If size of "gzrom.bin" is above 512K, during running "load -r -f 0xbfc00000 ..."
commands, the error below will occures
"Loading file: tftp://10.2.5.27/gz.bin (bin) |
Loaded 536604 bytes
Programming flash 83000000:8301c into bfc00000
Erase failed!"
Now we do below works:
1. Modify address of enviroment
2. Modify the max size of bios to 1M
Thanks <wangxiyue@loongson.cn>
Target:Bonito3aserver
Now support GFXUMA and GFXSP mode includes: SP mode (2G,4G)X(64M,128M),UMA mode
(2G,4G)X(64M,128M,256M,512M). Notice that: In UMA mode, change physical memory
address starting from 0x80000000 in order to satisfy 32-bit pci config address
access to internal gfx device. So This bios can go ok only with the suitable
kernel image in which pysical memory address also begins with 0x80000000. In UMA
mode, if glxgears is running, sometimes black screen will appear, this may be due
to it uses too much system bandwidth. While in SP mode, this problem never occures.
Now video frame buffer size can be assigned in configuration file:Bonito.3a780e,
Changing "VRAM_SIZE=128" means set video memory size to be 128M in UMA or SP mode.
No other code need to be changed. Notice: in GFX_SP mode, max video ram size is 128M
becasue of the graphic memory capacity limit in LS3A780E board at this moment.
Submmited and tested by xiaqichao@ict.ac.cn
Target:Bonito3a780e
Now all the video memory(128M) of the graphic memory chip on LS3A780E board
are availabe. By the way, enlarge usable PCI MEM size from 0x0400000 to
0x40000000, this size shoulde be enough for lots fo bridge chip groups at
this moment. Network, usb device and ps2 keyboard are all normal both in BIOS
and kernle. Thanks xiangy@lemote.com.
NOTICE HERE: the vga bios base address of gpu driver in kernle code should
be changed to 0xc7f00000 from original 0xc7f00000 if this patch is applied,
otherwise no vga or graphic output during boot kernel.
Target: Bonito3a780e
large video frame buffer up to 512M for bridge chip connected with HT bus.
It PASS test only in GUP_SP mode, which is the defalut mode in 3A780e branch of PMON.
Address space between 0x40000000 and 0x7fffffff is map to 1G memory space before, now
system momery size is at leaset 2G, so the space is left free to be used as PCI MEM space.
While PCI IO Space and HT Space is the same as before.
NOTICE: pci mem space base address need to be changed to 0x40000000 in kenrel source code
if this patch is applied, otherwise kernel will boot fail. If the bridge chip is connected
to PCIX controler in Loongson CPU, this patch should be changed to be applied.
Target: Bontio3a780e
xueshuangbai@ict.ac.cn
wanghongmei
LI Wengang