Hi Anatolij,
This is a problem that the memory space of BAR2 is inaccessible. Even if the value of VIDEO_IO_OFFSET is changed, the problem is not solved.
It is a log that you demanded as follows. ------------------------------------------------- U-Boot 2009.01 ( 3月 19 2009 - 11:17:08)
CPU: AMCC PowerPC 460EX Rev. A at 800 MHz (PLB=200, OPB=100, EBC=100 MHz) Security/Kasumi support Bootstrap Option H - Boot ROM Location I2C (Addr 0x52) Internal PCI arbiter disabled 32 kB I-Cache 32 kB D-Cache Board: Canyonlands - AMCC PPC460EX Evaluation Board, 1*PCIe/1*SATA, Rev. 14 I2C: ready DTT: 1 is 41 C DRAM: 512 MB (ECC not enabled, 400 MHz, CL3) FLASH: 64 MB NAND: 128 MiB PCI: Bus Dev VenId DevId Class Int 00 06 1002 5960 0300 ff 00 06 1002 5940 0380 ff PCIE1: link is not up. PCIE1: initialization as root-complex failed Video: ATI Radeon video card (1002, 5960) found @(0:6:0) rinfo->mmio_base = 0x88000000 Machine Check Exception. Caused by (from msr): regs 1fe3ac30 Data Read PLB Error NIP: 1FF82B1C XER: 00000000 LR: 1FF82B0C REGS: 1fe3ac30 TRAP: 0200 DEAR: 00000000 MSR: 00021000 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 00
GPR00: 1FF82B0C 1FE3AD20 1FE3AF20 EF600300 00000000 00000000 00000000 1CB844A4 GPR08: 1FF43408 88000000 05F5E101 2FAF080A 00000008 055671DE 1FFABF00 1FFBF000 GPR16: 00000023 003F0000 00000001 00000001 10000020 00000000 0000023A E3000CC0 GPR24: 00000001 1FE3AF20 1FE3AF08 1FE3AE88 1FE3AE80 00003000 1FFAE120 1FE40198 Call backtrace: 1FF82B0C 1FF834A8 1FF82498 1FF5FCDC 1FF42EF0 1FF41710 machine check
Regards, Kazuaki Ichinohe
Anatolij Gustschin さんは書きました:
Kazuaki Ichinohe wrote:
Hi Anatolij, Stefan,
The memory space is displayed in BAR2 of the PCI configuration space. The video driver accesses this memory space and the exception is generated.
driver source: u-boot/drivers/video/ati_radeon_fb.c function name: void *video_hw_init(void) line : 760line
it seems that the driver is able to access memory space (registers, e.g. in radeon_identify_vram() ) but cannot access framebuffer?
Please replace '#undef DEBUG' in drivers/video/ati_radeon_fb.c with '#define DEBUG' and also enable CONFIG_VIDEO and use #define VIDEO_IO_OFFSET 0xD0800000 and post the boot log again.
Thanks!
Best regards, Anatolij
I attach the log where the exception is generated. I confirmed it by the source of the following patches. #undef CONFIG_VIDEO #ifdef CONFIG_VIDEO #define CONFIG_BIOSEMU #define CONFIG_ATI_RADEON_FB #define VIDEO_IO_OFFSET 0xD8000000 #define CONFIG_SYS_ISA_IO_BASE_ADDRESS VIDEO_IO_OFFSET #define CONFIG_VIDEO_SW_CURSOR #define CONFIG_VIDEO_LOGO #define CONFIG_CFB_CONSOLE #define CONFIG_SPLASH_SCREEN #define CONFIG_VGA_AS_SINGLE_DEVICE #define CONFIG_CMD_BMP #endif /* #ifdef CONFIG_VIDEO */
Regards, Kazuaki Ichinohe