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https://github.com/AsahiLinux/u-boot
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6d8962e814
Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com> |
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|---|---|---|
| .. | ||
| flash.c | ||
| Makefile | ||
| README | ||
| sbc8240.c | ||
The supported features of the SBC8240/8245 board are:
8240 or 8245 processor
66MHz & 100MHz bus speed
Decrementer timer
1 UART channel (Console channel)
8240 Interrupt Controller
8240 PCI bridge
8240 Memory Controller
SDRAM (16, 64 MB Memory DIMM)
FLASH 512K On board
FLASH 4MB On board
Memory Map from CPU point of view:
Start Size Access to
-----------------------------------------------------
0x00000000 64MB SDRAM DIMM
0xFF000000 4MB On Board FLASH
0xFFF00000 512K On Board FLASH or SRAM (Configured by jumper)
0xFFE00000 8K EEPROM
0xFFE80000 8Bit LED
0xFFF80000 8Bit UART
Setting the board Jumpers & Switches:
In order to get the board running with the default configuration the
jumpers need to be set as follows:
General Jumpers:
____________________________________________
| Jumpers | Jumpers | Jumpers |
|-------------|--------------|---------------|
|JP1 1-2 | JP14 1-2 | JP27 1-2 |
|JP5 Open | JP15 1-2 | JP28 2-3 |
|JP8 1-2 | JP16 1-2 | JP33 Open |
|JP9 1-2 | JP17 1-2 | JP37 Close |
|JP10 1-2 | JP18 1-2 | |
|JP11 2-3 | JP19 1-2 | |
|JP12 1-2 | JP20 1-2 | |
|JP13 1-2 | JP25 Open | |
|_____________|______________|_______________|
Bus speed Jumpers:
_________________________
| 100MHz Bus | 66 MHz Bus |
|------------|------------|
| JP2 1-2 | JP2 1-2 |
| JP3 1-2 | JP3 2-3 |
| JP4 1-2 | JP4 2-3 |
| JP6 1-2 | JP6 2-3 |
| JP7 1-2 | JP7 1-2 |
|____________|____________|
U-Boot 1.1.2 (Jun 24 2004 - 17:01:04)
CPU: MPC8240 Revision 1.1 at 247.500 MHz: 16 kB I-Cache 16 kB D-Cache
Board: sbc8240 Revision 255 Local Bus at 99 MHz
DRAM: 64 MB
FLASH: 512 kB
00 11 8086 1229 0200 00
In: serial
Out: serial
Err: serial
Net: i82559#0
Welcome to U-Boot for the sbc8240
Type ? or help to get on-line help
Hit any key to stop autoboot: 0
=> printenv
bootcmd=version;echo;tftpboot $loadaddr $loadfile;bootvx
bootdelay=5
baudrate=9600
ethaddr=DE:AD:BE:EF:01:01
ipaddr=192.168.193.102
preboot=echo;echo Welcome to U-Boot for the sbc8240;echo;echo Type "? or help" to get on-line help;echo
netmask=255.255.255.248
clocks_in_mhz=1
bootargs=$fei(0,0)host:/T221ppc/target/config/sbc8240/vxWorks.st e=192.168.193.102 h=192.168.193.99 u=target pw=hello f=0x08 tn=sbc8240 o=fei
ipaddr=192.168.193.102
loadfile=vxWorks.st
loadaddr=0x01000000
net_load=tftpboot $loadaddr $loadfile
serverip=192.168.193.99
ethact=i82559#0
stdin=serial
stdout=serial
stderr=serial
Environment size: 631/16380 bytes
=> boot
U-Boot 1.1.2 (Jun 24 2004 - 17:01:04)
Using i82559#0 device
TFTP from server 192.168.193.99; our IP address is 192.168.193.102
Filename 'vxWorks.st'.
Load address: 0x1000000
Loading: #################################################################
#################################################################
##############################################################
done
Bytes transferred = 979927 (ef3d7 hex)
## Ethernet MAC address not copied to NV RAM
Loading .text @ 0x00100000 (758848 bytes)
Loading .data @ 0x001b9440 (79904 bytes)
Clearing .bss @ 0x001ccc60 (20288 bytes)
## Using bootline (@ 0x4200): $fei(0,0)host:/T221ppc/target/config/sbc8240/vxWorks.st e=192.168.193.102 h=192.168.193.99 u=target pw=hello f=0x08 tn=sbc8240 o=fei
## Starting vxWorks at 0x00100000 ...
Adding 2845 symbols for standalone.
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CPU: MPC8240 -- Wind River BSP. SBC8240 Board. Processor #0.
Memory Size: 0x2000000. BSP version 1.2/28.
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