> -----Original Message----- > From: qemu-devel-bounces+ericj=mips....@nongnu.org [mailto:qemu-devel- > bounces+ericj=mips....@nongnu.org] On Behalf Of Aurelien Jarno > Sent: Wednesday, November 14, 2012 6:38 AM > To: qemu-devel@nongnu.org > Cc: Aurelien Jarno > Subject: [Qemu-devel] [PATCH] mips/malta: fix CBUS UART interrupt pin > > According to the MIPS Malta Developement Platform User's Manual, the > i8259 interrupt controller is supposed to be connected to the hardware > IRQ0, and the CBUS UART to the hardware interrupt 2. > > In QEMU they are both connected to hardware interrupt 0, the CBUS UART > interrupt being wrong. This patch fixes that. It should be noted that > the irq array in QEMU includes the software interrupts, hence > env->irq[2] is the first hardware interrupt. > > Cc: Ralf Baechle <r...@linux-mips.org> > Signed-off-by: Aurelien Jarno <aurel...@aurel32.net> > --- > hw/mips_malta.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/hw/mips_malta.c b/hw/mips_malta.c > index 0571d58..4d2464a 100644 > --- a/hw/mips_malta.c > +++ b/hw/mips_malta.c > @@ -861,7 +861,8 @@ void mips_malta_init(QEMUMachineInitArgs *args) > be = 0; > #endif > /* FPGA */ > - malta_fpga_init(system_memory, FPGA_ADDRESS, env->irq[2], > serial_hds[2]); > + /* The CBUS UART is attached to the MIPS CPU INT2 pin, ie interrupt 4 > */ > + malta_fpga_init(system_memory, FPGA_ADDRESS, env->irq[4], > serial_hds[2]); > > /* Load firmware in flash / BIOS. */ > dinfo = drive_get(IF_PFLASH, 0, fl_idx); > -- > 1.7.10.4 >
I double checked with a Malta expert here. He verified that the CBUS UART is connected to the HW2 interrupt pin. Reviewed-by: Eric Johnson <er...@mips.com> -Eric
