config ARCH_UNIPHIER
bool "Socionext UniPhier SoCs"
select CLK_UNIPHIER
- select CPU_V7
select SUPPORT_SPL
select SPL
select OF_CONTROL
config ARCH_UNIPHIER_PH1_SLD3
bool "UniPhier PH1-sLD3 SoC"
+ select CPU_V7
config ARCH_UNIPHIER_LD4_SLD8
bool "UniPhier PH1-LD4/PH1-sLD8 SoC"
+ select CPU_V7
config ARCH_UNIPHIER_PH1_PRO4
bool "UniPhier PH1-Pro4 SoC"
+ select CPU_V7
config ARCH_UNIPHIER_PRO5_PXS2_LD6B
bool "UniPhier PH1-Pro5/ProXstream2/PH1-LD6b SoC"
+ select CPU_V7
endchoice
ifdef CONFIG_SPL_BUILD
-obj-y += lowlevel_init.o
-
obj-y += init/ bcu/ memconf/ pll/ early-clk/ early-pinctrl/
obj-$(CONFIG_MICRO_SUPPORT_CARD) += sbc/
-obj-$(CONFIG_DEBUG_LL) += debug_ll.o
-
else
-obj-y += late_lowlevel_init.o
obj-$(CONFIG_BOARD_EARLY_INIT_F) += board_early_init_f.o
obj-$(CONFIG_DISPLAY_CPUINFO) += cpu_info.o
obj-$(CONFIG_MISC_INIT_F) += print_misc_info.o
obj-$(CONFIG_BOARD_EARLY_INIT_R) += board_early_init_r.o
obj-$(CONFIG_BOARD_LATE_INIT) += board_late_init.o
obj-y += reset.o
-obj-y += cache_uniphier.o
obj-y += pinctrl/ clk/
endif
-obj-y += timer.o
obj-y += boards.o
obj-y += soc_info.o
obj-y += boot-mode/
obj-y += dram/
obj-$(CONFIG_MICRO_SUPPORT_CARD) += micro-support-card.o
+
+obj-$(CONFIG_CPU_V7) += arm32/
+++ /dev/null
-/*
- * Copyright (C) 2011-2014 Panasonic Corporation
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#ifndef ARCH_ARM_MPCORE_H
-#define ARCH_ARM_MPCORE_H
-
-/* Snoop Control Unit */
-#define SCU_OFFSET 0x00
-
-/* SCU Control Register */
-#define SCU_CTRL 0x00
-/* SCU Configuration Register */
-#define SCU_CONF 0x04
-/* SCU CPU Power Status Register */
-#define SCU_PWR_STATUS 0x08
-/* SCU Invalidate All Registers in Secure State */
-#define SCU_INV_ALL 0x0C
-/* SCU Filtering Start Address Register */
-#define SCU_FILTER_START 0x40
-/* SCU Filtering End Address Register */
-#define SCU_FILTER_END 0x44
-/* SCU Access Control Register */
-#define SCU_SAC 0x50
-/* SCU Non-secure Access Control Register */
-#define SCU_SNSAC 0x54
-
-/* Global Timer */
-#define GLOBAL_TIMER_OFFSET 0x200
-
-/* Global Timer Counter Registers */
-#define GTIMER_CNT_L 0x00
-#define GTIMER_CNT_H 0x04
-/* Global Timer Control Register */
-#define GTIMER_CTRL 0x08
-/* Global Timer Interrupt Status Register */
-#define GTIMER_STAT 0x0C
-/* Comparator Value Registers */
-#define GTIMER_CMP_L 0x10
-#define GTIMER_CMP_H 0x14
-/* Auto-increment Register */
-#define GTIMER_INC 0x18
-
-#endif /* ARCH_ARM_MPCORE_H */
--- /dev/null
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+ifdef CONFIG_SPL_BUILD
+obj-y += lowlevel_init.o
+obj-$(CONFIG_DEBUG_LL) += debug_ll.o
+else
+obj-y += late_lowlevel_init.o
+obj-y += cache_uniphier.o
+endif
+
+obj-y += timer.o
--- /dev/null
+/*
+ * Copyright (C) 2011-2014 Panasonic Corporation
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef ARCH_ARM_MPCORE_H
+#define ARCH_ARM_MPCORE_H
+
+/* Snoop Control Unit */
+#define SCU_OFFSET 0x00
+
+/* SCU Control Register */
+#define SCU_CTRL 0x00
+/* SCU Configuration Register */
+#define SCU_CONF 0x04
+/* SCU CPU Power Status Register */
+#define SCU_PWR_STATUS 0x08
+/* SCU Invalidate All Registers in Secure State */
+#define SCU_INV_ALL 0x0C
+/* SCU Filtering Start Address Register */
+#define SCU_FILTER_START 0x40
+/* SCU Filtering End Address Register */
+#define SCU_FILTER_END 0x44
+/* SCU Access Control Register */
+#define SCU_SAC 0x50
+/* SCU Non-secure Access Control Register */
+#define SCU_SNSAC 0x54
+
+/* Global Timer */
+#define GLOBAL_TIMER_OFFSET 0x200
+
+/* Global Timer Counter Registers */
+#define GTIMER_CNT_L 0x00
+#define GTIMER_CNT_H 0x04
+/* Global Timer Control Register */
+#define GTIMER_CTRL 0x08
+/* Global Timer Interrupt Status Register */
+#define GTIMER_STAT 0x0C
+/* Comparator Value Registers */
+#define GTIMER_CMP_L 0x10
+#define GTIMER_CMP_H 0x14
+/* Auto-increment Register */
+#define GTIMER_INC 0x18
+
+#endif /* ARCH_ARM_MPCORE_H */
--- /dev/null
+/*
+ * Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <linux/io.h>
+#include <asm/armv7.h>
+
+#include "ssc-regs.h"
+
+#ifdef CONFIG_UNIPHIER_L2CACHE_ON
+static void uniphier_cache_sync(void)
+{
+ writel(SSCOPE_CM_SYNC, SSCOPE); /* drain internal buffers */
+ readl(SSCOPE); /* need a read back to confirm */
+}
+
+static void uniphier_cache_maint_all(u32 operation)
+{
+ /* try until the command is successfully set */
+ do {
+ writel(SSCOQM_S_ALL | SSCOQM_CE | operation, SSCOQM);
+ } while (readl(SSCOPPQSEF) & (SSCOPPQSEF_FE | SSCOPPQSEF_OE));
+
+ /* wait until the operation is completed */
+ while (readl(SSCOLPQS) != SSCOLPQS_EF)
+ ;
+
+ /* clear the complete notification flag */
+ writel(SSCOLPQS_EF, SSCOLPQS);
+
+ uniphier_cache_sync();
+}
+
+void v7_outer_cache_flush_all(void)
+{
+ uniphier_cache_maint_all(SSCOQM_CM_WB_INV);
+}
+
+void v7_outer_cache_inval_all(void)
+{
+ uniphier_cache_maint_all(SSCOQM_CM_INV);
+}
+
+static void __uniphier_cache_maint_range(u32 start, u32 size, u32 operation)
+{
+ /* try until the command is successfully set */
+ do {
+ writel(SSCOQM_S_ADDRESS | SSCOQM_CE | operation, SSCOQM);
+ writel(start, SSCOQAD);
+ writel(size, SSCOQSZ);
+
+ } while (readl(SSCOPPQSEF) & (SSCOPPQSEF_FE | SSCOPPQSEF_OE));
+
+ /* wait until the operation is completed */
+ while (readl(SSCOLPQS) != SSCOLPQS_EF)
+ ;
+
+ /* clear the complete notification flag */
+ writel(SSCOLPQS_EF, SSCOLPQS);
+}
+
+static void uniphier_cache_maint_range(u32 start, u32 end, u32 operation)
+{
+ u32 size;
+
+ /*
+ * If start address is not aligned to cache-line,
+ * do cache operation for the first cache-line
+ */
+ start = start & ~(SSC_LINE_SIZE - 1);
+
+ size = end - start;
+
+ if (unlikely(size >= (u32)(-SSC_LINE_SIZE))) {
+ /* this means cache operation for all range */
+ uniphier_cache_maint_all(operation);
+ return;
+ }
+
+ /*
+ * If end address is not aligned to cache-line,
+ * do cache operation for the last cache-line
+ */
+ size = ALIGN(size, SSC_LINE_SIZE);
+
+ while (size) {
+ u32 chunk_size = size > SSC_RANGE_OP_MAX_SIZE ?
+ SSC_RANGE_OP_MAX_SIZE : size;
+ __uniphier_cache_maint_range(start, chunk_size, operation);
+
+ start += chunk_size;
+ size -= chunk_size;
+ }
+
+ uniphier_cache_sync();
+}
+
+void v7_outer_cache_flush_range(u32 start, u32 end)
+{
+ uniphier_cache_maint_range(start, end, SSCOQM_CM_WB_INV);
+}
+
+void v7_outer_cache_inval_range(u32 start, u32 end)
+{
+ if (start & (SSC_LINE_SIZE - 1)) {
+ start &= ~(SSC_LINE_SIZE - 1);
+ __uniphier_cache_maint_range(start, SSC_LINE_SIZE,
+ SSCOQM_CM_WB_INV);
+ start += SSC_LINE_SIZE;
+ }
+
+ if (start >= end) {
+ uniphier_cache_sync();
+ return;
+ }
+
+ if (end & (SSC_LINE_SIZE - 1)) {
+ end &= ~(SSC_LINE_SIZE - 1);
+ __uniphier_cache_maint_range(end, SSC_LINE_SIZE,
+ SSCOQM_CM_WB_INV);
+ }
+
+ if (start >= end) {
+ uniphier_cache_sync();
+ return;
+ }
+
+ uniphier_cache_maint_range(start, end, SSCOQM_CM_INV);
+}
+
+void v7_outer_cache_enable(void)
+{
+ u32 tmp;
+
+ writel(U32_MAX, SSCLPDAWCR); /* activate all ways */
+ tmp = readl(SSCC);
+ tmp |= SSCC_ON;
+ writel(tmp, SSCC);
+}
+#endif
+
+void v7_outer_cache_disable(void)
+{
+ u32 tmp;
+ tmp = readl(SSCC);
+ tmp &= ~SSCC_ON;
+ writel(tmp, SSCC);
+}
+
+void enable_caches(void)
+{
+ dcache_enable();
+}
--- /dev/null
+/*
+ * On-chip UART initializaion for low-level debugging
+ *
+ * Copyright (C) 2014-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <linux/serial_reg.h>
+#include <linux/linkage.h>
+
+#include "../bcu/bcu-regs.h"
+#include "../sc-regs.h"
+#include "../sg-regs.h"
+
+#if !defined(CONFIG_DEBUG_SEMIHOSTING)
+#include CONFIG_DEBUG_LL_INCLUDE
+#endif
+
+#define BAUDRATE 115200
+#define DIV_ROUND(x, d) (((x) + ((d) / 2)) / (d))
+
+ENTRY(debug_ll_init)
+ ldr r0, =SG_REVISION
+ ldr r1, [r0]
+ and r1, r1, #SG_REVISION_TYPE_MASK
+ mov r1, r1, lsr #SG_REVISION_TYPE_SHIFT
+
+#if defined(CONFIG_ARCH_UNIPHIER_PH1_SLD3)
+#define PH1_SLD3_UART_CLK 36864000
+ cmp r1, #0x25
+ bne ph1_sld3_end
+
+ sg_set_pinsel 64, 1, 4, 4, r0, r1 @ TXD0 -> TXD0
+
+ ldr r0, =BCSCR5
+ ldr r1, =0x24440000
+ str r1, [r0]
+
+ ldr r0, =SC_CLKCTRL
+ ldr r1, [r0]
+ orr r1, r1, #SC_CLKCTRL_CEN_PERI
+ str r1, [r0]
+
+ ldr r3, =DIV_ROUND(PH1_SLD3_UART_CLK, 16 * BAUDRATE)
+
+ b init_uart
+ph1_sld3_end:
+#endif
+#if defined(CONFIG_ARCH_UNIPHIER_PH1_LD4)
+#define PH1_LD4_UART_CLK 36864000
+ cmp r1, #0x26
+ bne ph1_ld4_end
+
+ ldr r0, =SG_IECTRL
+ ldr r1, [r0]
+ orr r1, r1, #1
+ str r1, [r0]
+
+ sg_set_pinsel 88, 1, 8, 4, r0, r1 @ HSDOUT6 -> TXD0
+
+ ldr r3, =DIV_ROUND(PH1_LD4_UART_CLK, 16 * BAUDRATE)
+
+ b init_uart
+ph1_ld4_end:
+#endif
+#if defined(CONFIG_ARCH_UNIPHIER_PH1_PRO4)
+#define PH1_PRO4_UART_CLK 73728000
+ cmp r1, #0x28
+ bne ph1_pro4_end
+
+ sg_set_pinsel 128, 0, 4, 8, r0, r1 @ TXD0 -> TXD0
+
+ ldr r0, =SG_LOADPINCTRL
+ mov r1, #1
+ str r1, [r0]
+
+ ldr r0, =SC_CLKCTRL
+ ldr r1, [r0]
+ orr r1, r1, #SC_CLKCTRL_CEN_PERI
+ str r1, [r0]
+
+ ldr r3, =DIV_ROUND(PH1_PRO4_UART_CLK, 16 * BAUDRATE)
+
+ b init_uart
+ph1_pro4_end:
+#endif
+#if defined(CONFIG_ARCH_UNIPHIER_PH1_SLD8)
+#define PH1_SLD8_UART_CLK 80000000
+ cmp r1, #0x29
+ bne ph1_sld8_end
+
+ ldr r0, =SG_IECTRL
+ ldr r1, [r0]
+ orr r1, r1, #1
+ str r1, [r0]
+
+ sg_set_pinsel 70, 3, 8, 4, r0, r1 @ HSDOUT0 -> TXD0
+
+ ldr r3, =DIV_ROUND(PH1_SLD8_UART_CLK, 16 * BAUDRATE)
+
+ b init_uart
+ph1_sld8_end:
+#endif
+#if defined(CONFIG_ARCH_UNIPHIER_PH1_PRO5)
+#define PH1_PRO5_UART_CLK 73728000
+ cmp r1, #0x2A
+ bne ph1_pro5_end
+
+ sg_set_pinsel 47, 0, 4, 8, r0, r1 @ TXD0 -> TXD0
+ sg_set_pinsel 49, 0, 4, 8, r0, r1 @ TXD1 -> TXD1
+ sg_set_pinsel 51, 0, 4, 8, r0, r1 @ TXD2 -> TXD2
+ sg_set_pinsel 53, 0, 4, 8, r0, r1 @ TXD3 -> TXD3
+
+ ldr r0, =SG_LOADPINCTRL
+ mov r1, #1
+ str r1, [r0]
+
+ ldr r0, =SC_CLKCTRL
+ ldr r1, [r0]
+ orr r1, r1, #SC_CLKCTRL_CEN_PERI
+ str r1, [r0]
+
+ ldr r3, =DIV_ROUND(PH1_PRO5_UART_CLK, 16 * BAUDRATE)
+
+ b init_uart
+ph1_pro5_end:
+#endif
+#if defined(CONFIG_ARCH_UNIPHIER_PROXSTREAM2)
+#define PROXSTREAM2_UART_CLK 88900000
+ cmp r1, #0x2E
+ bne proxstream2_end
+
+ ldr r0, =SG_IECTRL
+ ldr r1, [r0]
+ orr r1, r1, #1
+ str r1, [r0]
+
+ sg_set_pinsel 217, 8, 8, 4, r0, r1 @ TXD0 -> TXD0
+ sg_set_pinsel 115, 8, 8, 4, r0, r1 @ TXD1 -> TXD1
+ sg_set_pinsel 113, 8, 8, 4, r0, r1 @ TXD2 -> TXD2
+ sg_set_pinsel 219, 8, 8, 4, r0, r1 @ TXD3 -> TXD3
+
+ ldr r0, =SC_CLKCTRL
+ ldr r1, [r0]
+ orr r1, r1, #SC_CLKCTRL_CEN_PERI
+ str r1, [r0]
+
+ ldr r3, =DIV_ROUND(PROXSTREAM2_UART_CLK, 16 * BAUDRATE)
+
+ b init_uart
+proxstream2_end:
+#endif
+#if defined(CONFIG_ARCH_UNIPHIER_PH1_LD6B)
+#define PH1_LD6B_UART_CLK 88900000
+ cmp r1, #0x2F
+ bne ph1_ld6b_end
+
+ ldr r0, =SG_IECTRL
+ ldr r1, [r0]
+ orr r1, r1, #1
+ str r1, [r0]
+
+ sg_set_pinsel 135, 3, 8, 4, r0, r1 @ PORT10 -> TXD0
+ sg_set_pinsel 115, 0, 8, 4, r0, r1 @ TXD1 -> TXD1
+ sg_set_pinsel 113, 2, 8, 4, r0, r1 @ SBO0 -> TXD2
+
+ ldr r0, =SC_CLKCTRL
+ ldr r1, [r0]
+ orr r1, r1, #SC_CLKCTRL_CEN_PERI
+ str r1, [r0]
+
+ ldr r3, =DIV_ROUND(PH1_LD6B_UART_CLK, 16 * BAUDRATE)
+
+ b init_uart
+ph1_ld6b_end:
+#endif
+
+init_uart:
+ addruart r0, r1, r2
+ mov r1, #UART_LCR_WLEN8 << 8
+ str r1, [r0, #0x10]
+ str r3, [r0, #0x24]
+
+ mov pc, lr
+ENDPROC(debug_ll_init)
--- /dev/null
+/*
+ * Copyright (C) 2015 Socionext Inc.
+ * Author: Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <linux/linkage.h>
+
+#include "ssc-regs.h"
+
+ENTRY(lowlevel_init)
+ ldr r1, = SSCC
+ ldr r0, [r1]
+ bic r0, r0, #SSCC_ON @ L2 disable
+ str r0, [r1]
+ mov pc, lr
+ENDPROC(lowlevel_init)
--- /dev/null
+/*
+ * Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <config.h>
+#include <linux/linkage.h>
+#include <linux/sizes.h>
+#include <asm/system.h>
+
+#include "ssc-regs.h"
+
+ENTRY(lowlevel_init)
+ mov r8, lr @ persevere link reg across call
+
+ /*
+ * The UniPhier Boot ROM loads SPL code to the L2 cache.
+ * But CPUs can only do instruction fetch now because start.S has
+ * cleared C and M bits.
+ * First we need to turn on MMU and Dcache again to get back
+ * data access to L2.
+ */
+ mrc p15, 0, r0, c1, c0, 0 @ SCTLR (System Control Register)
+ orr r0, r0, #(CR_C | CR_M) @ enable MMU and Dcache
+ mcr p15, 0, r0, c1, c0, 0
+
+#ifdef CONFIG_DEBUG_LL
+ bl debug_ll_init
+#endif
+
+ bl setup_init_ram @ RAM area for stack and page talbe
+
+ /*
+ * Now we are using the page table embedded in the Boot ROM.
+ * It is not handy since it is not a straight mapped table for sLD3.
+ * Also, the access to the external bus is prohibited. What we need
+ * to do next is to create a page table and switch over to it.
+ */
+ bl create_page_table
+ bl v7_flush_dcache_all
+
+ /* Disable MMU and Dcache before switching Page Table */
+ mrc p15, 0, r0, c1, c0, 0 @ SCTLR (System Control Register)
+ bic r0, r0, #(CR_C | CR_M) @ disable MMU and Dcache
+ mcr p15, 0, r0, c1, c0, 0
+
+ bl enable_mmu
+
+ mov lr, r8 @ restore link
+ mov pc, lr @ back to my caller
+ENDPROC(lowlevel_init)
+
+ENTRY(enable_mmu)
+ mrc p15, 0, r0, c2, c0, 2 @ TTBCR (Translation Table Base Control Register)
+ bic r0, r0, #0x37
+ orr r0, r0, #0x20 @ disable TTBR1
+ mcr p15, 0, r0, c2, c0, 2
+
+ orr r0, r12, #0x8 @ Outer Cacheability for table walks: WBWA
+ mcr p15, 0, r0, c2, c0, 0 @ TTBR0
+
+ mov r0, #0
+ mcr p15, 0, r0, c8, c7, 0 @ invalidate TLBs
+
+ mov r0, #-1 @ manager for all domains (No permission check)
+ mcr p15, 0, r0, c3, c0, 0 @ DACR (Domain Access Control Register)
+
+ dsb
+ isb
+ /*
+ * MMU on:
+ * TLBs was already invalidated in "../start.S"
+ * So, we don't need to invalidate it here.
+ */
+ mrc p15, 0, r0, c1, c0, 0 @ SCTLR (System Control Register)
+ orr r0, r0, #(CR_C | CR_M) @ MMU and Dcache enable
+ mcr p15, 0, r0, c1, c0, 0
+
+ mov pc, lr
+ENDPROC(enable_mmu)
+
+/*
+ * For PH1-Pro4 or older SoCs, the size of WAY is 32KB.
+ * It is large enough for tmp RAM.
+ */
+#define BOOT_RAM_SIZE (SZ_32K)
+#define BOOT_RAM_BASE ((CONFIG_SPL_STACK) - (BOOT_RAM_SIZE))
+#define BOOT_WAY_BITS (0x00000100) /* way 8 */
+
+ENTRY(setup_init_ram)
+ /*
+ * Touch to zero for the boot way
+ */
+0:
+ /*
+ * set SSCOQM, SSCOQAD, SSCOQSZ, SSCOQWN in this order
+ */
+ ldr r0, = 0x00408006 @ touch to zero with address range
+ ldr r1, = SSCOQM
+ str r0, [r1]
+ ldr r0, = BOOT_RAM_BASE
+ ldr r1, = SSCOQAD
+ str r0, [r1]
+ ldr r0, = BOOT_RAM_SIZE
+ ldr r1, = SSCOQSZ
+ str r0, [r1]
+ ldr r0, = BOOT_WAY_BITS
+ ldr r1, = SSCOQWN
+ str r0, [r1]
+ ldr r1, = SSCOPPQSEF
+ ldr r0, [r1]
+ cmp r0, #0 @ check if the command is successfully set
+ bne 0b @ try again if an error occurs
+
+ ldr r1, = SSCOLPQS
+1:
+ ldr r0, [r1]
+ cmp r0, #0x4
+ bne 1b @ wait until the operation is completed
+ str r0, [r1] @ clear the complete notification flag
+
+ mov pc, lr
+ENDPROC(setup_init_ram)
+
+#define DEVICE 0x00002002 /* Non-shareable Device */
+#define NORMAL 0x0000000e /* Normal Memory Write-Back, No Write-Allocate */
+
+ENTRY(create_page_table)
+ ldr r0, = DEVICE
+ ldr r1, = BOOT_RAM_BASE
+ mov r12, r1 @ r12 is preserved during D-cache flush
+0: str r0, [r1], #4 @ specify all the sections as Device
+ adds r0, r0, #0x00100000
+ bcc 0b
+
+ ldr r0, = NORMAL
+ str r0, [r12] @ mark the first section as Normal
+ add r0, r0, #0x00100000
+ str r0, [r12, #4] @ mark the second section as Normal
+ mov pc, lr
+ENDPROC(create_page_table)
+
+/* We don't use Thumb instructions for now */
+#define ARM(x...) x
+#define THUMB(x...)
+
+/*
+ * v7_flush_dcache_all()
+ *
+ * Flush the whole D-cache.
+ *
+ * Corrupted registers: r0-r7, r9-r11 (r6 only in Thumb mode)
+ *
+ * - mm - mm_struct describing address space
+ *
+ * Note: copied from arch/arm/mm/cache-v7.S of Linux 4.4
+ */
+ENTRY(v7_flush_dcache_all)
+ dmb @ ensure ordering with previous memory accesses
+ mrc p15, 1, r0, c0, c0, 1 @ read clidr
+ mov r3, r0, lsr #23 @ move LoC into position
+ ands r3, r3, #7 << 1 @ extract LoC*2 from clidr
+ beq finished @ if loc is 0, then no need to clean
+start_flush_levels:
+ mov r10, #0 @ start clean at cache level 0
+flush_levels:
+ add r2, r10, r10, lsr #1 @ work out 3x current cache level
+ mov r1, r0, lsr r2 @ extract cache type bits from clidr
+ and r1, r1, #7 @ mask of the bits for current cache only
+ cmp r1, #2 @ see what cache we have at this level
+ blt skip @ skip if no cache, or just i-cache
+ mcr p15, 2, r10, c0, c0, 0 @ select current cache level in cssr
+ isb @ isb to sych the new cssr&csidr
+ mrc p15, 1, r1, c0, c0, 0 @ read the new csidr
+ and r2, r1, #7 @ extract the length of the cache lines
+ add r2, r2, #4 @ add 4 (line length offset)
+ movw r4, #0x3ff
+ ands r4, r4, r1, lsr #3 @ find maximum number on the way size
+ clz r5, r4 @ find bit position of way size increment
+ movw r7, #0x7fff
+ ands r7, r7, r1, lsr #13 @ extract max number of the index size
+loop1:
+ mov r9, r7 @ create working copy of max index
+loop2:
+ ARM( orr r11, r10, r4, lsl r5 ) @ factor way and cache number into r11
+ THUMB( lsl r6, r4, r5 )
+ THUMB( orr r11, r10, r6 ) @ factor way and cache number into r11
+ ARM( orr r11, r11, r9, lsl r2 ) @ factor index number into r11
+ THUMB( lsl r6, r9, r2 )
+ THUMB( orr r11, r11, r6 ) @ factor index number into r11
+ mcr p15, 0, r11, c7, c14, 2 @ clean & invalidate by set/way
+ subs r9, r9, #1 @ decrement the index
+ bge loop2
+ subs r4, r4, #1 @ decrement the way
+ bge loop1
+skip:
+ add r10, r10, #2 @ increment cache number
+ cmp r3, r10
+ bgt flush_levels
+finished:
+ mov r10, #0 @ swith back to cache level 0
+ mcr p15, 2, r10, c0, c0, 0 @ select current cache level in cssr
+ dsb st
+ isb
+ mov pc, lr
+ENDPROC(v7_flush_dcache_all)
--- /dev/null
+/*
+ * UniPhier System Cache (L2 Cache) registers
+ *
+ * Copyright (C) 2011-2014 Panasonic Corporation
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef ARCH_SSC_REGS_H
+#define ARCH_SSC_REGS_H
+
+#define SSCC 0x500c0000
+#define SSCC_BST (0x1 << 20)
+#define SSCC_ACT (0x1 << 19)
+#define SSCC_WTG (0x1 << 18)
+#define SSCC_PRD (0x1 << 17)
+#define SSCC_WBWA (0x1 << 16)
+#define SSCC_EX (0x1 << 13)
+#define SSCC_ON (0x1 << 0)
+
+#define SSCLPDAWCR 0x500c0030
+
+#define SSCOPE 0x506c0244
+#define SSCOPE_CM_SYNC 0x00000008
+
+#define SSCOQM 0x506c0248
+#define SSCOQM_TID_MASK (0x3 << 21)
+#define SSCOQM_TID_BY_WAY (0x2 << 21)
+#define SSCOQM_TID_BY_INST_WAY (0x1 << 21)
+#define SSCOQM_TID_BY_DATA_WAY (0x0 << 21)
+#define SSCOQM_S_MASK (0x3 << 17)
+#define SSCOQM_S_WAY (0x2 << 17)
+#define SSCOQM_S_ALL (0x1 << 17)
+#define SSCOQM_S_ADDRESS (0x0 << 17)
+#define SSCOQM_CE (0x1 << 15)
+#define SSCOQM_CW (0x1 << 14)
+#define SSCOQM_CM_MASK (0x7)
+#define SSCOQM_CM_DIRT_TOUCH (0x7)
+#define SSCOQM_CM_ZERO_TOUCH (0x6)
+#define SSCOQM_CM_NORM_TOUCH (0x5)
+#define SSCOQM_CM_PREF_FETCH (0x4)
+#define SSCOQM_CM_SSC_FETCH (0x3)
+#define SSCOQM_CM_WB_INV (0x2)
+#define SSCOQM_CM_WB (0x1)
+#define SSCOQM_CM_INV (0x0)
+
+#define SSCOQAD 0x506c024c
+#define SSCOQSZ 0x506c0250
+#define SSCOQWN 0x506c0258
+
+#define SSCOPPQSEF 0x506c025c
+#define SSCOPPQSEF_FE (0x1 << 1)
+#define SSCOPPQSEF_OE (0x1 << 0)
+
+#define SSCOLPQS 0x506c0260
+#define SSCOLPQS_EF (0x1 << 2)
+#define SSCOLPQS_EST (0x1 << 1)
+#define SSCOLPQS_QST (0x1 << 0)
+
+#define SSCOQCE0 0x506c0270
+
+#define SSC_LINE_SIZE 128
+#define SSC_RANGE_OP_MAX_SIZE (0x00400000 - (SSC_LINE_SIZE))
+
+#endif /* ARCH_SSC_REGS_H */
--- /dev/null
+/*
+ * Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <linux/io.h>
+
+#include "arm-mpcore.h"
+
+#define PERIPHCLK (50 * 1000 * 1000) /* 50 MHz */
+#define PRESCALER ((PERIPHCLK) / (CONFIG_SYS_TIMER_RATE) - 1)
+
+static void *get_global_timer_base(void)
+{
+ void *val;
+
+ asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (val) : : "memory");
+
+ return val + GLOBAL_TIMER_OFFSET;
+}
+
+unsigned long timer_read_counter(void)
+{
+ /*
+ * ARM 64bit Global Timer is too much for our purpose.
+ * We use only lower 32 bit of the timer counter.
+ */
+ return readl(get_global_timer_base() + GTIMER_CNT_L);
+}
+
+int timer_init(void)
+{
+ /* enable timer */
+ writel(PRESCALER << 8 | 1, get_global_timer_base() + GTIMER_CTRL);
+
+ return 0;
+}
+++ /dev/null
-/*
- * Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <linux/io.h>
-#include <asm/armv7.h>
-
-#include "ssc-regs.h"
-
-#ifdef CONFIG_UNIPHIER_L2CACHE_ON
-static void uniphier_cache_sync(void)
-{
- writel(SSCOPE_CM_SYNC, SSCOPE); /* drain internal buffers */
- readl(SSCOPE); /* need a read back to confirm */
-}
-
-static void uniphier_cache_maint_all(u32 operation)
-{
- /* try until the command is successfully set */
- do {
- writel(SSCOQM_S_ALL | SSCOQM_CE | operation, SSCOQM);
- } while (readl(SSCOPPQSEF) & (SSCOPPQSEF_FE | SSCOPPQSEF_OE));
-
- /* wait until the operation is completed */
- while (readl(SSCOLPQS) != SSCOLPQS_EF)
- ;
-
- /* clear the complete notification flag */
- writel(SSCOLPQS_EF, SSCOLPQS);
-
- uniphier_cache_sync();
-}
-
-void v7_outer_cache_flush_all(void)
-{
- uniphier_cache_maint_all(SSCOQM_CM_WB_INV);
-}
-
-void v7_outer_cache_inval_all(void)
-{
- uniphier_cache_maint_all(SSCOQM_CM_INV);
-}
-
-static void __uniphier_cache_maint_range(u32 start, u32 size, u32 operation)
-{
- /* try until the command is successfully set */
- do {
- writel(SSCOQM_S_ADDRESS | SSCOQM_CE | operation, SSCOQM);
- writel(start, SSCOQAD);
- writel(size, SSCOQSZ);
-
- } while (readl(SSCOPPQSEF) & (SSCOPPQSEF_FE | SSCOPPQSEF_OE));
-
- /* wait until the operation is completed */
- while (readl(SSCOLPQS) != SSCOLPQS_EF)
- ;
-
- /* clear the complete notification flag */
- writel(SSCOLPQS_EF, SSCOLPQS);
-}
-
-static void uniphier_cache_maint_range(u32 start, u32 end, u32 operation)
-{
- u32 size;
-
- /*
- * If start address is not aligned to cache-line,
- * do cache operation for the first cache-line
- */
- start = start & ~(SSC_LINE_SIZE - 1);
-
- size = end - start;
-
- if (unlikely(size >= (u32)(-SSC_LINE_SIZE))) {
- /* this means cache operation for all range */
- uniphier_cache_maint_all(operation);
- return;
- }
-
- /*
- * If end address is not aligned to cache-line,
- * do cache operation for the last cache-line
- */
- size = ALIGN(size, SSC_LINE_SIZE);
-
- while (size) {
- u32 chunk_size = size > SSC_RANGE_OP_MAX_SIZE ?
- SSC_RANGE_OP_MAX_SIZE : size;
- __uniphier_cache_maint_range(start, chunk_size, operation);
-
- start += chunk_size;
- size -= chunk_size;
- }
-
- uniphier_cache_sync();
-}
-
-void v7_outer_cache_flush_range(u32 start, u32 end)
-{
- uniphier_cache_maint_range(start, end, SSCOQM_CM_WB_INV);
-}
-
-void v7_outer_cache_inval_range(u32 start, u32 end)
-{
- if (start & (SSC_LINE_SIZE - 1)) {
- start &= ~(SSC_LINE_SIZE - 1);
- __uniphier_cache_maint_range(start, SSC_LINE_SIZE,
- SSCOQM_CM_WB_INV);
- start += SSC_LINE_SIZE;
- }
-
- if (start >= end) {
- uniphier_cache_sync();
- return;
- }
-
- if (end & (SSC_LINE_SIZE - 1)) {
- end &= ~(SSC_LINE_SIZE - 1);
- __uniphier_cache_maint_range(end, SSC_LINE_SIZE,
- SSCOQM_CM_WB_INV);
- }
-
- if (start >= end) {
- uniphier_cache_sync();
- return;
- }
-
- uniphier_cache_maint_range(start, end, SSCOQM_CM_INV);
-}
-
-void v7_outer_cache_enable(void)
-{
- u32 tmp;
-
- writel(U32_MAX, SSCLPDAWCR); /* activate all ways */
- tmp = readl(SSCC);
- tmp |= SSCC_ON;
- writel(tmp, SSCC);
-}
-#endif
-
-void v7_outer_cache_disable(void)
-{
- u32 tmp;
- tmp = readl(SSCC);
- tmp &= ~SSCC_ON;
- writel(tmp, SSCC);
-}
-
-void enable_caches(void)
-{
- dcache_enable();
-}
+++ /dev/null
-/*
- * On-chip UART initializaion for low-level debugging
- *
- * Copyright (C) 2014-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <linux/serial_reg.h>
-#include <linux/linkage.h>
-
-#include "bcu/bcu-regs.h"
-#include "sc-regs.h"
-#include "sg-regs.h"
-
-#if !defined(CONFIG_DEBUG_SEMIHOSTING)
-#include CONFIG_DEBUG_LL_INCLUDE
-#endif
-
-#define BAUDRATE 115200
-#define DIV_ROUND(x, d) (((x) + ((d) / 2)) / (d))
-
-ENTRY(debug_ll_init)
- ldr r0, =SG_REVISION
- ldr r1, [r0]
- and r1, r1, #SG_REVISION_TYPE_MASK
- mov r1, r1, lsr #SG_REVISION_TYPE_SHIFT
-
-#if defined(CONFIG_ARCH_UNIPHIER_PH1_SLD3)
-#define PH1_SLD3_UART_CLK 36864000
- cmp r1, #0x25
- bne ph1_sld3_end
-
- sg_set_pinsel 64, 1, 4, 4, r0, r1 @ TXD0 -> TXD0
-
- ldr r0, =BCSCR5
- ldr r1, =0x24440000
- str r1, [r0]
-
- ldr r0, =SC_CLKCTRL
- ldr r1, [r0]
- orr r1, r1, #SC_CLKCTRL_CEN_PERI
- str r1, [r0]
-
- ldr r3, =DIV_ROUND(PH1_SLD3_UART_CLK, 16 * BAUDRATE)
-
- b init_uart
-ph1_sld3_end:
-#endif
-#if defined(CONFIG_ARCH_UNIPHIER_PH1_LD4)
-#define PH1_LD4_UART_CLK 36864000
- cmp r1, #0x26
- bne ph1_ld4_end
-
- ldr r0, =SG_IECTRL
- ldr r1, [r0]
- orr r1, r1, #1
- str r1, [r0]
-
- sg_set_pinsel 88, 1, 8, 4, r0, r1 @ HSDOUT6 -> TXD0
-
- ldr r3, =DIV_ROUND(PH1_LD4_UART_CLK, 16 * BAUDRATE)
-
- b init_uart
-ph1_ld4_end:
-#endif
-#if defined(CONFIG_ARCH_UNIPHIER_PH1_PRO4)
-#define PH1_PRO4_UART_CLK 73728000
- cmp r1, #0x28
- bne ph1_pro4_end
-
- sg_set_pinsel 128, 0, 4, 8, r0, r1 @ TXD0 -> TXD0
-
- ldr r0, =SG_LOADPINCTRL
- mov r1, #1
- str r1, [r0]
-
- ldr r0, =SC_CLKCTRL
- ldr r1, [r0]
- orr r1, r1, #SC_CLKCTRL_CEN_PERI
- str r1, [r0]
-
- ldr r3, =DIV_ROUND(PH1_PRO4_UART_CLK, 16 * BAUDRATE)
-
- b init_uart
-ph1_pro4_end:
-#endif
-#if defined(CONFIG_ARCH_UNIPHIER_PH1_SLD8)
-#define PH1_SLD8_UART_CLK 80000000
- cmp r1, #0x29
- bne ph1_sld8_end
-
- ldr r0, =SG_IECTRL
- ldr r1, [r0]
- orr r1, r1, #1
- str r1, [r0]
-
- sg_set_pinsel 70, 3, 8, 4, r0, r1 @ HSDOUT0 -> TXD0
-
- ldr r3, =DIV_ROUND(PH1_SLD8_UART_CLK, 16 * BAUDRATE)
-
- b init_uart
-ph1_sld8_end:
-#endif
-#if defined(CONFIG_ARCH_UNIPHIER_PH1_PRO5)
-#define PH1_PRO5_UART_CLK 73728000
- cmp r1, #0x2A
- bne ph1_pro5_end
-
- sg_set_pinsel 47, 0, 4, 8, r0, r1 @ TXD0 -> TXD0
- sg_set_pinsel 49, 0, 4, 8, r0, r1 @ TXD1 -> TXD1
- sg_set_pinsel 51, 0, 4, 8, r0, r1 @ TXD2 -> TXD2
- sg_set_pinsel 53, 0, 4, 8, r0, r1 @ TXD3 -> TXD3
-
- ldr r0, =SG_LOADPINCTRL
- mov r1, #1
- str r1, [r0]
-
- ldr r0, =SC_CLKCTRL
- ldr r1, [r0]
- orr r1, r1, #SC_CLKCTRL_CEN_PERI
- str r1, [r0]
-
- ldr r3, =DIV_ROUND(PH1_PRO5_UART_CLK, 16 * BAUDRATE)
-
- b init_uart
-ph1_pro5_end:
-#endif
-#if defined(CONFIG_ARCH_UNIPHIER_PROXSTREAM2)
-#define PROXSTREAM2_UART_CLK 88900000
- cmp r1, #0x2E
- bne proxstream2_end
-
- ldr r0, =SG_IECTRL
- ldr r1, [r0]
- orr r1, r1, #1
- str r1, [r0]
-
- sg_set_pinsel 217, 8, 8, 4, r0, r1 @ TXD0 -> TXD0
- sg_set_pinsel 115, 8, 8, 4, r0, r1 @ TXD1 -> TXD1
- sg_set_pinsel 113, 8, 8, 4, r0, r1 @ TXD2 -> TXD2
- sg_set_pinsel 219, 8, 8, 4, r0, r1 @ TXD3 -> TXD3
-
- ldr r0, =SC_CLKCTRL
- ldr r1, [r0]
- orr r1, r1, #SC_CLKCTRL_CEN_PERI
- str r1, [r0]
-
- ldr r3, =DIV_ROUND(PROXSTREAM2_UART_CLK, 16 * BAUDRATE)
-
- b init_uart
-proxstream2_end:
-#endif
-#if defined(CONFIG_ARCH_UNIPHIER_PH1_LD6B)
-#define PH1_LD6B_UART_CLK 88900000
- cmp r1, #0x2F
- bne ph1_ld6b_end
-
- ldr r0, =SG_IECTRL
- ldr r1, [r0]
- orr r1, r1, #1
- str r1, [r0]
-
- sg_set_pinsel 135, 3, 8, 4, r0, r1 @ PORT10 -> TXD0
- sg_set_pinsel 115, 0, 8, 4, r0, r1 @ TXD1 -> TXD1
- sg_set_pinsel 113, 2, 8, 4, r0, r1 @ SBO0 -> TXD2
-
- ldr r0, =SC_CLKCTRL
- ldr r1, [r0]
- orr r1, r1, #SC_CLKCTRL_CEN_PERI
- str r1, [r0]
-
- ldr r3, =DIV_ROUND(PH1_LD6B_UART_CLK, 16 * BAUDRATE)
-
- b init_uart
-ph1_ld6b_end:
-#endif
-
-init_uart:
- addruart r0, r1, r2
- mov r1, #UART_LCR_WLEN8 << 8
- str r1, [r0, #0x10]
- str r3, [r0, #0x24]
-
- mov pc, lr
-ENDPROC(debug_ll_init)
+++ /dev/null
-/*
- * Copyright (C) 2015 Socionext Inc.
- * Author: Masahiro Yamada <yamada.masahiro@socionext.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <linux/linkage.h>
-
-#include "ssc-regs.h"
-
-ENTRY(lowlevel_init)
- ldr r1, = SSCC
- ldr r0, [r1]
- bic r0, r0, #SSCC_ON @ L2 disable
- str r0, [r1]
- mov pc, lr
-ENDPROC(lowlevel_init)
+++ /dev/null
-/*
- * Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <config.h>
-#include <linux/linkage.h>
-#include <linux/sizes.h>
-#include <asm/system.h>
-
-#include "ssc-regs.h"
-
-ENTRY(lowlevel_init)
- mov r8, lr @ persevere link reg across call
-
- /*
- * The UniPhier Boot ROM loads SPL code to the L2 cache.
- * But CPUs can only do instruction fetch now because start.S has
- * cleared C and M bits.
- * First we need to turn on MMU and Dcache again to get back
- * data access to L2.
- */
- mrc p15, 0, r0, c1, c0, 0 @ SCTLR (System Control Register)
- orr r0, r0, #(CR_C | CR_M) @ enable MMU and Dcache
- mcr p15, 0, r0, c1, c0, 0
-
-#ifdef CONFIG_DEBUG_LL
- bl debug_ll_init
-#endif
-
- bl setup_init_ram @ RAM area for stack and page talbe
-
- /*
- * Now we are using the page table embedded in the Boot ROM.
- * It is not handy since it is not a straight mapped table for sLD3.
- * Also, the access to the external bus is prohibited. What we need
- * to do next is to create a page table and switch over to it.
- */
- bl create_page_table
- bl v7_flush_dcache_all
-
- /* Disable MMU and Dcache before switching Page Table */
- mrc p15, 0, r0, c1, c0, 0 @ SCTLR (System Control Register)
- bic r0, r0, #(CR_C | CR_M) @ disable MMU and Dcache
- mcr p15, 0, r0, c1, c0, 0
-
- bl enable_mmu
-
- mov lr, r8 @ restore link
- mov pc, lr @ back to my caller
-ENDPROC(lowlevel_init)
-
-ENTRY(enable_mmu)
- mrc p15, 0, r0, c2, c0, 2 @ TTBCR (Translation Table Base Control Register)
- bic r0, r0, #0x37
- orr r0, r0, #0x20 @ disable TTBR1
- mcr p15, 0, r0, c2, c0, 2
-
- orr r0, r12, #0x8 @ Outer Cacheability for table walks: WBWA
- mcr p15, 0, r0, c2, c0, 0 @ TTBR0
-
- mov r0, #0
- mcr p15, 0, r0, c8, c7, 0 @ invalidate TLBs
-
- mov r0, #-1 @ manager for all domains (No permission check)
- mcr p15, 0, r0, c3, c0, 0 @ DACR (Domain Access Control Register)
-
- dsb
- isb
- /*
- * MMU on:
- * TLBs was already invalidated in "../start.S"
- * So, we don't need to invalidate it here.
- */
- mrc p15, 0, r0, c1, c0, 0 @ SCTLR (System Control Register)
- orr r0, r0, #(CR_C | CR_M) @ MMU and Dcache enable
- mcr p15, 0, r0, c1, c0, 0
-
- mov pc, lr
-ENDPROC(enable_mmu)
-
-/*
- * For PH1-Pro4 or older SoCs, the size of WAY is 32KB.
- * It is large enough for tmp RAM.
- */
-#define BOOT_RAM_SIZE (SZ_32K)
-#define BOOT_RAM_BASE ((CONFIG_SPL_STACK) - (BOOT_RAM_SIZE))
-#define BOOT_WAY_BITS (0x00000100) /* way 8 */
-
-ENTRY(setup_init_ram)
- /*
- * Touch to zero for the boot way
- */
-0:
- /*
- * set SSCOQM, SSCOQAD, SSCOQSZ, SSCOQWN in this order
- */
- ldr r0, = 0x00408006 @ touch to zero with address range
- ldr r1, = SSCOQM
- str r0, [r1]
- ldr r0, = BOOT_RAM_BASE
- ldr r1, = SSCOQAD
- str r0, [r1]
- ldr r0, = BOOT_RAM_SIZE
- ldr r1, = SSCOQSZ
- str r0, [r1]
- ldr r0, = BOOT_WAY_BITS
- ldr r1, = SSCOQWN
- str r0, [r1]
- ldr r1, = SSCOPPQSEF
- ldr r0, [r1]
- cmp r0, #0 @ check if the command is successfully set
- bne 0b @ try again if an error occurs
-
- ldr r1, = SSCOLPQS
-1:
- ldr r0, [r1]
- cmp r0, #0x4
- bne 1b @ wait until the operation is completed
- str r0, [r1] @ clear the complete notification flag
-
- mov pc, lr
-ENDPROC(setup_init_ram)
-
-#define DEVICE 0x00002002 /* Non-shareable Device */
-#define NORMAL 0x0000000e /* Normal Memory Write-Back, No Write-Allocate */
-
-ENTRY(create_page_table)
- ldr r0, = DEVICE
- ldr r1, = BOOT_RAM_BASE
- mov r12, r1 @ r12 is preserved during D-cache flush
-0: str r0, [r1], #4 @ specify all the sections as Device
- adds r0, r0, #0x00100000
- bcc 0b
-
- ldr r0, = NORMAL
- str r0, [r12] @ mark the first section as Normal
- add r0, r0, #0x00100000
- str r0, [r12, #4] @ mark the second section as Normal
- mov pc, lr
-ENDPROC(create_page_table)
-
-/* We don't use Thumb instructions for now */
-#define ARM(x...) x
-#define THUMB(x...)
-
-/*
- * v7_flush_dcache_all()
- *
- * Flush the whole D-cache.
- *
- * Corrupted registers: r0-r7, r9-r11 (r6 only in Thumb mode)
- *
- * - mm - mm_struct describing address space
- *
- * Note: copied from arch/arm/mm/cache-v7.S of Linux 4.4
- */
-ENTRY(v7_flush_dcache_all)
- dmb @ ensure ordering with previous memory accesses
- mrc p15, 1, r0, c0, c0, 1 @ read clidr
- mov r3, r0, lsr #23 @ move LoC into position
- ands r3, r3, #7 << 1 @ extract LoC*2 from clidr
- beq finished @ if loc is 0, then no need to clean
-start_flush_levels:
- mov r10, #0 @ start clean at cache level 0
-flush_levels:
- add r2, r10, r10, lsr #1 @ work out 3x current cache level
- mov r1, r0, lsr r2 @ extract cache type bits from clidr
- and r1, r1, #7 @ mask of the bits for current cache only
- cmp r1, #2 @ see what cache we have at this level
- blt skip @ skip if no cache, or just i-cache
- mcr p15, 2, r10, c0, c0, 0 @ select current cache level in cssr
- isb @ isb to sych the new cssr&csidr
- mrc p15, 1, r1, c0, c0, 0 @ read the new csidr
- and r2, r1, #7 @ extract the length of the cache lines
- add r2, r2, #4 @ add 4 (line length offset)
- movw r4, #0x3ff
- ands r4, r4, r1, lsr #3 @ find maximum number on the way size
- clz r5, r4 @ find bit position of way size increment
- movw r7, #0x7fff
- ands r7, r7, r1, lsr #13 @ extract max number of the index size
-loop1:
- mov r9, r7 @ create working copy of max index
-loop2:
- ARM( orr r11, r10, r4, lsl r5 ) @ factor way and cache number into r11
- THUMB( lsl r6, r4, r5 )
- THUMB( orr r11, r10, r6 ) @ factor way and cache number into r11
- ARM( orr r11, r11, r9, lsl r2 ) @ factor index number into r11
- THUMB( lsl r6, r9, r2 )
- THUMB( orr r11, r11, r6 ) @ factor index number into r11
- mcr p15, 0, r11, c7, c14, 2 @ clean & invalidate by set/way
- subs r9, r9, #1 @ decrement the index
- bge loop2
- subs r4, r4, #1 @ decrement the way
- bge loop1
-skip:
- add r10, r10, #2 @ increment cache number
- cmp r3, r10
- bgt flush_levels
-finished:
- mov r10, #0 @ swith back to cache level 0
- mcr p15, 2, r10, c0, c0, 0 @ select current cache level in cssr
- dsb st
- isb
- mov pc, lr
-ENDPROC(v7_flush_dcache_all)
+++ /dev/null
-/*
- * UniPhier System Cache (L2 Cache) registers
- *
- * Copyright (C) 2011-2014 Panasonic Corporation
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#ifndef ARCH_SSC_REGS_H
-#define ARCH_SSC_REGS_H
-
-#define SSCC 0x500c0000
-#define SSCC_BST (0x1 << 20)
-#define SSCC_ACT (0x1 << 19)
-#define SSCC_WTG (0x1 << 18)
-#define SSCC_PRD (0x1 << 17)
-#define SSCC_WBWA (0x1 << 16)
-#define SSCC_EX (0x1 << 13)
-#define SSCC_ON (0x1 << 0)
-
-#define SSCLPDAWCR 0x500c0030
-
-#define SSCOPE 0x506c0244
-#define SSCOPE_CM_SYNC 0x00000008
-
-#define SSCOQM 0x506c0248
-#define SSCOQM_TID_MASK (0x3 << 21)
-#define SSCOQM_TID_BY_WAY (0x2 << 21)
-#define SSCOQM_TID_BY_INST_WAY (0x1 << 21)
-#define SSCOQM_TID_BY_DATA_WAY (0x0 << 21)
-#define SSCOQM_S_MASK (0x3 << 17)
-#define SSCOQM_S_WAY (0x2 << 17)
-#define SSCOQM_S_ALL (0x1 << 17)
-#define SSCOQM_S_ADDRESS (0x0 << 17)
-#define SSCOQM_CE (0x1 << 15)
-#define SSCOQM_CW (0x1 << 14)
-#define SSCOQM_CM_MASK (0x7)
-#define SSCOQM_CM_DIRT_TOUCH (0x7)
-#define SSCOQM_CM_ZERO_TOUCH (0x6)
-#define SSCOQM_CM_NORM_TOUCH (0x5)
-#define SSCOQM_CM_PREF_FETCH (0x4)
-#define SSCOQM_CM_SSC_FETCH (0x3)
-#define SSCOQM_CM_WB_INV (0x2)
-#define SSCOQM_CM_WB (0x1)
-#define SSCOQM_CM_INV (0x0)
-
-#define SSCOQAD 0x506c024c
-#define SSCOQSZ 0x506c0250
-#define SSCOQWN 0x506c0258
-
-#define SSCOPPQSEF 0x506c025c
-#define SSCOPPQSEF_FE (0x1 << 1)
-#define SSCOPPQSEF_OE (0x1 << 0)
-
-#define SSCOLPQS 0x506c0260
-#define SSCOLPQS_EF (0x1 << 2)
-#define SSCOLPQS_EST (0x1 << 1)
-#define SSCOLPQS_QST (0x1 << 0)
-
-#define SSCOQCE0 0x506c0270
-
-#define SSC_LINE_SIZE 128
-#define SSC_RANGE_OP_MAX_SIZE (0x00400000 - (SSC_LINE_SIZE))
-
-#endif /* ARCH_SSC_REGS_H */
+++ /dev/null
-/*
- * Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <linux/io.h>
-
-#include "arm-mpcore.h"
-
-#define PERIPHCLK (50 * 1000 * 1000) /* 50 MHz */
-#define PRESCALER ((PERIPHCLK) / (CONFIG_SYS_TIMER_RATE) - 1)
-
-static void *get_global_timer_base(void)
-{
- void *val;
-
- asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (val) : : "memory");
-
- return val + GLOBAL_TIMER_OFFSET;
-}
-
-unsigned long timer_read_counter(void)
-{
- /*
- * ARM 64bit Global Timer is too much for our purpose.
- * We use only lower 32 bit of the timer counter.
- */
- return readl(get_global_timer_base() + GTIMER_CNT_L);
-}
-
-int timer_init(void)
-{
- /* enable timer */
- writel(PRESCALER << 8 | 1, get_global_timer_base() + GTIMER_CTRL);
-
- return 0;
-}
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