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-rw-r--r--arch/arm/cpu/armv7/Makefile2
-rw-r--r--arch/arm/cpu/armv7/cp15.c29
-rw-r--r--arch/arm/cpu/armv7/omap-common/Makefile2
-rw-r--r--arch/arm/cpu/armv7/omap-common/lowlevel_init.S20
-rw-r--r--arch/arm/cpu/armv7/omap3/board.c60
-rw-r--r--arch/arm/cpu/armv7/omap3/lowlevel_init.S11
-rw-r--r--arch/arm/cpu/armv7/omap4/hwinit.c4
-rw-r--r--arch/arm/cpu/armv7/omap5/hwinit.c23
-rw-r--r--arch/arm/cpu/armv7/start.S64
-rw-r--r--arch/arm/include/asm/arch-omap3/omap.h (renamed from arch/arm/include/asm/arch-omap3/omap3.h)0
-rw-r--r--arch/arm/include/asm/arch-omap3/sys_proto.h2
-rw-r--r--arch/arm/include/asm/arch-omap4/sys_proto.h4
-rw-r--r--arch/arm/include/asm/arch-omap5/sys_proto.h3
-rw-r--r--arch/arm/include/asm/armv7.h5
-rw-r--r--arch/arm/include/asm/omap_common.h2
15 files changed, 167 insertions, 64 deletions
diff --git a/arch/arm/cpu/armv7/Makefile b/arch/arm/cpu/armv7/Makefile
index ad22489e1a..1312a9db9e 100644
--- a/arch/arm/cpu/armv7/Makefile
+++ b/arch/arm/cpu/armv7/Makefile
@@ -9,7 +9,7 @@ extra-y := start.o
obj-y += cache_v7.o
-obj-y += cpu.o
+obj-y += cpu.o cp15.o
obj-y += syslib.o
ifneq ($(CONFIG_AM43XX)$(CONFIG_AM33XX)$(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX)$(CONFIG_TEGRA)$(CONFIG_MX6)$(CONFIG_TI81XX)$(CONFIG_AT91FAMILY)$(CONFIG_SUNXI),)
diff --git a/arch/arm/cpu/armv7/cp15.c b/arch/arm/cpu/armv7/cp15.c
new file mode 100644
index 0000000000..b44c9f94a8
--- /dev/null
+++ b/arch/arm/cpu/armv7/cp15.c
@@ -0,0 +1,29 @@
+/*
+ * (C) Copyright 2015 Texas Insturments
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/*
+ * CP15 specific code
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/system.h>
+#include <asm/cache.h>
+#include <asm/armv7.h>
+#include <linux/compiler.h>
+
+void __weak v7_arch_cp15_set_l2aux_ctrl(u32 l2actlr, u32 cpu_midr,
+ u32 cpu_rev_comb, u32 cpu_variant,
+ u32 cpu_rev)
+{
+ asm volatile ("mcr p15, 1, %0, c15, c0, 0\n\t" : : "r"(l2actlr));
+}
+
+void __weak v7_arch_cp15_set_acr(u32 acr, u32 cpu_midr, u32 cpu_rev_comb,
+ u32 cpu_variant, u32 cpu_rev)
+{
+ asm volatile ("mcr p15, 0, %0, c1, c0, 1\n\t" : : "r"(acr));
+}
diff --git a/arch/arm/cpu/armv7/omap-common/Makefile b/arch/arm/cpu/armv7/omap-common/Makefile
index 7695e16d36..f3725b267c 100644
--- a/arch/arm/cpu/armv7/omap-common/Makefile
+++ b/arch/arm/cpu/armv7/omap-common/Makefile
@@ -28,7 +28,7 @@ endif
ifeq ($(CONFIG_OMAP34XX),)
obj-y += boot-common.o
-obj-y += lowlevel_init.o
endif
+obj-y += lowlevel_init.o
obj-y += mem-common.o
diff --git a/arch/arm/cpu/armv7/omap-common/lowlevel_init.S b/arch/arm/cpu/armv7/omap-common/lowlevel_init.S
index e19c7aecec..746df922c2 100644
--- a/arch/arm/cpu/armv7/omap-common/lowlevel_init.S
+++ b/arch/arm/cpu/armv7/omap-common/lowlevel_init.S
@@ -16,17 +16,23 @@
#include <asm/arch/spl.h>
#include <linux/linkage.h>
+#ifndef CONFIG_OMAP34XX
ENTRY(save_boot_params)
ldr r1, =OMAP_SRAM_SCRATCH_BOOT_PARAMS
str r0, [r1]
b save_boot_params_ret
ENDPROC(save_boot_params)
+#endif
-ENTRY(set_pl310_ctrl_reg)
- PUSH {r4-r11, lr} @ save registers - ROM code may pollute
+ENTRY(omap_smc1)
+ PUSH {r4-r12, lr} @ save registers - ROM code may pollute
@ our registers
- LDR r12, =0x102 @ Set PL310 control register - value in R0
- .word 0xe1600070 @ SMC #0 - hand assembled because -march=armv5
- @ call ROM Code API to set control register
- POP {r4-r11, pc}
-ENDPROC(set_pl310_ctrl_reg)
+ MOV r12, r0 @ Service
+ MOV r0, r1 @ Argument
+ DSB
+ DMB
+ .word 0xe1600070 @ SMC #0 - hand assembled for GCC versions
+ @ call ROM Code API for the service requested
+
+ POP {r4-r12, pc}
+ENDPROC(omap_smc1)
diff --git a/arch/arm/cpu/armv7/omap3/board.c b/arch/arm/cpu/armv7/omap3/board.c
index dd53b207f8..b064c0cc83 100644
--- a/arch/arm/cpu/armv7/omap3/board.c
+++ b/arch/arm/cpu/armv7/omap3/board.c
@@ -35,7 +35,6 @@ DECLARE_GLOBAL_DATA_PTR;
/* Declarations */
extern omap3_sysinfo sysinfo;
-static void omap3_setup_aux_cr(void);
#ifndef CONFIG_SYS_L2CACHE_OFF
static void omap3_invalidate_l2_cache_secure(void);
#endif
@@ -244,9 +243,6 @@ void s_init(void)
try_unlock_memory();
- /* Errata workarounds */
- omap3_setup_aux_cr();
-
#ifndef CONFIG_SYS_L2CACHE_OFF
/* Invalidate L2-cache from secure mode */
omap3_invalidate_l2_cache_secure();
@@ -419,39 +415,30 @@ static void omap3_emu_romcode_call(u32 service_id, u32 *parameters)
do_omap3_emu_romcode_call(service_id, OMAP3_PUBLIC_SRAM_SCRATCH_AREA);
}
-static void omap3_update_aux_cr_secure(u32 set_bits, u32 clear_bits)
+void __weak omap3_set_aux_cr_secure(u32 acr)
{
- u32 acr;
-
- /* Read ACR */
- asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr));
- acr &= ~clear_bits;
- acr |= set_bits;
+ struct emu_hal_params emu_romcode_params;
- if (get_device_type() == GP_DEVICE) {
- omap3_gp_romcode_call(OMAP3_GP_ROMCODE_API_WRITE_ACR,
- acr);
- } else {
- struct emu_hal_params emu_romcode_params;
- emu_romcode_params.num_params = 1;
- emu_romcode_params.param1 = acr;
- omap3_emu_romcode_call(OMAP3_EMU_HAL_API_WRITE_ACR,
- (u32 *)&emu_romcode_params);
- }
+ emu_romcode_params.num_params = 1;
+ emu_romcode_params.param1 = acr;
+ omap3_emu_romcode_call(OMAP3_EMU_HAL_API_WRITE_ACR,
+ (u32 *)&emu_romcode_params);
}
-static void omap3_setup_aux_cr(void)
+void v7_arch_cp15_set_acr(u32 acr, u32 cpu_midr, u32 cpu_rev_comb,
+ u32 cpu_variant, u32 cpu_rev)
{
- /* Workaround for Cortex-A8 errata: #454179 #430973
- * Set "IBE" bit
- * Set "Disable Branch Size Mispredicts" bit
- * Workaround for erratum #621766
- * Enable L1NEON bit
- * ACR |= (IBE | DBSM | L1NEON) => ACR |= 0xE0
- */
- omap3_update_aux_cr_secure(0xE0, 0);
+ /* Write ACR - affects secure banked bits */
+ if (get_device_type() == GP_DEVICE)
+ omap_smc1(OMAP3_GP_ROMCODE_API_WRITE_ACR, acr);
+ else
+ omap3_set_aux_cr_secure(acr);
+
+ /* Write ACR - affects non-secure banked bits - some erratas need it */
+ asm volatile ("mcr p15, 0, %0, c1, c0, 1" : : "r" (acr));
}
+
#ifndef CONFIG_SYS_L2CACHE_OFF
static void omap3_update_aux_cr(u32 set_bits, u32 clear_bits)
{
@@ -461,17 +448,15 @@ static void omap3_update_aux_cr(u32 set_bits, u32 clear_bits)
asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr));
acr &= ~clear_bits;
acr |= set_bits;
+ v7_arch_cp15_set_acr(acr, 0, 0, 0, 0);
- /* Write ACR - affects non-secure banked bits */
- asm volatile ("mcr p15, 0, %0, c1, c0, 1" : : "r" (acr));
}
/* Invalidate the entire L2 cache from secure mode */
static void omap3_invalidate_l2_cache_secure(void)
{
if (get_device_type() == GP_DEVICE) {
- omap3_gp_romcode_call(OMAP3_GP_ROMCODE_API_L2_INVAL,
- 0);
+ omap_smc1(OMAP3_GP_ROMCODE_API_L2_INVAL, 0);
} else {
struct emu_hal_params emu_romcode_params;
emu_romcode_params.num_params = 1;
@@ -483,10 +468,9 @@ static void omap3_invalidate_l2_cache_secure(void)
void v7_outer_cache_enable(void)
{
- /* Set L2EN */
- omap3_update_aux_cr_secure(0x2, 0);
/*
+ * Set L2EN
* On some revisions L2EN bit is banked on some revisions it's not
* No harm in setting both banked bits(in fact this is required
* by an erratum)
@@ -496,10 +480,8 @@ void v7_outer_cache_enable(void)
void omap3_outer_cache_disable(void)
{
- /* Clear L2EN */
- omap3_update_aux_cr_secure(0, 0x2);
-
/*
+ * Clear L2EN
* On some revisions L2EN bit is banked on some revisions it's not
* No harm in clearing both banked bits(in fact this is required
* by an erratum)
diff --git a/arch/arm/cpu/armv7/omap3/lowlevel_init.S b/arch/arm/cpu/armv7/omap3/lowlevel_init.S
index 80cb2639f6..7a691519bb 100644
--- a/arch/arm/cpu/armv7/omap3/lowlevel_init.S
+++ b/arch/arm/cpu/armv7/omap3/lowlevel_init.S
@@ -27,17 +27,6 @@ ENTRY(save_boot_params)
ENDPROC(save_boot_params)
#endif
-ENTRY(omap3_gp_romcode_call)
- PUSH {r4-r12, lr} @ Save all registers from ROM code!
- MOV r12, r0 @ Copy the Service ID in R12
- MOV r0, r1 @ Copy parameter to R0
- mcr p15, 0, r0, c7, c10, 4 @ DSB
- mcr p15, 0, r0, c7, c10, 5 @ DMB
- .word 0xe1600070 @ SMC #0 to enter monitor - hand assembled
- @ because we use -march=armv5
- POP {r4-r12, pc}
-ENDPROC(omap3_gp_romcode_call)
-
/*
* Funtion for making PPA HAL API calls in secure devices
* Input:
diff --git a/arch/arm/cpu/armv7/omap4/hwinit.c b/arch/arm/cpu/armv7/omap4/hwinit.c
index db16548fac..9792761d40 100644
--- a/arch/arm/cpu/armv7/omap4/hwinit.c
+++ b/arch/arm/cpu/armv7/omap4/hwinit.c
@@ -159,11 +159,11 @@ void init_omap_revision(void)
#ifndef CONFIG_SYS_L2CACHE_OFF
void v7_outer_cache_enable(void)
{
- set_pl310_ctrl_reg(1);
+ omap_smc1(OMAP4_SERVICE_PL310_CONTROL_REG_SET, 1);
}
void v7_outer_cache_disable(void)
{
- set_pl310_ctrl_reg(0);
+ omap_smc1(OMAP4_SERVICE_PL310_CONTROL_REG_SET, 0);
}
#endif /* !CONFIG_SYS_L2CACHE_OFF */
diff --git a/arch/arm/cpu/armv7/omap5/hwinit.c b/arch/arm/cpu/armv7/omap5/hwinit.c
index a8a474a88b..8d6b59eeb0 100644
--- a/arch/arm/cpu/armv7/omap5/hwinit.c
+++ b/arch/arm/cpu/armv7/omap5/hwinit.c
@@ -304,6 +304,21 @@ void config_data_eye_leveling_samples(u32 emif_base)
(*ctrl)->control_emif2_sdram_config_ext);
}
+void init_cpu_configuration(void)
+{
+ u32 l2actlr;
+
+ asm volatile("mrc p15, 1, %0, c15, c0, 0" : "=r"(l2actlr));
+ /*
+ * L2ACTLR: Ensure to enable the following:
+ * 3: Disable clean/evict push to external
+ * 4: Disable WriteUnique and WriteLineUnique transactions from master
+ * 8: Disable DVM/CMO message broadcast
+ */
+ l2actlr |= 0x118;
+ omap_smc1(OMAP5_SERVICE_L2ACTLR_SET, l2actlr);
+}
+
void init_omap_revision(void)
{
/*
@@ -342,6 +357,7 @@ void init_omap_revision(void)
default:
*omap_si_rev = OMAP5430_SILICON_ID_INVALID;
}
+ init_cpu_configuration();
}
void reset_cpu(ulong ignored)
@@ -381,3 +397,10 @@ void setup_warmreset_time(void)
rst_val |= rst_time;
writel(rst_val, (*prcm)->prm_rsttime);
}
+
+void v7_arch_cp15_set_l2aux_ctrl(u32 l2auxctrl, u32 cpu_midr,
+ u32 cpu_rev_comb, u32 cpu_variant,
+ u32 cpu_rev)
+{
+ omap_smc1(OMAP5_SERVICE_L2ACTLR_SET, l2auxctrl);
+}
diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S
index 9b49ece2d6..5050021e02 100644
--- a/arch/arm/cpu/armv7/start.S
+++ b/arch/arm/cpu/armv7/start.S
@@ -166,7 +166,69 @@ ENTRY(cpu_init_cp15)
mcr p15, 0, r0, c15, c0, 1 @ write diagnostic register
#endif
- mov pc, lr @ back to my caller
+ mov r5, lr @ Store my Caller
+ mrc p15, 0, r1, c0, c0, 0 @ r1 has Read Main ID Register (MIDR)
+ mov r3, r1, lsr #20 @ get variant field
+ and r3, r3, #0xf @ r3 has CPU variant
+ and r4, r1, #0xf @ r4 has CPU revision
+ mov r2, r3, lsl #4 @ shift variant field for combined value
+ orr r2, r4, r2 @ r2 has combined CPU variant + revision
+
+#ifdef CONFIG_ARM_ERRATA_798870
+ cmp r2, #0x30 @ Applies to lower than R3p0
+ bge skip_errata_798870 @ skip if not affected rev
+ cmp r2, #0x20 @ Applies to including and above R2p0
+ blt skip_errata_798870 @ skip if not affected rev
+
+ mrc p15, 1, r0, c15, c0, 0 @ read l2 aux ctrl reg
+ orr r0, r0, #1 << 7 @ Enable hazard-detect timeout
+ push {r1-r5} @ Save the cpu info registers
+ bl v7_arch_cp15_set_l2aux_ctrl
+ isb @ Recommended ISB after l2actlr update
+ pop {r1-r5} @ Restore the cpu info - fall through
+skip_errata_798870:
+#endif
+
+#ifdef CONFIG_ARM_ERRATA_454179
+ cmp r2, #0x21 @ Only on < r2p1
+ bge skip_errata_454179
+
+ mrc p15, 0, r0, c1, c0, 1 @ Read ACR
+ orr r0, r0, #(0x3 << 6) @ Set DBSM(BIT7) and IBE(BIT6) bits
+ push {r1-r5} @ Save the cpu info registers
+ bl v7_arch_cp15_set_acr
+ pop {r1-r5} @ Restore the cpu info - fall through
+
+skip_errata_454179:
+#endif
+
+#ifdef CONFIG_ARM_ERRATA_430973
+ cmp r2, #0x21 @ Only on < r2p1
+ bge skip_errata_430973
+
+ mrc p15, 0, r0, c1, c0, 1 @ Read ACR
+ orr r0, r0, #(0x1 << 6) @ Set IBE bit
+ push {r1-r5} @ Save the cpu info registers
+ bl v7_arch_cp15_set_acr
+ pop {r1-r5} @ Restore the cpu info - fall through
+
+skip_errata_430973:
+#endif
+
+#ifdef CONFIG_ARM_ERRATA_621766
+ cmp r2, #0x21 @ Only on < r2p1
+ bge skip_errata_621766
+
+ mrc p15, 0, r0, c1, c0, 1 @ Read ACR
+ orr r0, r0, #(0x1 << 5) @ Set L1NEON bit
+ push {r1-r5} @ Save the cpu info registers
+ bl v7_arch_cp15_set_acr
+ pop {r1-r5} @ Restore the cpu info - fall through
+
+skip_errata_621766:
+#endif
+
+ mov pc, r5 @ back to my caller
ENDPROC(cpu_init_cp15)
#ifndef CONFIG_SKIP_LOWLEVEL_INIT
diff --git a/arch/arm/include/asm/arch-omap3/omap3.h b/arch/arm/include/asm/arch-omap3/omap.h
index 194b93bf56..194b93bf56 100644
--- a/arch/arm/include/asm/arch-omap3/omap3.h
+++ b/arch/arm/include/asm/arch-omap3/omap.h
diff --git a/arch/arm/include/asm/arch-omap3/sys_proto.h b/arch/arm/include/asm/arch-omap3/sys_proto.h
index bcf92fbe65..3e45ce184b 100644
--- a/arch/arm/include/asm/arch-omap3/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap3/sys_proto.h
@@ -73,6 +73,6 @@ void power_init_r(void);
void dieid_num_r(void);
void get_dieid(u32 *id);
void do_omap3_emu_romcode_call(u32 service_id, u32 parameters);
-void omap3_gp_romcode_call(u32 service_id, u32 parameter);
+void omap3_set_aux_cr_secure(u32 acr);
u32 warm_reset(void);
#endif
diff --git a/arch/arm/include/asm/arch-omap4/sys_proto.h b/arch/arm/include/asm/arch-omap4/sys_proto.h
index e19975efaf..f30f865391 100644
--- a/arch/arm/include/asm/arch-omap4/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap4/sys_proto.h
@@ -37,7 +37,6 @@ void do_set_mux(u32 base, struct pad_conf_entry const *array, int size);
void set_muxconf_regs_essential(void);
u32 wait_on_value(u32, u32, void *, u32);
void sdelay(unsigned long);
-void set_pl310_ctrl_reg(u32 val);
void setup_clocks_for_console(void);
void prcm_init(void);
void bypass_dpll(u32 const base);
@@ -57,4 +56,7 @@ int omap_vc_bypass_send_value(u8 sa, u8 reg_addr, u8 reg_data);
u32 warm_reset(void);
void force_emif_self_refresh(void);
void setup_warmreset_time(void);
+
+#define OMAP4_SERVICE_PL310_CONTROL_REG_SET 0x102
+
#endif
diff --git a/arch/arm/include/asm/arch-omap5/sys_proto.h b/arch/arm/include/asm/arch-omap5/sys_proto.h
index 103830319a..ea84665f5b 100644
--- a/arch/arm/include/asm/arch-omap5/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap5/sys_proto.h
@@ -66,4 +66,7 @@ static inline u32 usec_to_32k(u32 usec)
{
return div_round_up(32768 * usec, 1000000);
}
+
+#define OMAP5_SERVICE_L2ACTLR_SET 0x104
+
#endif
diff --git a/arch/arm/include/asm/armv7.h b/arch/arm/include/asm/armv7.h
index c3cc5088ea..58d8b16121 100644
--- a/arch/arm/include/asm/armv7.h
+++ b/arch/arm/include/asm/armv7.h
@@ -137,6 +137,11 @@ extern char __secure_end[];
#endif /* CONFIG_ARMV7_NONSEC || CONFIG_ARMV7_VIRT */
+void v7_arch_cp15_set_l2aux_ctrl(u32 l2auxctrl, u32 cpu_midr,
+ u32 cpu_rev_comb, u32 cpu_variant,
+ u32 cpu_rev);
+void v7_arch_cp15_set_acr(u32 acr, u32 cpu_midr, u32 cpu_rev_comb,
+ u32 cpu_variant, u32 cpu_rev);
#endif /* ! __ASSEMBLY__ */
#endif
diff --git a/arch/arm/include/asm/omap_common.h b/arch/arm/include/asm/omap_common.h
index 323952f5f1..123c84ff95 100644
--- a/arch/arm/include/asm/omap_common.h
+++ b/arch/arm/include/asm/omap_common.h
@@ -579,6 +579,8 @@ s8 abb_setup_ldovbb(u32 fuse, u32 ldovbb);
void usb_fake_mac_from_die_id(u32 *id);
+void omap_smc1(u32 service, u32 val);
+
/* ABB */
#define OMAP_ABB_NOMINAL_OPP 0
#define OMAP_ABB_FAST_OPP 1
generated by cgit (git 2.34.1) at 2025-01-12 21:16:15 +0000