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LEON3: added IRQAMP support

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This commit is contained in:
Daniel Hellstrom
2012-04-05 10:23:21 -05:00
committed by Joel Sherrill
parent 684b54a986
commit 3722ff5a73
2 changed files with 18 additions and 3 deletions
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14
c/src/lib/libbsp/sparc/leon3/amba/amba.c
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@@ -39,6 +39,7 @@ extern int scan_uarts(void);
void amba_initialize(void)
{
int i;
int icsel;
amba_apb_device dev;
/* Scan the AMBA Plug&Play info at the default LEON3 area */
@@ -55,6 +56,19 @@ void amba_initialize(void)
}
LEON3_IrqCtrl_Regs = (volatile LEON3_IrqCtrl_Regs_Map *) dev.start;
if ((LEON3_IrqCtrl_Regs->ampctrl >> 28) > 0) {
/* IRQ Controller has support for multiple IRQ Controllers, each
* CPU can be routed to different Controllers, we find out which
* controller by looking at the IRQCTRL Select Register for this CPU.
* Each Controller is located at a 4KByte offset.
*/
icsel = LEON3_IrqCtrl_Regs->icsel[LEON3_Cpu_Index/8];
icsel = (icsel >> ((7 - (LEON3_Cpu_Index & 0x7)) * 4)) & 0xf;
LEON3_IrqCtrl_Regs += icsel;
LEON3_IrqCtrl_Regs->mask[LEON3_Cpu_Index] = 0;
LEON3_IrqCtrl_Regs->force[LEON3_Cpu_Index] = 0;
LEON3_IrqCtrl_Regs->iclear = 0xffffffff;
}
/* Init Extended IRQ controller if available */
leon3_ext_irq_init();

7
c/src/lib/libbsp/sparc/shared/include/ambapp.h
View File

@@ -262,9 +262,8 @@ typedef struct {
volatile unsigned int notused01;
volatile unsigned int notused02;
volatile unsigned int notused03;
volatile unsigned int notused10;
volatile unsigned int notused11;
volatile unsigned int notused12;
volatile unsigned int ampctrl;
volatile unsigned int icsel[2];
volatile unsigned int notused13;
volatile unsigned int notused20;
volatile unsigned int notused21;
@@ -274,6 +273,8 @@ typedef struct {
volatile unsigned int force[16];
/* Extended IRQ registers */
volatile unsigned int intid[16];
/* 0x100, align to 4Kb boundary */
volatile unsigned int resv1[(0x1000-0x100)/4];
} LEON3_IrqCtrl_Regs_Map;
/*****************************/