diff options
Diffstat (limited to 'src/soc/nvidia/tegra132/gic.c')
| -rw-r--r-- | src/soc/nvidia/tegra132/gic.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/src/soc/nvidia/tegra132/gic.c b/src/soc/nvidia/tegra132/gic.c index 95b592f799..6b1b657495 100644 --- a/src/soc/nvidia/tegra132/gic.c +++ b/src/soc/nvidia/tegra132/gic.c @@ -17,6 +17,7 @@ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ +#include <arch/cpu.h> #include <arch/io.h> #include <stdint.h> #include <console/console.h> @@ -80,6 +81,13 @@ static void gicd_write_regs(struct gicd *gicd, size_t offset, interrupts_per_reg, val); } +static void gicd_write_banked_regs(struct gicd *gicd, size_t offset, + size_t interrupts_per_reg, uint32_t val) +{ + /* 1st 32 interrupts are banked per CPU. */ + gic_write_regs(gicd->base, offset, 32, interrupts_per_reg, val); +} + static void gicd_init(struct gicd *gicd, uintptr_t base) { uint32_t typer; @@ -98,6 +106,7 @@ void gic_init(void) { struct gicd gicd; uint32_t * const gicc = (void *)(uintptr_t)TEGRA_GICC_BASE; + uint32_t cpu_mask; gicd_init(&gicd, TEGRA_GICD_BASE); @@ -108,8 +117,22 @@ void gic_init(void) gic_write(gicc, GICC_CTLR, ENABLE_GRP0 | ENABLE_GRP1); gic_write(gicc, GICC_PMR, 1 << 7); - /* All interrupts route go to CPU 0. */ - gicd_write_regs(&gicd, GICD_ITARGETSR, 4, 0x01010101); + cpu_mask = 1 << smp_processor_id(); + cpu_mask |= cpu_mask << 8; + cpu_mask |= cpu_mask << 16; + + /* Only write banked registers for secondary CPUs. */ + if (smp_processor_id()) { + gicd_write_banked_regs(&gicd, GICD_ITARGETSR, 4, cpu_mask); + /* Put interrupts into Group 1. */ + gicd_write_banked_regs(&gicd, GICD_IGROUPR, 32, 0xffffffff); + /* Allow Non-secure access to everything. */ + gicd_write_banked_regs(&gicd, GICD_NSACR, 16, 0xffffffff); + return; + } + + /* All interrupts routed to processors that execute this function. */ + gicd_write_regs(&gicd, GICD_ITARGETSR, 4, cpu_mask); /* Put all interrupts into Gropup 1. */ gicd_write_regs(&gicd, GICD_IGROUPR, 32, 0xffffffff); /* Allow Non-secure access to everything. */ |