On 05/06/2014 04:35 PM, Tim Harvey wrote:
On Tue, May 6, 2014 at 12:11 PM, Jeroen Hofstee dasuboot@myspectrum.nl wrote:
Hello Tim,
<snip>
Since Crt0.S already created gd on the stack before calling board_init_f, can't the assignment of gd not simply be removed? Is there anything special about gdata?
Regards, Jeroen
Jeroen,
That does make sense, but what I find is that York's ocmmit dec1861be90c948ea9fb771927d3d26a994d2e20 requires that gd be blanked and its not. This causes bus_i2c_init to skip its initialization because p->base is not zero.
York, does this make sense? Your patch creates a dependence on gd->srdata being blank which isn't the case with the SRAM when booting from the IMX6 boot rom.
GD should be cleared (zeroed). Then we don't have this problem. Whoever sets up gd (board_int_f, cpu_init_f, or others) should make sure gd is cleared. Why isn't it the case for IMX6 boot rom?
York