21 Dec
2008
21 Dec
'08
6:57 p.m.
Dear all,
The uart driver of pxa in l4/pkg/arm_drivers and l4/pkg/drivers seems forget to add volatile on Uart_pxa::wr and Uart_pxa::rd. This still work on qemu since qemu didn't emulate uart timing, but fail on standard 16550 uart on real board.
And I'm confuse on l4/pkg/arm_drivers and l4/pkg/drivers. The uart directory in them are the same, and they all build libarm_uart.a. But while building, it'll first build drivers, then bootstrap, and then arm_drivers, and will override libarm_uart.a. It seems l4/pkg/drivers are redundant.
Best Regards, Tsai, Tung-Chieh