_start:
b reset
+#ifdef CONFIG_ENABLE_ARM_SOC_BOOT0_HOOK
+/*
+ * Various SoCs need something special and SoC-specific up front in
+ * order to boot, allow them to set that in their boot0.h file and then
+ * use it here.
+ */
+#include <asm/arch/boot0.h>
+ARM_SOC_BOOT0_HOOK
+#endif
+
.align 3
.globl _TEXT_BASE
.quad __bss_end - _start
reset:
+ /* Allow the board to save important registers */
+ b save_boot_params
+.globl save_boot_params_ret
+save_boot_params_ret:
+
+#ifdef CONFIG_SYS_RESET_SCTRL
+ bl reset_sctrl
+#endif
/*
* Could be EL3/EL2/EL1, Initial State:
* Little Endian, MMU Disabled, i/dCache Disabled
orr x0, x0, #0xf /* SCR_EL3.NS|IRQ|FIQ|EA */
msr scr_el3, x0
msr cptr_el3, xzr /* Enable FP/SIMD */
+#ifdef COUNTER_FREQUENCY
ldr x0, =COUNTER_FREQUENCY
msr cntfrq_el0, x0 /* Initialize CNTFRQ */
+#endif
b 0f
2: msr vbar_el2, x0
mov x0, #0x33ff
/* Processor specific initialization */
bl lowlevel_init
-#ifdef CONFIG_ARMV8_MULTIENTRY
+#if CONFIG_IS_ENABLED(ARMV8_SPIN_TABLE)
+ branch_if_master x0, x1, master_cpu
+ b spin_table_secondary_jump
+ /* never return */
+#elif defined(CONFIG_ARMV8_MULTIENTRY)
branch_if_master x0, x1, master_cpu
/*
ldr x0, [x1]
cbz x0, slave_cpu
br x0 /* branch to the given address */
-master_cpu:
- /* On the master CPU */
#endif /* CONFIG_ARMV8_MULTIENTRY */
-
+master_cpu:
bl _main
+#ifdef CONFIG_SYS_RESET_SCTRL
+reset_sctrl:
+ switch_el x1, 3f, 2f, 1f
+3:
+ mrs x0, sctlr_el3
+ b 0f
+2:
+ mrs x0, sctlr_el2
+ b 0f
+1:
+ mrs x0, sctlr_el1
+
+0:
+ ldr x1, =0xfdfffffa
+ and x0, x0, x1
+
+ switch_el x1, 6f, 5f, 4f
+6:
+ msr sctlr_el3, x0
+ b 7f
+5:
+ msr sctlr_el2, x0
+ b 7f
+4:
+ msr sctlr_el1, x0
+
+7:
+ dsb sy
+ isb
+ b __asm_invalidate_tlb_all
+ ret
+#endif
+
/*-----------------------------------------------------------------------*/
WEAK(apply_core_errata)
#ifdef CONFIG_ARM_ERRATA_828024
mrs x0, S3_1_c15_c2_0 /* cpuactlr_el1 */
/* Disable non-allocate hint of w-b-n-a memory type */
- mov x0, #0x1 << 49
+ orr x0, x0, #1 << 49
/* Disable write streaming no L1-allocate threshold */
- mov x0, #0x3 << 25
+ orr x0, x0, #3 << 25
/* Disable write streaming no-allocate threshold */
- mov x0, #0x3 << 27
+ orr x0, x0, #3 << 27
msr S3_1_c15_c2_0, x0 /* cpuactlr_el1 */
#endif
#ifdef CONFIG_ARM_ERRATA_826974
mrs x0, S3_1_c15_c2_0 /* cpuactlr_el1 */
/* Disable speculative load execution ahead of a DMB */
- mov x0, #0x1 << 59
+ orr x0, x0, #1 << 59
+ msr S3_1_c15_c2_0, x0 /* cpuactlr_el1 */
+#endif
+
+#ifdef CONFIG_ARM_ERRATA_833471
+ mrs x0, S3_1_c15_c2_0 /* cpuactlr_el1 */
+ /* FPSCR write flush.
+ * Note that in some cases where a flush is unnecessary this
+ could impact performance. */
+ orr x0, x0, #1 << 38
+ msr S3_1_c15_c2_0, x0 /* cpuactlr_el1 */
+#endif
+
+#ifdef CONFIG_ARM_ERRATA_829520
+ mrs x0, S3_1_c15_c2_0 /* cpuactlr_el1 */
+ /* Disable Indirect Predictor bit will prevent this erratum
+ from occurring
+ * Note that in some cases where a flush is unnecessary this
+ could impact performance. */
+ orr x0, x0, #1 << 4
msr S3_1_c15_c2_0, x0 /* cpuactlr_el1 */
#endif
WEAK(lowlevel_init)
mov x29, lr /* Save LR */
-#ifndef CONFIG_ARMV8_MULTIENTRY
- /*
- * For single-entry systems the lowlevel init is very simple.
- */
- ldr x0, =GICD_BASE
- bl gic_init_secure
-
-#else /* CONFIG_ARMV8_MULTIENTRY is set */
-
#if defined(CONFIG_GICV2) || defined(CONFIG_GICV3)
branch_if_slave x0, 1f
ldr x0, =GICD_BASE
#endif
#endif
+#ifdef CONFIG_ARMV8_MULTIENTRY
branch_if_master x0, x1, 2f
/*
WEAK(smp_kick_all_cpus)
/* Kick secondary cpus up by SGI 0 interrupt */
- mov x29, lr /* Save LR */
#if defined(CONFIG_GICV2) || defined(CONFIG_GICV3)
ldr x0, =GICD_BASE
- bl gic_kick_secondary_cpus
+ b gic_kick_secondary_cpus
#endif
- mov lr, x29 /* Restore LR */
ret
ENDPROC(smp_kick_all_cpus)
ret
ENDPROC(c_runtime_cpu_setup)
+
+WEAK(save_boot_params)
+ b save_boot_params_ret /* back to my caller */
+ENDPROC(save_boot_params)