diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/Kconfig | 4 | ||||
| -rw-r--r-- | arch/arm/cpu/armv8/Kconfig | 6 | ||||
| -rw-r--r-- | arch/arm/cpu/armv8/start.S | 19 | ||||
| -rw-r--r-- | arch/arm/include/asm/macro.h | 8 |
4 files changed, 33 insertions, 4 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 72e7981..b9ebee1 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -641,10 +641,12 @@ config TARGET_VEXPRESS64_JUNO config TARGET_LS2085A_EMU bool "Support ls2085a_emu" select ARM64 + select ARMV8_MULTIENTRY config TARGET_LS2085A_SIMU bool "Support ls2085a_simu" select ARM64 + select ARMV8_MULTIENTRY config TARGET_LS1021AQDS bool "Support ls1021aqds" @@ -757,6 +759,8 @@ source "arch/arm/cpu/armv7/zynq/Kconfig" source "arch/arm/cpu/armv7/Kconfig" +source "arch/arm/cpu/armv8/Kconfig" + source "board/aristainetos/Kconfig" source "board/BuR/kwb/Kconfig" source "board/BuR/tseries/Kconfig" diff --git a/arch/arm/cpu/armv8/Kconfig b/arch/arm/cpu/armv8/Kconfig new file mode 100644 index 0000000..4cd84b0 --- /dev/null +++ b/arch/arm/cpu/armv8/Kconfig @@ -0,0 +1,6 @@ +if ARM64 + +config ARMV8_MULTIENTRY + boolean "Enable multiple CPUs to enter into U-boot" + +endif diff --git a/arch/arm/cpu/armv8/start.S b/arch/arm/cpu/armv8/start.S index 4b11aa4..df80a4e 100644 --- a/arch/arm/cpu/armv8/start.S +++ b/arch/arm/cpu/armv8/start.S @@ -77,6 +77,7 @@ reset: /* Processor specific initialization */ bl lowlevel_init +#ifdef CONFIG_ARMV8_MULTIENTRY branch_if_master x0, x1, master_cpu /* @@ -88,11 +89,10 @@ slave_cpu: ldr x0, [x1] cbz x0, slave_cpu br x0 /* branch to the given address */ - - /* - * Master CPU - */ master_cpu: + /* On the master CPU */ +#endif /* CONFIG_ARMV8_MULTIENTRY */ + bl _main /*-----------------------------------------------------------------------*/ @@ -100,6 +100,15 @@ master_cpu: 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 @@ -137,6 +146,8 @@ WEAK(lowlevel_init) bl armv8_switch_to_el1 #endif +#endif /* CONFIG_ARMV8_MULTIENTRY */ + 2: mov lr, x29 /* Restore LR */ ret diff --git a/arch/arm/include/asm/macro.h b/arch/arm/include/asm/macro.h index 1c8c425..3b3146a 100644 --- a/arch/arm/include/asm/macro.h +++ b/arch/arm/include/asm/macro.h @@ -78,6 +78,8 @@ lr .req x30 * choose processor with all zero affinity value as the master. */ .macro branch_if_slave, xreg, slave_label +#ifdef CONFIG_ARMV8_MULTIENTRY + /* NOTE: MPIDR handling will be erroneous on multi-cluster machines */ mrs \xreg, mpidr_el1 tst \xreg, #0xff /* Test Affinity 0 */ b.ne \slave_label @@ -90,6 +92,7 @@ lr .req x30 lsr \xreg, \xreg, #16 tst \xreg, #0xff /* Test Affinity 3 */ b.ne \slave_label +#endif .endm /* @@ -97,12 +100,17 @@ lr .req x30 * choose processor with all zero affinity value as the master. */ .macro branch_if_master, xreg1, xreg2, master_label +#ifdef CONFIG_ARMV8_MULTIENTRY + /* NOTE: MPIDR handling will be erroneous on multi-cluster machines */ mrs \xreg1, mpidr_el1 lsr \xreg2, \xreg1, #32 lsl \xreg1, \xreg1, #40 lsr \xreg1, \xreg1, #40 orr \xreg1, \xreg1, \xreg2 cbz \xreg1, \master_label +#else + b \master_label +#endif .endm .macro armv8_switch_to_el2_m, xreg1 |