diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-3.9/103-MIPS-bmips-change-compile-time-checks-to-runtime-che.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-3.9/103-MIPS-bmips-change-compile-time-checks-to-runtime-che.patch | 482 |
1 files changed, 482 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-3.9/103-MIPS-bmips-change-compile-time-checks-to-runtime-che.patch b/target/linux/brcm63xx/patches-3.9/103-MIPS-bmips-change-compile-time-checks-to-runtime-che.patch new file mode 100644 index 0000000000..d55189529e --- /dev/null +++ b/target/linux/brcm63xx/patches-3.9/103-MIPS-bmips-change-compile-time-checks-to-runtime-che.patch @@ -0,0 +1,482 @@ +From 12594762fcbec024cb424c9b77efb28402651667 Mon Sep 17 00:00:00 2001 +From: Jonas Gorski <jogo@openwrt.org> +Date: Thu, 27 Jun 2013 21:33:56 +0200 +Subject: [PATCH 04/10] MIPS: bmips: change compile time checks to runtime + checks + +Allow building for all bmips cpus at the same time by changing ifdefs +to checks for the cpu type, or adding appropriate checks to the +assembly. + +Signed-off-by: Jonas Gorski <jogo@openwrt.org> +--- + arch/mips/kernel/bmips_vec.S | 55 +++++++--- + arch/mips/kernel/smp-bmips.c | 241 ++++++++++++++++++++++-------------------- + 2 files changed, 172 insertions(+), 124 deletions(-) + +--- a/arch/mips/kernel/bmips_vec.S ++++ b/arch/mips/kernel/bmips_vec.S +@@ -13,6 +13,7 @@ + #include <asm/asm.h> + #include <asm/asmmacro.h> + #include <asm/cacheops.h> ++#include <asm/cpu.h> + #include <asm/regdef.h> + #include <asm/mipsregs.h> + #include <asm/stackframe.h> +@@ -89,12 +90,18 @@ NESTED(bmips_reset_nmi_vec, PT_SIZE, sp) + beqz k0, bmips_smp_entry + + #if defined(CONFIG_CPU_BMIPS5000) ++ mfc0 k0, CP0_PRID ++ li k1, PRID_IMP_BMIPS5000 ++ andi k0, 0xff00 ++ bne k0, k1, 1f ++ + /* if we're not on core 0, this must be the SMP boot signal */ + li k1, (3 << 25) + mfc0 k0, $22 + and k0, k1 + bnez k0, bmips_smp_entry +-#endif ++1: ++#endif /* CONFIG_CPU_BMIPS5000 */ + #endif /* CONFIG_SMP */ + + /* nope, it's just a regular NMI */ +@@ -137,7 +144,12 @@ bmips_smp_entry: + xori k0, 0x04 + mtc0 k0, CP0_CONFIG + ++ mfc0 k0, CP0_PRID ++ andi k0, 0xff00 + #if defined(CONFIG_CPU_BMIPS4350) || defined(CONFIG_CPU_BMIPS4380) ++ li k1, PRID_IMP_BMIPS43XX ++ bne k0, k1, 2f ++ + /* initialize CPU1's local I-cache */ + li k0, 0x80000000 + li k1, 0x80010000 +@@ -148,14 +160,21 @@ bmips_smp_entry: + 1: cache Index_Store_Tag_I, 0(k0) + addiu k0, 16 + bne k0, k1, 1b +-#elif defined(CONFIG_CPU_BMIPS5000) ++ ++ b 3f ++2: ++#endif /* CONFIG_CPU_BMIPS4350 || CONFIG_CPU_BMIPS4380 */ ++#if defined(CONFIG_CPU_BMIPS5000) + /* set exception vector base */ ++ li k1, PRID_IMP_BMIPS5000 ++ bne k0, k1, 3f ++ + la k0, ebase + lw k0, 0(k0) + mtc0 k0, $15, 1 + BARRIER +-#endif +- ++#endif /* CONFIG_CPU_BMIPS5000 */ ++3: + /* jump back to kseg0 in case we need to remap the kseg1 area */ + la k0, 1f + jr k0 +@@ -221,8 +240,18 @@ END(bmips_smp_int_vec) + LEAF(bmips_enable_xks01) + + #if defined(CONFIG_XKS01) +- ++ mfc0 t0, CP0_PRID ++ andi t2, t0, 0xff00 + #if defined(CONFIG_CPU_BMIPS4380) ++ li t1, PRID_IMP_BMIPS43XX ++ bne t2, t1, 1f ++ ++ andi t0, 0xff ++ addiu t1, t0, -PRID_REV_BMIPS4380_HI ++ bgtz t1, 2f ++ addiu t0, -PRID_REV_BMIPS4380_LO ++ bltz t0, 2f ++ + mfc0 t0, $22, 3 + li t1, 0x1ff0 + li t2, (1 << 12) | (1 << 9) +@@ -231,7 +260,13 @@ LEAF(bmips_enable_xks01) + or t0, t2 + mtc0 t0, $22, 3 + BARRIER +-#elif defined(CONFIG_CPU_BMIPS5000) ++ b 2f ++1: ++#endif /* CONFIG_CPU_BMIPS4380 */ ++#if defined(CONFIG_CPU_BMIPS5000) ++ li t1, PRID_IMP_BMIPS5000 ++ bne t2, t1, 2f ++ + mfc0 t0, $22, 5 + li t1, 0x01ff + li t2, (1 << 8) | (1 << 5) +@@ -240,12 +275,8 @@ LEAF(bmips_enable_xks01) + or t0, t2 + mtc0 t0, $22, 5 + BARRIER +-#else +- +-#error Missing XKS01 setup +- +-#endif +- ++#endif /* CONFIG_CPU_BMIPS5000 */ ++2: + #endif /* defined(CONFIG_XKS01) */ + + jr ra +--- a/arch/mips/kernel/smp-bmips.c ++++ b/arch/mips/kernel/smp-bmips.c +@@ -49,8 +49,11 @@ cpumask_t bmips_booted_mask; + unsigned long bmips_smp_boot_sp; + unsigned long bmips_smp_boot_gp; + ++static void bmips43xx_send_ipi_single(int cpu, unsigned int action); ++static void bmips5000_send_ipi_single(int cpu, unsigned int action); + static void bmips_send_ipi_single(int cpu, unsigned int action); +-static irqreturn_t bmips_ipi_interrupt(int irq, void *dev_id); ++static irqreturn_t bmips43xx_ipi_interrupt(int irq, void *dev_id); ++static irqreturn_t bmips5000_ipi_interrupt(int irq, void *dev_id); + + /* SW interrupts 0,1 are used for interprocessor signaling */ + #define IPI0_IRQ (MIPS_CPU_IRQ_BASE + 0) +@@ -65,48 +68,49 @@ static void __init bmips_smp_setup(void) + { + int i, cpu = 1, boot_cpu = 0; + +-#if defined(CONFIG_CPU_BMIPS4350) || defined(CONFIG_CPU_BMIPS4380) +- /* arbitration priority */ +- clear_c0_brcm_cmt_ctrl(0x30); +- +- /* NBK and weak order flags */ +- set_c0_brcm_config_0(0x30000); +- +- /* Find out if we are running on TP0 or TP1 */ +- boot_cpu = !!(read_c0_brcm_cmt_local() & (1 << 31)); +- +- /* +- * MIPS interrupts 0,1 (SW INT 0,1) cross over to the other thread +- * MIPS interrupt 2 (HW INT 0) is the CPU0 L1 controller output +- * MIPS interrupt 3 (HW INT 1) is the CPU1 L1 controller output +- * +- * If booting from TP1, leave the existing CMT interrupt routing +- * such that TP0 responds to SW1 and TP1 responds to SW0. +- */ +- if (boot_cpu == 0) +- change_c0_brcm_cmt_intr(0xf8018000, ++ if (cpu_is_bmips4350() || cpu_is_bmips4380()) { ++ /* arbitration priority */ ++ clear_c0_brcm_cmt_ctrl(0x30); ++ ++ /* NBK and weak order flags */ ++ set_c0_brcm_config_0(0x30000); ++ ++ /* Find out if we are running on TP0 or TP1 */ ++ boot_cpu = !!(read_c0_brcm_cmt_local() & (1 << 31)); ++ ++ /* ++ * MIPS interrupts 0,1 (SW INT 0,1) cross over to the other ++ * thread ++ * MIPS interrupt 2 (HW INT 0) is the CPU0 L1 controller output ++ * MIPS interrupt 3 (HW INT 1) is the CPU1 L1 controller output ++ * ++ * If booting from TP1, leave the existing CMT interrupt routing ++ * such that TP0 responds to SW1 and TP1 responds to SW0. ++ */ ++ if (boot_cpu == 0) ++ change_c0_brcm_cmt_intr(0xf8018000, + (0x02 << 27) | (0x03 << 15)); +- else +- change_c0_brcm_cmt_intr(0xf8018000, (0x1d << 27)); +- +- /* single core, 2 threads (2 pipelines) */ +- max_cpus = 2; +-#elif defined(CONFIG_CPU_BMIPS5000) +- /* enable raceless SW interrupts */ +- set_c0_brcm_config(0x03 << 22); +- +- /* route HW interrupt 0 to CPU0, HW interrupt 1 to CPU1 */ +- change_c0_brcm_mode(0x1f << 27, 0x02 << 27); ++ else ++ change_c0_brcm_cmt_intr(0xf8018000, (0x1d << 27)); + +- /* N cores, 2 threads per core */ +- max_cpus = (((read_c0_brcm_config() >> 6) & 0x03) + 1) << 1; +- +- /* clear any pending SW interrupts */ +- for (i = 0; i < max_cpus; i++) { +- write_c0_brcm_action(ACTION_CLR_IPI(i, 0)); +- write_c0_brcm_action(ACTION_CLR_IPI(i, 1)); ++ /* single core, 2 threads (2 pipelines) */ ++ max_cpus = 2; ++ } else if (cpu_is_bmips5000()) { ++ /* enable raceless SW interrupts */ ++ set_c0_brcm_config(0x03 << 22); ++ ++ /* route HW interrupt 0 to CPU0, HW interrupt 1 to CPU1 */ ++ change_c0_brcm_mode(0x1f << 27, 0x02 << 27); ++ ++ /* N cores, 2 threads per core */ ++ max_cpus = (((read_c0_brcm_config() >> 6) & 0x03) + 1) << 1; ++ ++ /* clear any pending SW interrupts */ ++ for (i = 0; i < max_cpus; i++) { ++ write_c0_brcm_action(ACTION_CLR_IPI(i, 0)); ++ write_c0_brcm_action(ACTION_CLR_IPI(i, 1)); ++ } + } +-#endif + + if (!bmips_smp_enabled) + max_cpus = 1; +@@ -134,6 +138,15 @@ static void __init bmips_smp_setup(void) + */ + static void bmips_prepare_cpus(unsigned int max_cpus) + { ++ irqreturn_t (*bmips_ipi_interrupt)(int irq, void *dev_id); ++ ++ if (cpu_is_bmips4350() || cpu_is_bmips4380()) ++ bmips_ipi_interrupt = bmips43xx_ipi_interrupt; ++ else if (cpu_is_bmips5000()) ++ bmips_ipi_interrupt = bmips5000_ipi_interrupt; ++ else ++ return; ++ + if (request_irq(IPI0_IRQ, bmips_ipi_interrupt, IRQF_PERCPU, + "smp_ipi0", NULL)) + panic("Can't request IPI0 interrupt\n"); +@@ -168,26 +181,26 @@ static void bmips_boot_secondary(int cpu + + pr_info("SMP: Booting CPU%d...\n", cpu); + +- if (cpumask_test_cpu(cpu, &bmips_booted_mask)) ++ if (cpumask_test_cpu(cpu, &bmips_booted_mask)) { + bmips_send_ipi_single(cpu, 0); +- else { +-#if defined(CONFIG_CPU_BMIPS4350) || defined(CONFIG_CPU_BMIPS4380) +- /* Reset slave TP1 if booting from TP0 */ +- if (cpu_logical_map(cpu) == 0) +- set_c0_brcm_cmt_ctrl(0x01); +-#elif defined(CONFIG_CPU_BMIPS5000) +- if (cpu & 0x01) +- write_c0_brcm_action(ACTION_BOOT_THREAD(cpu)); +- else { +- /* +- * core N thread 0 was already booted; just +- * pulse the NMI line +- */ +- bmips_write_zscm_reg(0x210, 0xc0000000); +- udelay(10); +- bmips_write_zscm_reg(0x210, 0x00); ++ } else { ++ if (cpu_is_bmips4350() || cpu_is_bmips4380()) { ++ /* Reset slave TP1 if booting from TP0 */ ++ if (cpu_logical_map(cpu) == 0) ++ set_c0_brcm_cmt_ctrl(0x01); ++ } else if (cpu_is_bmips5000()) { ++ if (cpu & 0x01) ++ write_c0_brcm_action(ACTION_BOOT_THREAD(cpu)); ++ else { ++ /* ++ * core N thread 0 was already booted; just ++ * pulse the NMI line ++ */ ++ bmips_write_zscm_reg(0x210, 0xc0000000); ++ udelay(10); ++ bmips_write_zscm_reg(0x210, 0x00); ++ } + } +-#endif + cpumask_set_cpu(cpu, &bmips_booted_mask); + } + } +@@ -199,20 +212,21 @@ static void bmips_init_secondary(void) + { + /* move NMI vector to kseg0, in case XKS01 is enabled */ + +-#if defined(CONFIG_CPU_BMIPS4350) || defined(CONFIG_CPU_BMIPS4380) +- void __iomem *cbr = BMIPS_GET_CBR(); +- unsigned long old_vec; +- +- old_vec = __raw_readl(cbr + BMIPS_RELO_VECTOR_CONTROL_1); +- __raw_writel(old_vec & ~0x20000000, cbr + BMIPS_RELO_VECTOR_CONTROL_1); +- +- clear_c0_cause(smp_processor_id() ? C_SW1 : C_SW0); +-#elif defined(CONFIG_CPU_BMIPS5000) +- write_c0_brcm_bootvec(read_c0_brcm_bootvec() & +- (smp_processor_id() & 0x01 ? ~0x20000000 : ~0x2000)); ++ if (cpu_is_bmips4350() || cpu_is_bmips4380()) { ++ void __iomem *cbr = BMIPS_GET_CBR(); ++ unsigned long old_vec; ++ ++ old_vec = __raw_readl(cbr + BMIPS_RELO_VECTOR_CONTROL_1); ++ __raw_writel(old_vec & ~0x20000000, ++ cbr + BMIPS_RELO_VECTOR_CONTROL_1); ++ ++ clear_c0_cause(smp_processor_id() ? C_SW1 : C_SW0); ++ } else if (cpu_is_bmips5000()) { ++ write_c0_brcm_bootvec(read_c0_brcm_bootvec() & ++ (smp_processor_id() & 0x01 ? ~0x20000000 : ~0x2000)); + +- write_c0_brcm_action(ACTION_CLR_IPI(smp_processor_id(), 0)); +-#endif ++ write_c0_brcm_action(ACTION_CLR_IPI(smp_processor_id(), 0)); ++ } + } + + /* +@@ -237,8 +251,6 @@ static void bmips_cpus_done(void) + { + } + +-#if defined(CONFIG_CPU_BMIPS5000) +- + /* + * BMIPS5000 raceless IPIs + * +@@ -247,12 +259,12 @@ static void bmips_cpus_done(void) + * IPI1 is used for SMP_CALL_FUNCTION + */ + +-static void bmips_send_ipi_single(int cpu, unsigned int action) ++static void bmips5000_send_ipi_single(int cpu, unsigned int action) + { + write_c0_brcm_action(ACTION_SET_IPI(cpu, action == SMP_CALL_FUNCTION)); + } + +-static irqreturn_t bmips_ipi_interrupt(int irq, void *dev_id) ++static irqreturn_t bmips5000_ipi_interrupt(int irq, void *dev_id) + { + int action = irq - IPI0_IRQ; + +@@ -266,8 +278,6 @@ static irqreturn_t bmips_ipi_interrupt(i + return IRQ_HANDLED; + } + +-#else +- + /* + * BMIPS43xx racey IPIs + * +@@ -281,7 +291,7 @@ static irqreturn_t bmips_ipi_interrupt(i + static DEFINE_SPINLOCK(ipi_lock); + static DEFINE_PER_CPU(int, ipi_action_mask); + +-static void bmips_send_ipi_single(int cpu, unsigned int action) ++static void bmips43xx_send_ipi_single(int cpu, unsigned int action) + { + unsigned long flags; + +@@ -292,7 +302,7 @@ static void bmips_send_ipi_single(int cp + spin_unlock_irqrestore(&ipi_lock, flags); + } + +-static irqreturn_t bmips_ipi_interrupt(int irq, void *dev_id) ++static irqreturn_t bmips43xx_ipi_interrupt(int irq, void *dev_id) + { + unsigned long flags; + int action, cpu = irq - IPI0_IRQ; +@@ -311,7 +321,13 @@ static irqreturn_t bmips_ipi_interrupt(i + return IRQ_HANDLED; + } + +-#endif /* BMIPS type */ ++static void bmips_send_ipi_single(int cpu, unsigned int action) ++{ ++ if (cpu_is_bmips4350() || cpu_is_bmips4380()) ++ bmips43xx_send_ipi_single(cpu, action); ++ else if (cpu_is_bmips5000()) ++ bmips5000_send_ipi_single(cpu, action); ++} + + static void bmips_send_ipi_mask(const struct cpumask *mask, + unsigned int action) +@@ -421,43 +437,44 @@ void __cpuinit bmips_ebase_setup(void) + + BUG_ON(ebase != CKSEG0); + +-#if defined(CONFIG_CPU_BMIPS4350) +- /* +- * BMIPS4350 cannot relocate the normal vectors, but it +- * can relocate the BEV=1 vectors. So CPU1 starts up at +- * the relocated BEV=1, IV=0 general exception vector @ +- * 0xa000_0380. +- * +- * set_uncached_handler() is used here because: +- * - CPU1 will run this from uncached space +- * - None of the cacheflush functions are set up yet +- */ +- set_uncached_handler(BMIPS_WARM_RESTART_VEC - CKSEG0, +- &bmips_smp_int_vec, 0x80); +- __sync(); +- return; +-#elif defined(CONFIG_CPU_BMIPS4380) +- /* +- * 0x8000_0000: reset/NMI (initially in kseg1) +- * 0x8000_0400: normal vectors +- */ +- new_ebase = 0x80000400; +- cbr = BMIPS_GET_CBR(); +- __raw_writel(0x80080800, cbr + BMIPS_RELO_VECTOR_CONTROL_0); +- __raw_writel(0xa0080800, cbr + BMIPS_RELO_VECTOR_CONTROL_1); +-#elif defined(CONFIG_CPU_BMIPS5000) +- /* +- * 0x8000_0000: reset/NMI (initially in kseg1) +- * 0x8000_1000: normal vectors +- */ +- new_ebase = 0x80001000; +- write_c0_brcm_bootvec(0xa0088008); +- write_c0_ebase(new_ebase); +- if (max_cpus > 2) +- bmips_write_zscm_reg(0xa0, 0xa008a008); +-#else +- return; +-#endif ++ if (cpu_is_bmips4350()) { ++ /* ++ * BMIPS4350 cannot relocate the normal vectors, but it ++ * can relocate the BEV=1 vectors. So CPU1 starts up at ++ * the relocated BEV=1, IV=0 general exception vector @ ++ * 0xa000_0380. ++ * ++ * set_uncached_handler() is used here because: ++ * - CPU1 will run this from uncached space ++ * - None of the cacheflush functions are set up yet ++ */ ++ set_uncached_handler(BMIPS_WARM_RESTART_VEC - CKSEG0, ++ &bmips_smp_int_vec, 0x80); ++ __sync(); ++ return; ++ } else if (cpu_is_bmips4380()) { ++ /* ++ * 0x8000_0000: reset/NMI (initially in kseg1) ++ * 0x8000_0400: normal vectors ++ */ ++ new_ebase = 0x80000400; ++ cbr = BMIPS_GET_CBR(); ++ __raw_writel(0x80080800, cbr + BMIPS_RELO_VECTOR_CONTROL_0); ++ __raw_writel(0xa0080800, cbr + BMIPS_RELO_VECTOR_CONTROL_1); ++ } else if (cpu_is_bmips5000()) { ++ /* ++ * 0x8000_0000: reset/NMI (initially in kseg1) ++ * 0x8000_1000: normal vectors ++ */ ++ new_ebase = 0x80001000; ++ write_c0_brcm_bootvec(0xa0088008); ++ write_c0_ebase(new_ebase); ++ if (max_cpus > 2) ++ bmips_write_zscm_reg(0xa0, 0xa008a008); ++ } else { ++ return; ++ } ++ + board_nmi_handler_setup = &bmips_nmi_handler_setup; + ebase = new_ebase; + } |