diff options
Diffstat (limited to 'target/linux/leon/patches-2.6.36/006-amp_support.patch')
| -rw-r--r-- | target/linux/leon/patches-2.6.36/006-amp_support.patch | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/target/linux/leon/patches-2.6.36/006-amp_support.patch b/target/linux/leon/patches-2.6.36/006-amp_support.patch deleted file mode 100644 index 98d1c9f30d..0000000000 --- a/target/linux/leon/patches-2.6.36/006-amp_support.patch +++ /dev/null @@ -1,85 +0,0 @@ -From 25a68b8cd8ea1553f8b56278418d6c1ecc12e247 Mon Sep 17 00:00:00 2001 -From: Daniel Hellstrom <daniel@gaisler.com> -Date: Wed, 22 Sep 2010 10:19:34 +0200 -Subject: [PATCH] SPARC/LEON: added support for AMP systems with IRQAMP IRQ Controller. - -Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> ---- - arch/sparc/include/asm/leon.h | 12 ++++++++++++ - arch/sparc/include/asm/leon_amba.h | 6 +++--- - arch/sparc/kernel/leon_kernel.c | 14 ++++++++++++++ - 3 files changed, 29 insertions(+), 3 deletions(-) - ---- a/arch/sparc/include/asm/leon.h -+++ b/arch/sparc/include/asm/leon.h -@@ -224,6 +224,18 @@ static inline void sparc_leon3_disable_c - "sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2"); - }; - -+static inline unsigned long sparc_leon3_asr17(void) -+{ -+ u32 asr17; -+ __asm__ __volatile__ ("rd %%asr17, %0\n\t" : "=r"(asr17)); -+ return asr17; -+}; -+ -+static inline int sparc_leon3_cpuid(void) -+{ -+ return sparc_leon3_asr17() >> 28; -+} -+ - #endif /*!__ASSEMBLY__*/ - - #ifdef CONFIG_SMP ---- a/arch/sparc/include/asm/leon_amba.h -+++ b/arch/sparc/include/asm/leon_amba.h -@@ -100,9 +100,8 @@ struct leon3_irqctrl_regs_map { - u32 mpbroadcast; - u32 notused02; - u32 notused03; -- u32 notused10; -- u32 notused11; -- u32 notused12; -+ u32 ampctrl; -+ u32 icsel[2]; - u32 notused13; - u32 notused20; - u32 notused21; -@@ -112,6 +111,7 @@ struct leon3_irqctrl_regs_map { - u32 force[16]; - /* Extended IRQ registers */ - u32 intid[16]; /* 0xc0 */ -+ u32 unused[(0x1000-0x100)/4]; - }; - - struct leon3_apbuart_regs_map { ---- a/arch/sparc/kernel/leon_kernel.c -+++ b/arch/sparc/kernel/leon_kernel.c -@@ -108,6 +108,7 @@ void __init leon_init_timers(irq_handler - struct device_node *rootnp, *np; - struct property *pp; - int len; -+ int cpu, icsel; - - leondebug_irq_disable = 0; - leon_debug_irqout = 0; -@@ -153,6 +154,19 @@ void __init leon_init_timers(irq_handler - LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].ctrl, 0); - # endif - -+ /* The IRQ controller may (if implemented) consist of multiple -+ * IRQ controllers, each mapped on a 4Kb boundary. -+ * Each CPU may be routed to different IRQCTRLs, however -+ * we assume that all CPUs (in SMP system) is routed to the -+ * same IRQ Controller, and for non-SMP only one IRQCTRL is -+ * accessed anyway. -+ * In AMP systems, Linux may not be run on CPU0. -+ */ -+ cpu = sparc_leon3_cpuid(); -+ icsel = LEON3_BYPASS_LOAD_PA(&leon3_irqctrl_regs->icsel[cpu/8]); -+ icsel = (icsel >> ((7 - (cpu&0x7)) * 4)) & 0xf; -+ leon3_irqctrl_regs += icsel; -+ - LEON3_BYPASS_STORE_PA(&(leon3_irqctrl_regs->mask[0]), 0); - eirq = (LEON3_BYPASS_LOAD_PA(&leon3_irqctrl_regs->mpstatus) >> 16) & 0xf; - if ( eirq != 0 ) { |