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u-boot/arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S
Wenbin Song fa18ed7658 armv8/ls1043a: fixup GIC offset for ls1043a rev1 
The LS1043A rev1.1 silicon supports two types of GIC offset: 4K
alignment and 64K alignment. The bit SCFG_GIC400_ALIGN[GIC_ADDR_BIT]
is used to choose which offset will be used.

The LS1043A rev1.0 silicon only supports the CIG offset with 4K
alignment.

If GIC_ADDR_BIT bit is set, 4K alignment is used, or else 64K alignment
is used. 64K alignment is the default setting.

Overriding the weak smp_kick_all_cpus, the new impletment is able to
detect GIC offset.

The default GIC offset in kernel device tree is using 4K alignment, it
need to be fixed if 64K alignment is detected.

Signed-off-by: Wenbin Song <wenbin.song@nxp.com>
Signed-off-by: Mingkai Hu <mingkai.hu@nxp.com>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
2017-01-18 09:29:21 -08:00

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/*
* (C) Copyright 2014-2015 Freescale Semiconductor
*
* SPDX-License-Identifier: GPL-2.0+
*
* Extracted from armv8/start.S
*/
#include <config.h>
#include <linux/linkage.h>
#include <asm/gic.h>
#include <asm/macro.h>
#include <asm/arch-fsl-layerscape/soc.h>
#ifdef CONFIG_MP
#include <asm/arch/mp.h>
#endif
#ifdef CONFIG_FSL_LSCH3
#include <asm/arch-fsl-layerscape/immap_lsch3.h>
#endif
#include <asm/u-boot.h>
/* Get GIC offset
* For LS1043a rev1.0, GIC base address align with 4k.
* For LS1043a rev1.1, if DCFG_GIC400_ALIGN[GIC_ADDR_BIT]
* is set, GIC base address align with 4K, or else align
* with 64k.
* output:
* x0: the base address of GICD
* x1: the base address of GICC
*/
ENTRY(get_gic_offset)
ldr x0, =GICD_BASE
#ifdef CONFIG_GICV2
ldr x1, =GICC_BASE
#endif
#ifdef CONFIG_HAS_FEATURE_GIC64K_ALIGN
ldr x2, =DCFG_CCSR_SVR
ldr w2, [x2]
rev w2, w2
mov w3, w2
ands w3, w3, #SVR_WO_E << 8
mov w4, #SVR_LS1043A << 8
cmp w3, w4
b.ne 1f
ands w2, w2, #0xff
cmp w2, #REV1_0
b.eq 1f
ldr x2, =SCFG_GIC400_ALIGN
ldr w2, [x2]
rev w2, w2
tbnz w2, #GIC_ADDR_BIT, 1f
ldr x0, =GICD_BASE_64K
#ifdef CONFIG_GICV2
ldr x1, =GICC_BASE_64K
#endif
1:
#endif
ret
ENDPROC(get_gic_offset)
ENTRY(smp_kick_all_cpus)
/* Kick secondary cpus up by SGI 0 interrupt */
#if defined(CONFIG_GICV2) || defined(CONFIG_GICV3)
mov x29, lr /* Save LR */
bl get_gic_offset
bl gic_kick_secondary_cpus
mov lr, x29 /* Restore LR */
#endif
ret
ENDPROC(smp_kick_all_cpus)
ENTRY(lowlevel_init)
mov x29, lr /* Save LR */
#ifdef CONFIG_FSL_LSCH3
/* Set Wuo bit for RN-I 20 */
#ifdef CONFIG_LS2080A
ldr x0, =CCI_AUX_CONTROL_BASE(20)
ldr x1, =0x00000010
bl ccn504_set_aux
/*
* Set forced-order mode in RNI-6, RNI-20
* This is required for performance optimization on LS2088A
* LS2080A family does not support setting forced-order mode,
* so skip this operation for LS2080A family
*/
bl get_svr
lsr w0, w0, #16
ldr w1, =SVR_DEV_LS2080A
cmp w0, w1
b.eq 1f
ldr x0, =CCI_AUX_CONTROL_BASE(6)
ldr x1, =0x00000020
bl ccn504_set_aux
ldr x0, =CCI_AUX_CONTROL_BASE(20)
ldr x1, =0x00000020
bl ccn504_set_aux
1:
#endif
/* Add fully-coherent masters to DVM domain */
ldr x0, =CCI_MN_BASE
ldr x1, =CCI_MN_RNF_NODEID_LIST
ldr x2, =CCI_MN_DVM_DOMAIN_CTL_SET
bl ccn504_add_masters_to_dvm
/* Set all RN-I ports to QoS of 15 */
ldr x0, =CCI_S0_QOS_CONTROL_BASE(0)
ldr x1, =0x00FF000C
bl ccn504_set_qos
ldr x0, =CCI_S1_QOS_CONTROL_BASE(0)
ldr x1, =0x00FF000C
bl ccn504_set_qos
ldr x0, =CCI_S2_QOS_CONTROL_BASE(0)
ldr x1, =0x00FF000C
bl ccn504_set_qos
ldr x0, =CCI_S0_QOS_CONTROL_BASE(2)
ldr x1, =0x00FF000C
bl ccn504_set_qos
ldr x0, =CCI_S1_QOS_CONTROL_BASE(2)
ldr x1, =0x00FF000C
bl ccn504_set_qos
ldr x0, =CCI_S2_QOS_CONTROL_BASE(2)
ldr x1, =0x00FF000C
bl ccn504_set_qos
ldr x0, =CCI_S0_QOS_CONTROL_BASE(6)
ldr x1, =0x00FF000C
bl ccn504_set_qos
ldr x0, =CCI_S1_QOS_CONTROL_BASE(6)
ldr x1, =0x00FF000C
bl ccn504_set_qos
ldr x0, =CCI_S2_QOS_CONTROL_BASE(6)
ldr x1, =0x00FF000C
bl ccn504_set_qos
ldr x0, =CCI_S0_QOS_CONTROL_BASE(12)
ldr x1, =0x00FF000C
bl ccn504_set_qos
ldr x0, =CCI_S1_QOS_CONTROL_BASE(12)
ldr x1, =0x00FF000C
bl ccn504_set_qos
ldr x0, =CCI_S2_QOS_CONTROL_BASE(12)
ldr x1, =0x00FF000C
bl ccn504_set_qos
ldr x0, =CCI_S0_QOS_CONTROL_BASE(16)
ldr x1, =0x00FF000C
bl ccn504_set_qos
ldr x0, =CCI_S1_QOS_CONTROL_BASE(16)
ldr x1, =0x00FF000C
bl ccn504_set_qos
ldr x0, =CCI_S2_QOS_CONTROL_BASE(16)
ldr x1, =0x00FF000C
bl ccn504_set_qos
ldr x0, =CCI_S0_QOS_CONTROL_BASE(20)
ldr x1, =0x00FF000C
bl ccn504_set_qos
ldr x0, =CCI_S1_QOS_CONTROL_BASE(20)
ldr x1, =0x00FF000C
bl ccn504_set_qos
ldr x0, =CCI_S2_QOS_CONTROL_BASE(20)
ldr x1, =0x00FF000C
bl ccn504_set_qos
#endif
#ifdef SMMU_BASE
/* Set the SMMU page size in the sACR register */
ldr x1, =SMMU_BASE
ldr w0, [x1, #0x10]
orr w0, w0, #1 << 16 /* set sACR.pagesize to indicate 64K page */
str w0, [x1, #0x10]
#endif
/* Initialize GIC Secure Bank Status */
#if defined(CONFIG_GICV2) || defined(CONFIG_GICV3)
branch_if_slave x0, 1f
bl get_gic_offset
bl gic_init_secure
1:
#ifdef CONFIG_GICV3
ldr x0, =GICR_BASE
bl gic_init_secure_percpu
#elif defined(CONFIG_GICV2)
bl get_gic_offset
bl gic_init_secure_percpu
#endif
#endif
branch_if_master x0, x1, 2f
#if defined(CONFIG_MP) && defined(CONFIG_ARMV8_MULTIENTRY)
ldr x0, =secondary_boot_func
blr x0
#endif
2:
#ifdef CONFIG_FSL_TZPC_BP147
/* Set Non Secure access for all devices protected via TZPC */
ldr x1, =TZPCDECPROT_0_SET_BASE /* Decode Protection-0 Set Reg */
orr w0, w0, #1 << 3 /* DCFG_RESET is accessible from NS world */
str w0, [x1]
isb
dsb sy
#endif
#ifdef CONFIG_FSL_TZASC_400
/*
* LS2080 and its personalities does not support TZASC
* So skip TZASC related operations
*/
bl get_svr
lsr w0, w0, #16
ldr w1, =SVR_DEV_LS2080A
cmp w0, w1
b.eq 1f
/* Set TZASC so that:
* a. We use only Region0 whose global secure write/read is EN
* b. We use only Region0 whose NSAID write/read is EN
*
* NOTE: As per the CCSR map doc, TZASC 3 and TZASC 4 are just
* placeholders.
*/
ldr x1, =TZASC_GATE_KEEPER(0)
ldr w0, [x1] /* Filter 0 Gate Keeper Register */
orr w0, w0, #1 << 0 /* Set open_request for Filter 0 */
str w0, [x1]
ldr x1, =TZASC_GATE_KEEPER(1)
ldr w0, [x1] /* Filter 0 Gate Keeper Register */
orr w0, w0, #1 << 0 /* Set open_request for Filter 0 */
str w0, [x1]
ldr x1, =TZASC_REGION_ATTRIBUTES_0(0)
ldr w0, [x1] /* Region-0 Attributes Register */
orr w0, w0, #1 << 31 /* Set Sec global write en, Bit[31] */
orr w0, w0, #1 << 30 /* Set Sec global read en, Bit[30] */
str w0, [x1]
ldr x1, =TZASC_REGION_ATTRIBUTES_0(1)
ldr w0, [x1] /* Region-1 Attributes Register */
orr w0, w0, #1 << 31 /* Set Sec global write en, Bit[31] */
orr w0, w0, #1 << 30 /* Set Sec global read en, Bit[30] */
str w0, [x1]
ldr x1, =TZASC_REGION_ID_ACCESS_0(0)
ldr w0, [x1] /* Region-0 Access Register */
mov w0, #0xFFFFFFFF /* Set nsaid_wr_en and nsaid_rd_en */
str w0, [x1]
ldr x1, =TZASC_REGION_ID_ACCESS_0(1)
ldr w0, [x1] /* Region-1 Attributes Register */
mov w0, #0xFFFFFFFF /* Set nsaid_wr_en and nsaid_rd_en */
str w0, [x1]
isb
dsb sy
#endif
1:
#ifdef CONFIG_ARCH_LS1046A
/* Initialize the L2 RAM latency */
mrs x1, S3_1_c11_c0_2
mov x0, #0x1C7
/* Clear L2 Tag RAM latency and L2 Data RAM latency */
bic x1, x1, x0
/* Set L2 data ram latency bits [2:0] */
orr x1, x1, #0x2
/* set L2 tag ram latency bits [8:6] */
orr x1, x1, #0x80
msr S3_1_c11_c0_2, x1
isb
#endif
#if defined(CONFIG_FSL_LSCH2) && !defined(CONFIG_SPL_BUILD)
bl fsl_ocram_init
#endif
mov lr, x29 /* Restore LR */
ret
ENDPROC(lowlevel_init)
#if defined(CONFIG_FSL_LSCH2) && !defined(CONFIG_SPL_BUILD)
ENTRY(fsl_ocram_init)
mov x28, lr /* Save LR */
bl fsl_clear_ocram
bl fsl_ocram_clear_ecc_err
mov lr, x28 /* Restore LR */
ret
ENDPROC(fsl_ocram_init)
ENTRY(fsl_clear_ocram)
/* Clear OCRAM */
ldr x0, =CONFIG_SYS_FSL_OCRAM_BASE
ldr x1, =(CONFIG_SYS_FSL_OCRAM_BASE + CONFIG_SYS_FSL_OCRAM_SIZE)
mov x2, #0
clear_loop:
str x2, [x0]
add x0, x0, #8
cmp x0, x1
b.lo clear_loop
ret
ENDPROC(fsl_clear_ocram)
ENTRY(fsl_ocram_clear_ecc_err)
/* OCRAM1/2 ECC status bit */
mov w1, #0x60
ldr x0, =DCSR_DCFG_SBEESR2
str w1, [x0]
ldr x0, =DCSR_DCFG_MBEESR2
str w1, [x0]
ret
ENDPROC(fsl_ocram_init)
#endif
#ifdef CONFIG_FSL_LSCH3
.globl get_svr
get_svr:
ldr x1, =FSL_LSCH3_SVR
ldr w0, [x1]
ret
hnf_pstate_poll:
/* x0 has the desired status, return 0 for success, 1 for timeout
* clobber x1, x2, x3, x4, x6, x7
*/
mov x1, x0
mov x7, #0 /* flag for timeout */
mrs x3, cntpct_el0 /* read timer */
add x3, x3, #1200 /* timeout after 100 microseconds */
mov x0, #0x18
movk x0, #0x420, lsl #16 /* HNF0_PSTATE_STATUS */
mov w6, #8 /* HN-F node count */
1:
ldr x2, [x0]
cmp x2, x1 /* check status */
b.eq 2f
mrs x4, cntpct_el0
cmp x4, x3
b.ls 1b
mov x7, #1 /* timeout */
b 3f
2:
add x0, x0, #0x10000 /* move to next node */
subs w6, w6, #1
cbnz w6, 1b
3:
mov x0, x7
ret
hnf_set_pstate:
/* x0 has the desired state, clobber x1, x2, x6 */
mov x1, x0
/* power state to SFONLY */
mov w6, #8 /* HN-F node count */
mov x0, #0x10
movk x0, #0x420, lsl #16 /* HNF0_PSTATE_REQ */
1: /* set pstate to sfonly */
ldr x2, [x0]
and x2, x2, #0xfffffffffffffffc /* & HNFPSTAT_MASK */
orr x2, x2, x1
str x2, [x0]
add x0, x0, #0x10000 /* move to next node */
subs w6, w6, #1
cbnz w6, 1b
ret
ENTRY(__asm_flush_l3_dcache)
/*
* Return status in x0
* success 0
* tmeout 1 for setting SFONLY, 2 for FAM, 3 for both
*/
mov x29, lr
mov x8, #0
dsb sy
mov x0, #0x1 /* HNFPSTAT_SFONLY */
bl hnf_set_pstate
mov x0, #0x4 /* SFONLY status */
bl hnf_pstate_poll
cbz x0, 1f
mov x8, #1 /* timeout */
1:
dsb sy
mov x0, #0x3 /* HNFPSTAT_FAM */
bl hnf_set_pstate
mov x0, #0xc /* FAM status */
bl hnf_pstate_poll
cbz x0, 1f
add x8, x8, #0x2
1:
mov x0, x8
mov lr, x29
ret
ENDPROC(__asm_flush_l3_dcache)
#endif
#ifdef CONFIG_MP
/* Keep literals not used by the secondary boot code outside it */
.ltorg
/* Using 64 bit alignment since the spin table is accessed as data */
.align 4
.global secondary_boot_code
/* Secondary Boot Code starts here */
secondary_boot_code:
.global __spin_table
__spin_table:
.space CONFIG_MAX_CPUS*SPIN_TABLE_ELEM_SIZE
.align 2
ENTRY(secondary_boot_func)
/*
* MPIDR_EL1 Fields:
* MPIDR[1:0] = AFF0_CPUID <- Core ID (0,1)
* MPIDR[7:2] = AFF0_RES
* MPIDR[15:8] = AFF1_CLUSTERID <- Cluster ID (0,1,2,3)
* MPIDR[23:16] = AFF2_CLUSTERID
* MPIDR[24] = MT
* MPIDR[29:25] = RES0
* MPIDR[30] = U
* MPIDR[31] = ME
* MPIDR[39:32] = AFF3
*
* Linear Processor ID (LPID) calculation from MPIDR_EL1:
* (We only use AFF0_CPUID and AFF1_CLUSTERID for now
* until AFF2_CLUSTERID and AFF3 have non-zero values)
*
* LPID = MPIDR[15:8] | MPIDR[1:0]
*/
mrs x0, mpidr_el1
ubfm x1, x0, #8, #15
ubfm x2, x0, #0, #1
orr x10, x2, x1, lsl #2 /* x10 has LPID */
ubfm x9, x0, #0, #15 /* x9 contains MPIDR[15:0] */
/*
* offset of the spin table element for this core from start of spin
* table (each elem is padded to 64 bytes)
*/
lsl x1, x10, #6
ldr x0, =__spin_table
/* physical address of this cpus spin table element */
add x11, x1, x0
ldr x0, =__real_cntfrq
ldr x0, [x0]
msr cntfrq_el0, x0 /* set with real frequency */
str x9, [x11, #16] /* LPID */
mov x4, #1
str x4, [x11, #8] /* STATUS */
dsb sy
#if defined(CONFIG_GICV3)
gic_wait_for_interrupt_m x0
#elif defined(CONFIG_GICV2)
bl get_gic_offset
mov x0, x1
gic_wait_for_interrupt_m x0, w1
#endif
slave_cpu:
wfe
ldr x0, [x11]
cbz x0, slave_cpu
#ifndef CONFIG_ARMV8_SWITCH_TO_EL1
mrs x1, sctlr_el2
#else
mrs x1, sctlr_el1
#endif
tbz x1, #25, cpu_is_le
rev x0, x0 /* BE to LE conversion */
cpu_is_le:
ldr x5, [x11, #24]
ldr x6, =IH_ARCH_DEFAULT
cmp x6, x5
b.eq 1f
#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
adr x3, secondary_switch_to_el1
ldr x4, =ES_TO_AARCH64
#else
ldr x3, [x11]
ldr x4, =ES_TO_AARCH32
#endif
bl secondary_switch_to_el2
1:
#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
adr x3, secondary_switch_to_el1
#else
ldr x3, [x11]
#endif
ldr x4, =ES_TO_AARCH64
bl secondary_switch_to_el2
ENDPROC(secondary_boot_func)
ENTRY(secondary_switch_to_el2)
switch_el x5, 1f, 0f, 0f
0: ret
1: armv8_switch_to_el2_m x3, x4, x5
ENDPROC(secondary_switch_to_el2)
ENTRY(secondary_switch_to_el1)
mrs x0, mpidr_el1
ubfm x1, x0, #8, #15
ubfm x2, x0, #0, #1
orr x10, x2, x1, lsl #2 /* x10 has LPID */
lsl x1, x10, #6
ldr x0, =__spin_table
/* physical address of this cpus spin table element */
add x11, x1, x0
ldr x3, [x11]
ldr x5, [x11, #24]
ldr x6, =IH_ARCH_DEFAULT
cmp x6, x5
b.eq 2f
ldr x4, =ES_TO_AARCH32
bl switch_to_el1
2: ldr x4, =ES_TO_AARCH64
switch_to_el1:
switch_el x5, 0f, 1f, 0f
0: ret
1: armv8_switch_to_el1_m x3, x4, x5
ENDPROC(secondary_switch_to_el1)
/* Ensure that the literals used by the secondary boot code are
* assembled within it (this is required so that we can protect
* this area with a single memreserve region
*/
.ltorg
/* 64 bit alignment for elements accessed as data */
.align 4
.global __real_cntfrq
__real_cntfrq:
.quad COUNTER_FREQUENCY
.globl __secondary_boot_code_size
.type __secondary_boot_code_size, %object
/* Secondary Boot Code ends here */
__secondary_boot_code_size:
.quad .-secondary_boot_code
#endif
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