Hi Michael,
Le 30/01/2011 22:39, Michael Schwingen a écrit :
Hi,
ist it allowed to call pci_init before relocation?
The code looks like this is not supposed to happen. However, on ARM, arm_pci_init (which calls pci_init in turn) is called from init_sequence, which happens before relocation.
Am I overlooking some way in which this can actually work? Are there boards using this?
If I move pci_init down into board_init_r, I can get PCI working on IXP42x, but I am worried if this will cause problems on other boards.
I cannot see a reason why pci_init should not work before relocation as long as it does not read or write BSS variables or write non-const initialized data -- or overflow the (admittedly limited) C stack.
Are you asking because you discovered that pci_init does not work when called from board_init_f? If so, did you determine exactly what goes wrong?
cu Michael
Amicalement,