System init
PPCBoot 1.2.0 (Jul 5 2005 - 15:00:32)
CPU: MPC852T (0x08010004) at 100 MHz: 4 kB I-Cache 4 kB D-Cache FEC
present
DRAM: 16 MB <--- System Halt at here
/*
* (C) Copyright 2000, 2001, 2002
* Wolfgang Denk, DENX Software Engineering, wd at denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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
*/
/*
* board/config.h - configuration options, board specific
*/
#ifndef __CONFIG_H
#define __CONFIG_H
/*
* High Level Configuration Options
* (easy to change)
*/
#define CONFIG_8xx_GCLK_FREQ 100000000
#define CONFIG_MPC860 1 /* This is a MPC860 CPU */
#define CONFIG_TQM860L 1 /* ...on a TQM8xxL module */
#define CONFIG_8xx_CONS_SMC1 1 /* Console is on SMC1 */
#undef CONFIG_8xx_CONS_SMC2
#undef CONFIG_8xx_CONS_NONE
#define CONFIG_BAUDRATE 115200 /* console baudrate = 115kbps */
#define CONFIG_BOOTDELAY -1 /* autoboot after 5 seconds */
#define CONFIG_CLOCKS_IN_MHZ 1 /* clocks passsed to Linux in MHz */
#define CONFIG_BOARD_TYPES 1 /* support board types */
#define CONFIG_PREBOOT "echo;" \
"echo Type \"run flash_nfs\" to mount root filesystem over NFS;" \
"echo"
#undef CONFIG_BOOTARGS
#define CONFIG_BOOTCOMMAND \
"bootp; " \
"setenv bootargs root=/dev/nfs rw nfsroot=$(serverip):$(rootpath) " \
"ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask):$(hostname)::off; "
\
"bootm"
#define CONFIG_EXTRA_ENV_SETTINGS \
"ethaddr=00:01:02:B4:36:56\0" \
""
#define CONFIG_LOADS_ECHO 1 /* echo on for serial download */
#undef CFG_LOADS_BAUD_CHANGE /* don't allow baudrate change */
#undef CONFIG_WATCHDOG /* watchdog disabled */
#define CONFIG_STATUS_LED 1 /* Status LED enabled */
#undef CONFIG_CAN_DRIVER /* CAN Driver support disabled */
#define CONFIG_BOOTP_MASK (CONFIG_BOOTP_DEFAULT |
CONFIG_BOOTP_BOOTFILESIZE)
#define CONFIG_MAC_PARTITION
#define CONFIG_DOS_PARTITION
#define CONFIG_RTC_MPC8xx /* use internal RTC of MPC8xx */
#define CONFIG_COMMANDS ( CONFIG_CMD_DFL | \
CFG_CMD_ASKENV | \
CFG_CMD_DHCP | \
CFG_CMD_IDE | \
CFG_CMD_DATE )
/* this must be included AFTER the definition of CONFIG_COMMANDS (if
any) */
#include <cmd_confdefs.h>
/*
* Miscellaneous configurable options
*/
#define CFG_LONGHELP /* undef to save memory */
#define CFG_PROMPT "=> " /* Monitor Command Prompt */
#if 0
#define CFG_HUSH_PARSER 1 /* use "hush" command parser */
#endif
#ifdef CFG_HUSH_PARSER
#define CFG_PROMPT_HUSH_PS2 "> "
#endif
#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
#define CFG_CBSIZE 1024 /* Console I/O Buffer Size */
#else
#define CFG_CBSIZE 256 /* Console I/O Buffer Size */
#endif
#define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer
Size */
#define CFG_MAXARGS 16 /* max number of command args */
#define CFG_BARGSIZE CFG_CBSIZE /* Boot Argument Buffer Size */
#define CFG_MEMTEST_START 0x0400000 /* memtest works on */
#define CFG_MEMTEST_END 0x0C00000 /* 4 ... 12 MB in DRAM */
#define CFG_LOAD_ADDR 0x100000 /* default load address */
#define CFG_HZ 1000 /* decrementer freq: 1 ms ticks */
#define CFG_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
/*
* Low Level Configuration Settings
* (address mappings, register initial values, etc.)
* You should know what you are doing if you make changes here.
*/
/*-----------------------------------------------------------------------
* Internal Memory Mapped Register
*/
#define CFG_IMMR 0xFFF00000
/*-----------------------------------------------------------------------
* Definitions for initial stack pointer and data area (in DPRAM)
*/
#define CFG_INIT_RAM_ADDR CFG_IMMR
#define CFG_INIT_RAM_END 0x2F00 /* End of used area in DPRAM */
#define CFG_GBL_DATA_SIZE 64 /* size in bytes reserved for initial data
*/
#define CFG_GBL_DATA_OFFSET (CFG_INIT_RAM_END - CFG_GBL_DATA_SIZE)
#define CFG_INIT_SP_OFFSET CFG_GBL_DATA_OFFSET
/*-----------------------------------------------------------------------
* Start addresses for the final memory configuration
* (Set up by the startup code)
* Please note that CFG_SDRAM_BASE _must_ start at 0
*/
#define CFG_SDRAM_BASE 0x00000000
#define CFG_FLASH_BASE 0x40000000
#if defined(DEBUG)
#define CFG_MONITOR_LEN (256 << 10) /* Reserve 256 kB for Monitor */
#else
#define CFG_MONITOR_LEN (192 << 10) /* Reserve 192 kB for Monitor */
#endif
#define CFG_MONITOR_BASE CFG_FLASH_BASE
#define CFG_MALLOC_LEN (128 << 10) /* Reserve 128 kB for malloc() */
/*
* For booting Linux, the board info and command line data
* have to be in the first 8 MB of memory, since this is
* the maximum mapped by the Linux kernel during initialization.
*/
#define CFG_BOOTMAPSZ (8 << 20) /* Initial Memory map for Linux */
/*-----------------------------------------------------------------------
* FLASH organization
*/
#define CFG_MAX_FLASH_BANKS 2 /* max number of memory banks */
#define CFG_MAX_FLASH_SECT 71 /* max number of sectors on one chip */
#define CFG_FLASH_ERASE_TOUT 120000 /* Timeout for Flash Erase (in
ms) */
#define CFG_FLASH_WRITE_TOUT 500 /* Timeout for Flash Write (in ms) */
#define CFG_ENV_IS_IN_FLASH 1
#define CFG_ENV_OFFSET 0x8000 /* Offset of Environment Sector */
#define CFG_ENV_SIZE 0x4000 /* Total Size of Environment Sector */
/* Address and size of Redundant Environment Sector */
#define CFG_ENV_OFFSET_REDUND (CFG_ENV_OFFSET+CFG_ENV_SIZE)
#define CFG_ENV_SIZE_REDUND (CFG_ENV_SIZE)
/*-----------------------------------------------------------------------
* Hardware Information Block
*/
#define CFG_HWINFO_OFFSET 0x0003FFC0 /* offset of HW Info block */
#define CFG_HWINFO_SIZE 0x00000040 /* size of HW Info block */
#define CFG_HWINFO_MAGIC 0x54514D38 /* 'TQM8' */
/*-----------------------------------------------------------------------
* Cache Configuration
*/
#define CFG_CACHELINE_SIZE 16 /* For all MPC8xx CPUs */
#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
#define CFG_CACHELINE_SHIFT 4 /* log base 2 of the above value */
#endif
/*-----------------------------------------------------------------------
* SYPCR - System Protection Control 11-9
* SYPCR can only be written once after reset!
*-----------------------------------------------------------------------
* Software & Bus Monitor Timer max, Bus Monitor enable, SW Watchdog
freeze
*/
#if defined(CONFIG_WATCHDOG)
#define CFG_SYPCR (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | \
SYPCR_SWE | SYPCR_SWRI| SYPCR_SWP)
#else
#define CFG_SYPCR (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF |
SYPCR_SWP)
#endif
/*-----------------------------------------------------------------------
* SIUMCR - SIU Module Configuration 11-6
*-----------------------------------------------------------------------
* PCMCIA config., multi-function pin tri-state
*/
#ifndef CONFIG_CAN_DRIVER
#define CFG_SIUMCR (SIUMCR_DBGC00 | SIUMCR_DBPC00 | SIUMCR_MLRC01)
#else /* we must activate GPL5 in the SIUMCR for CAN */
#define CFG_SIUMCR (SIUMCR_DBGC11 | SIUMCR_DBPC00 | SIUMCR_MLRC01)
#endif /* CONFIG_CAN_DRIVER */
/*-----------------------------------------------------------------------
* TBSCR - Time Base Status and Control 11-26
*-----------------------------------------------------------------------
* Clear Reference Interrupt Status, Timebase freezing enabled
*/
#define CFG_TBSCR (TBSCR_REFA | TBSCR_REFB | TBSCR_TBF)
/*-----------------------------------------------------------------------
* RTCSC - Real-Time Clock Status and Control Register 11-27
*-----------------------------------------------------------------------
*/
#define CFG_RTCSC (RTCSC_SEC | RTCSC_ALR | RTCSC_RTF| RTCSC_RTE)
/*-----------------------------------------------------------------------
* PISCR - Periodic Interrupt Status and Control 11-31
*-----------------------------------------------------------------------
* Clear Periodic Interrupt Status, Interrupt Timer freezing enabled
*/
#define CFG_PISCR (PISCR_PS | PISCR_PITF)
/*-----------------------------------------------------------------------
* PLPRCR - PLL, Low-Power, and Reset Control Register 15-30
*-----------------------------------------------------------------------
* Reset PLL lock status sticky bit, timer expired status bit and timer
* interrupt status bit
*
* If this is a 80 MHz CPU, set PLL multiplication factor to 5
(5*16=80)!
*/
#define CFG_PLPRCR 0x0a4ac000
//#define CFG_PLPRCR 0x2240c000
/*-----------------------------------------------------------------------
* SCCR - System Clock and reset Control Register 15-27
*-----------------------------------------------------------------------
* Set clock output, timebase and RTC source and divider,
* power management and some other internal clocks
*/
#define SCCR_MASK SCCR_EBDF11
#ifdef CONFIG_80MHz /* for 80 MHz, we use a 16 MHz clock * 5 */
#define CFG_SCCR (/* SCCR_TBS | */ \
SCCR_COM00 | SCCR_DFSYNC00 | SCCR_DFBRG00 | \
SCCR_DFNL000 | SCCR_DFNH000 | SCCR_DFLCD000 | \
SCCR_DFALCD00)
#else /* up to 50 MHz we use a 1:1 clock */
#define CFG_SCCR (SCCR_TBS | \
SCCR_COM00 | SCCR_DFSYNC00 | SCCR_DFBRG00 | \
SCCR_DFNL000 | SCCR_DFNH000 | SCCR_DFLCD000 | \
SCCR_DFALCD00)
#endif /* CONFIG_80MHz */
/*-----------------------------------------------------------------------
* PCMCIA stuff
*-----------------------------------------------------------------------
*
*/
#define CFG_PCMCIA_MEM_ADDR (0xE0000000)
#define CFG_PCMCIA_MEM_SIZE ( 64 << 20 )
#define CFG_PCMCIA_DMA_ADDR (0xE4000000)
#define CFG_PCMCIA_DMA_SIZE ( 64 << 20 )
#define CFG_PCMCIA_ATTRB_ADDR (0xE8000000)
#define CFG_PCMCIA_ATTRB_SIZE ( 64 << 20 )
#define CFG_PCMCIA_IO_ADDR (0xEC000000)
#define CFG_PCMCIA_IO_SIZE ( 64 << 20 )
/*-----------------------------------------------------------------------
* IDE/ATA stuff (Supports IDE harddisk on PCMCIA Adapter)
*-----------------------------------------------------------------------
*/
#define CONFIG_IDE_8xx_PCCARD 1 /* Use IDE with PC Card Adapter */
#undef CONFIG_IDE_8xx_DIRECT /* Direct IDE not supported */
#undef CONFIG_IDE_LED /* LED for ide not supported */
#undef CONFIG_IDE_RESET /* reset for ide not supported */
#define CFG_IDE_MAXBUS 1 /* max. 1 IDE bus */
#define CFG_IDE_MAXDEVICE 1 /* max. 1 drive per IDE bus */
#define CFG_ATA_IDE0_OFFSET 0x0000
#define CFG_ATA_BASE_ADDR CFG_PCMCIA_MEM_ADDR
/* Offset for data I/O */
#define CFG_ATA_DATA_OFFSET (CFG_PCMCIA_MEM_SIZE + 0x320)
/* Offset for normal register accesses */
#define CFG_ATA_REG_OFFSET (2 * CFG_PCMCIA_MEM_SIZE + 0x320)
/* Offset for alternate registers */
#define CFG_ATA_ALT_OFFSET 0x0100
/*-----------------------------------------------------------------------
*
*-----------------------------------------------------------------------
*
*/
/*#define CFG_DER 0x2002000F*/
#define CFG_DER 0
/*
* Init Memory Controller:
*
* BR0/1 and OR0/1 (FLASH)
*/
#define FLASH_BASE0_PRELIM 0x40000000 /* FLASH bank #0 */
#define FLASH_BASE1_PRELIM 0x40400000 /* FLASH bank #0 */
/* used to re-map FLASH both when starting from SRAM or FLASH:
* restrict access enough to keep SRAM working (if any)
* but not too much to meddle with FLASH accesses
*/
#define CFG_REMAP_OR_AM 0x80000000 /* OR addr mask */
#define CFG_PRELIM_OR_AM 0xE0000000 /* OR addr mask */
/*
* FLASH timing:
*/
#if defined(CONFIG_80MHz)
/* 80 MHz CPU - 40 MHz bus: ACS = 00, TRLX = 0, CSNT = 1, SCY = 3, EHTR
= 1 */
#define CFG_OR_TIMING_FLASH (OR_ACS_DIV1 | 0 | OR_CSNT_SAM | \
OR_SCY_3_CLK | OR_EHTR | OR_BI)
#elif defined(CONFIG_66MHz)
/* 66 MHz CPU - 66 MHz bus: ACS = 00, TRLX = 1, CSNT = 1, SCY = 3, EHTR
= 1 */
#define CFG_OR_TIMING_FLASH (OR_ACS_DIV1 | OR_TRLX | OR_CSNT_SAM | \
OR_SCY_3_CLK | OR_EHTR | OR_BI)
#else /* 50 MHz */
/* 50 MHz CPU - 50 MHz bus: ACS = 00, TRLX = 1, CSNT = 1, SCY = 2, EHTR
= 1 */
#define CFG_OR_TIMING_FLASH (OR_ACS_DIV1 | OR_TRLX | OR_CSNT_SAM | \
OR_SCY_2_CLK | OR_EHTR | OR_BI)
#endif /*CONFIG_??MHz */
#define CFG_OR0_REMAP (CFG_REMAP_OR_AM | CFG_OR_TIMING_FLASH)
#define CFG_OR0_PRELIM (CFG_PRELIM_OR_AM | CFG_OR_TIMING_FLASH)
#define CFG_BR0_PRELIM ((FLASH_BASE0_PRELIM & BR_BA_MSK) | BR_V )
#define CFG_OR1_REMAP CFG_OR0_REMAP
#define CFG_OR1_PRELIM CFG_OR0_PRELIM
#define CFG_BR1_PRELIM ((FLASH_BASE1_PRELIM & BR_BA_MSK) | BR_V )
/*
* BR2/3 and OR2/3 (SDRAM)
*
*/
#define SDRAM_BASE2_PRELIM 0x00000000 /* SDRAM bank #0 */
#define SDRAM_BASE3_PRELIM 0x20000000 /* SDRAM bank #1 */
#define SDRAM_MAX_SIZE 0x04000000 /* max 64 MB per bank */
/* SDRAM timing: Multiplexed addresses, GPL5 output to GPL5_A (don't
care) */
#define CFG_OR_TIMING_SDRAM 0x00000A00
#define CFG_OR2_PRELIM (CFG_PRELIM_OR_AM | CFG_OR_TIMING_SDRAM )
#define CFG_BR2_PRELIM ((SDRAM_BASE2_PRELIM & BR_BA_MSK) | BR_MS_UPMA |
BR_V )
#ifndef CONFIG_CAN_DRIVER
#define CFG_OR3_PRELIM CFG_OR2_PRELIM
#define CFG_BR3_PRELIM ((SDRAM_BASE3_PRELIM & BR_BA_MSK) | BR_MS_UPMA |
BR_V )
#else /* CAN uses CS3#, so we can have only one SDRAM bank anyway */
#define CFG_CAN_BASE 0xC0000000 /* CAN mapped at 0xC0000000 */
#define CFG_CAN_OR_AM 0xFFFF8000 /* 32 kB address mask */
#define CFG_OR3_CAN (CFG_CAN_OR_AM | OR_G5LA | OR_BI)
#define CFG_BR3_CAN ((CFG_CAN_BASE & BR_BA_MSK) | \
BR_PS_8 | BR_MS_UPMB | BR_V )
#endif /* CONFIG_CAN_DRIVER */
/*
* Memory Periodic Timer Prescaler
*
* The Divider for PTA (refresh timer) configuration is based on an
* example SDRAM configuration (64 MBit, one bank). The adjustment to
* the number of chip selects (NCS) and the actually needed refresh
* rate is done by setting MPTPR.
*
* PTA is calculated from
* PTA = (gclk * Trefresh) / ((2 ^ (2 * DFBRG)) * PTP * NCS)
*
* gclk CPU clock (not bus clock!)
* Trefresh Refresh cycle * 4 (four word bursts used)
*
* 4096 Rows from SDRAM example configuration
* 1000 factor s -> ms
* 32 PTP (pre-divider from MPTPR) from SDRAM example configuration
* 4 Number of refresh cycles per period
* 64 Refresh cycle in ms per number of rows
* --------------------------------------------
* Divider = 4096 * 32 * 1000 / (4 * 64) = 512000
*
* 50 MHz => 50.000.000 / Divider = 98
* 66 Mhz => 66.000.000 / Divider = 129
* 80 Mhz => 80.000.000 / Divider = 156
*/
#if defined(CONFIG_80MHz)
#define CFG_MAMR_PTA 156
#elif defined(CONFIG_66MHz)
#define CFG_MAMR_PTA 129
#else /* 50 MHz */
#define CFG_MAMR_PTA 98
#endif /*CONFIG_??MHz */
/*
* For 16 MBit, refresh rates could be 31.3 us
* (= 64 ms / 2K = 125 / quad bursts).
* For a simpler initialization, 15.6 us is used instead.
*
* #define CFG_MPTPR_2BK_2K MPTPR_PTP_DIV32 for 2 banks
* #define CFG_MPTPR_1BK_2K MPTPR_PTP_DIV64 for 1 bank
*/
#define CFG_MPTPR_2BK_4K MPTPR_PTP_DIV16 /* setting for 2 banks */
#define CFG_MPTPR_1BK_4K MPTPR_PTP_DIV32 /* setting for 1 bank */
/* refresh rate 7.8 us (= 64 ms / 8K = 31.2 / quad bursts) for 256
MBit */
#define CFG_MPTPR_2BK_8K MPTPR_PTP_DIV8 /* setting for 2 banks */
#define CFG_MPTPR_1BK_8K MPTPR_PTP_DIV16 /* setting for 1 bank */
/*
* MAMR settings for SDRAM
*/
/* 8 column SDRAM */
#define CFG_MAMR_8COL ((CFG_MAMR_PTA << MAMR_PTA_SHIFT) | MAMR_PTAE
| \
MAMR_AMA_TYPE_0 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A11 | \
MAMR_RLFA_1X | MAMR_WLFA_1X | MAMR_TLFA_4X)
/* 9 column SDRAM */
#define CFG_MAMR_9COL ((CFG_MAMR_PTA << MAMR_PTA_SHIFT) | MAMR_PTAE
| \
MAMR_AMA_TYPE_1 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A10 | \
MAMR_RLFA_1X | MAMR_WLFA_1X | MAMR_TLFA_4X)
/*
* Internal Definitions
*
* Boot Flags
*/
#define BOOTFLAG_COLD 0x01 /* Normal Power-On: Boot from FLASH */
#define BOOTFLAG_WARM 0x02 /* Software reboot */
#define CONFIG_SCC1_ENET
#define CONFIG_FEC_ENET 1
#define CONFIG_ETHPRIME "SCC ETHERNET"
#endif /* __CONFIG_H */
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