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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
| commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
| tree | a94efe259b9009378be6d90eb30d2b019d95c194 /arch/arm/include/debug | |
| parent | Initial commit. (diff) | |
| download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip | |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/include/debug')
33 files changed, 1908 insertions, 0 deletions
diff --git a/arch/arm/include/debug/8250.S b/arch/arm/include/debug/8250.S new file mode 100644 index 000000000..e3692a37c --- /dev/null +++ b/arch/arm/include/debug/8250.S @@ -0,0 +1,55 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * arch/arm/include/debug/8250.S + * + * Copyright (C) 1994-2013 Russell King + */ +#include <linux/serial_reg.h> + + .macro addruart, rp, rv, tmp + ldr \rp, =CONFIG_DEBUG_UART_PHYS + ldr \rv, =CONFIG_DEBUG_UART_VIRT + .endm + +#ifdef CONFIG_DEBUG_UART_8250_WORD + .macro store, rd, rx:vararg + ARM_BE8(rev \rd, \rd) + str \rd, \rx + ARM_BE8(rev \rd, \rd) + .endm + + .macro load, rd, rx:vararg + ldr \rd, \rx + ARM_BE8(rev \rd, \rd) + .endm +#else + .macro store, rd, rx:vararg + strb \rd, \rx + .endm + + .macro load, rd, rx:vararg + ldrb \rd, \rx + .endm +#endif + +#define UART_SHIFT CONFIG_DEBUG_UART_8250_SHIFT + + .macro senduart,rd,rx + store \rd, [\rx, #UART_TX << UART_SHIFT] + .endm + + .macro busyuart,rd,rx +1002: load \rd, [\rx, #UART_LSR << UART_SHIFT] + and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE + teq \rd, #UART_LSR_TEMT | UART_LSR_THRE + bne 1002b + .endm + + .macro waituarttxrdy,rd,rx + .endm + + .macro waituartcts,rd,rx +1001: load \rd, [\rx, #UART_MSR << UART_SHIFT] + tst \rd, #UART_MSR_CTS + beq 1001b + .endm diff --git a/arch/arm/include/debug/asm9260.S b/arch/arm/include/debug/asm9260.S new file mode 100644 index 000000000..5a0ce145c --- /dev/null +++ b/arch/arm/include/debug/asm9260.S @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks + * Modified for ASM9260 by Oleksij Remepl <linux@rempel-privat.de> + */ + + .macro addruart, rp, rv, tmp + ldr \rp, = CONFIG_DEBUG_UART_PHYS + ldr \rv, = CONFIG_DEBUG_UART_VIRT + .endm + + .macro waituarttxrdy,rd,rx + .endm + + .macro waituartcts,rd,rx + .endm + + .macro senduart,rd,rx + str \rd, [\rx, #0x50] @ TXDATA + .endm + + .macro busyuart,rd,rx +1002: ldr \rd, [\rx, #0x60] @ STAT + tst \rd, #1 << 27 @ TXEMPTY + beq 1002b @ wait until transmit done + .endm diff --git a/arch/arm/include/debug/at91.S b/arch/arm/include/debug/at91.S new file mode 100644 index 000000000..17722824e --- /dev/null +++ b/arch/arm/include/debug/at91.S @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2003-2005 SAN People + * + * Debugging macro include header +*/ + +#define AT91_DBGU_SR (0x14) /* Status Register */ +#define AT91_DBGU_THR (0x1c) /* Transmitter Holding Register */ +#define AT91_DBGU_TXRDY (1 << 1) /* Transmitter Ready */ +#define AT91_DBGU_TXEMPTY (1 << 9) /* Transmitter Empty */ + + .macro addruart, rp, rv, tmp + ldr \rp, =CONFIG_DEBUG_UART_PHYS @ System peripherals (phys address) + ldr \rv, =CONFIG_DEBUG_UART_VIRT @ System peripherals (virt address) + .endm + + .macro senduart,rd,rx + strb \rd, [\rx, #(AT91_DBGU_THR)] @ Write to Transmitter Holding Register + .endm + + .macro waituarttxrdy,rd,rx +1001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register + tst \rd, #AT91_DBGU_TXRDY @ DBGU_TXRDY = 1 when ready to transmit + beq 1001b + .endm + + .macro waituartcts,rd,rx + .endm + + .macro busyuart,rd,rx +1001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register + tst \rd, #AT91_DBGU_TXEMPTY @ DBGU_TXEMPTY = 1 when transmission complete + beq 1001b + .endm + diff --git a/arch/arm/include/debug/bcm63xx.S b/arch/arm/include/debug/bcm63xx.S new file mode 100644 index 000000000..da65abb67 --- /dev/null +++ b/arch/arm/include/debug/bcm63xx.S @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Broadcom BCM63xx low-level UART debug + * + * Copyright (C) 2014 Broadcom Corporation + */ + +#include <linux/serial_bcm63xx.h> + + .macro addruart, rp, rv, tmp + ldr \rp, =CONFIG_DEBUG_UART_PHYS + ldr \rv, =CONFIG_DEBUG_UART_VIRT + .endm + + .macro senduart, rd, rx + /* word access do not work */ + strb \rd, [\rx, #UART_FIFO_REG] + .endm + + .macro waituarttxrdy, rd, rx +1001: ldr \rd, [\rx, #UART_IR_REG] + tst \rd, #(1 << UART_IR_TXEMPTY) + beq 1001b + .endm + + .macro waituartcts, rd, rx + .endm + + .macro busyuart, rd, rx +1002: ldr \rd, [\rx, #UART_IR_REG] + tst \rd, #(1 << UART_IR_TXTRESH) + beq 1002b + .endm diff --git a/arch/arm/include/debug/brcmstb.S b/arch/arm/include/debug/brcmstb.S new file mode 100644 index 000000000..0ff32ffc6 --- /dev/null +++ b/arch/arm/include/debug/brcmstb.S @@ -0,0 +1,180 @@ +/* + * Copyright (C) 2016 Broadcom + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#include <linux/serial_reg.h> +#include <asm/cputype.h> + +/* Physical register offset and virtual register offset */ +#define REG_PHYS_BASE 0xf0000000 +#define REG_PHYS_BASE_V7 0x08000000 +#define REG_VIRT_BASE 0xfc000000 +#define REG_PHYS_ADDR(x) ((x) + REG_PHYS_BASE) +#define REG_PHYS_ADDR_V7(x) ((x) + REG_PHYS_BASE_V7) + +/* Product id can be read from here */ +#define SUN_TOP_CTRL_BASE REG_PHYS_ADDR(0x404000) +#define SUN_TOP_CTRL_BASE_V7 REG_PHYS_ADDR_V7(0x404000) + +#define UARTA_3390 REG_PHYS_ADDR(0x40a900) +#define UARTA_7250 REG_PHYS_ADDR(0x40b400) +#define UARTA_7255 REG_PHYS_ADDR(0x40c000) +#define UARTA_7260 UARTA_7255 +#define UARTA_7268 UARTA_7255 +#define UARTA_7271 UARTA_7268 +#define UARTA_7278 REG_PHYS_ADDR_V7(0x40c000) +#define UARTA_7216 UARTA_7278 +#define UARTA_72164 UARTA_7278 +#define UARTA_72165 UARTA_7278 +#define UARTA_7364 REG_PHYS_ADDR(0x40b000) +#define UARTA_7366 UARTA_7364 +#define UARTA_74371 REG_PHYS_ADDR(0x406b00) +#define UARTA_7439 REG_PHYS_ADDR(0x40a900) +#define UARTA_7445 REG_PHYS_ADDR(0x40ab00) + +#define UART_SHIFT 2 + +#define checkuart(rp, rv, family_id, family) \ + /* Load family id */ \ + ldr rp, =family_id ; \ + /* Compare SUN_TOP_CTRL value against it */ \ + cmp rp, rv ; \ + /* Passed test, load address */ \ + ldreq rp, =UARTA_##family ; \ + /* Jump to save UART address */ \ + beq 91f + + .macro addruart, rp, rv, tmp + adr \rp, 99f @ actual addr of 99f + ldr \rv, [\rp] @ linked addr is stored there + sub \rv, \rv, \rp @ offset between the two + ldr \rp, [\rp, #4] @ linked brcmstb_uart_config + sub \tmp, \rp, \rv @ actual brcmstb_uart_config + ldr \rp, [\tmp] @ Load brcmstb_uart_config + cmp \rp, #1 @ needs initialization? + bne 100f @ no; go load the addresses + mov \rv, #0 @ yes; record init is done + str \rv, [\tmp] + + /* Check for V7 memory map if B53 */ + mrc p15, 0, \rv, c0, c0, 0 @ get Main ID register + ldr \rp, =ARM_CPU_PART_MASK + and \rv, \rv, \rp + ldr \rp, =ARM_CPU_PART_BRAHMA_B53 @ check for B53 CPU + cmp \rv, \rp + bne 10f + + /* if PERIPHBASE doesn't overlap REG_PHYS_BASE use V7 map */ + mrc p15, 1, \rv, c15, c3, 0 @ get PERIPHBASE from CBAR + ands \rv, \rv, #REG_PHYS_BASE + ldreq \rp, =SUN_TOP_CTRL_BASE_V7 + + /* Check SUN_TOP_CTRL base */ +10: ldrne \rp, =SUN_TOP_CTRL_BASE @ load SUN_TOP_CTRL PA + ldr \rv, [\rp, #0] @ get register contents +ARM_BE8( rev \rv, \rv ) + and \rv, \rv, #0xffffff00 @ strip revision bits [7:0] + + /* Chip specific detection starts here */ +20: checkuart(\rp, \rv, 0x33900000, 3390) +21: checkuart(\rp, \rv, 0x72160000, 7216) +22: checkuart(\rp, \rv, 0x07216400, 72164) +23: checkuart(\rp, \rv, 0x07216500, 72165) +24: checkuart(\rp, \rv, 0x72500000, 7250) +25: checkuart(\rp, \rv, 0x72550000, 7255) +26: checkuart(\rp, \rv, 0x72600000, 7260) +27: checkuart(\rp, \rv, 0x72680000, 7268) +28: checkuart(\rp, \rv, 0x72710000, 7271) +29: checkuart(\rp, \rv, 0x72780000, 7278) +30: checkuart(\rp, \rv, 0x73640000, 7364) +31: checkuart(\rp, \rv, 0x73660000, 7366) +32: checkuart(\rp, \rv, 0x07437100, 74371) +33: checkuart(\rp, \rv, 0x74390000, 7439) +34: checkuart(\rp, \rv, 0x74450000, 7445) + + /* No valid UART found */ +90: mov \rp, #0 + /* fall through */ + + /* Record whichever UART we chose */ +91: str \rp, [\tmp, #4] @ Store in brcmstb_uart_phys + cmp \rp, #0 @ Valid UART address? + bne 92f @ Yes, go process it + str \rp, [\tmp, #8] @ Store 0 in brcmstb_uart_virt + b 100f @ Done +92: and \rv, \rp, #0xffffff @ offset within 16MB section + add \rv, \rv, #REG_VIRT_BASE + str \rv, [\tmp, #8] @ Store in brcmstb_uart_virt + b 100f + + .align +99: .word . + .word brcmstb_uart_config + .ltorg + + /* Load previously selected UART address */ +100: ldr \rp, [\tmp, #4] @ Load brcmstb_uart_phys + ldr \rv, [\tmp, #8] @ Load brcmstb_uart_virt + .endm + + .macro store, rd, rx:vararg +ARM_BE8( rev \rd, \rd ) + str \rd, \rx + .endm + + .macro load, rd, rx:vararg + ldr \rd, \rx +ARM_BE8( rev \rd, \rd ) + .endm + + .macro senduart,rd,rx + store \rd, [\rx, #UART_TX << UART_SHIFT] + .endm + + .macro busyuart,rd,rx +1002: load \rd, [\rx, #UART_LSR << UART_SHIFT] + and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE + teq \rd, #UART_LSR_TEMT | UART_LSR_THRE + bne 1002b + .endm + + .macro waituarttxrdy,rd,rx + .endm + + .macro waituartcts,rd,rx + .endm + +/* + * Storage for the state maintained by the macros above. + * + * In the kernel proper, this data is located in arch/arm/mach-bcm/brcmstb.c. + * That's because this header is included from multiple files, and we only + * want a single copy of the data. In particular, the UART probing code above + * assumes it's running using physical addresses. This is true when this file + * is included from head.o, but not when included from debug.o. So we need + * to share the probe results between the two copies, rather than having + * to re-run the probing again later. + * + * In the decompressor, we put the symbol/storage right here, since common.c + * isn't included in the decompressor build. This symbol gets put in .text + * even though it's really data, since .data is discarded from the + * decompressor. Luckily, .text is writeable in the decompressor, unless + * CONFIG_ZBOOT_ROM. That dependency is handled in arch/arm/Kconfig.debug. + */ +#if defined(ZIMAGE) +brcmstb_uart_config: + /* Debug UART initialization required */ + .word 1 + /* Debug UART physical address */ + .word 0 + /* Debug UART virtual address */ + .word 0 +#endif diff --git a/arch/arm/include/debug/clps711x.S b/arch/arm/include/debug/clps711x.S new file mode 100644 index 000000000..a983d12a6 --- /dev/null +++ b/arch/arm/include/debug/clps711x.S @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2014 Alexander Shiyan <shc_work@mail.ru> + */ + +#ifndef CONFIG_DEBUG_CLPS711X_UART2 +#define CLPS711X_UART_PADDR (0x80000000 + 0x0000) +#define CLPS711X_UART_VADDR (0xfeff4000 + 0x0000) +#else +#define CLPS711X_UART_PADDR (0x80000000 + 0x1000) +#define CLPS711X_UART_VADDR (0xfeff4000 + 0x1000) +#endif + +#define SYSFLG (0x0140) +#define SYSFLG_UBUSY (1 << 11) +#define UARTDR (0x0480) + + .macro addruart, rp, rv, tmp + ldr \rv, =CLPS711X_UART_VADDR + ldr \rp, =CLPS711X_UART_PADDR + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy,rd,rx + .endm + + .macro senduart,rd,rx + str \rd, [\rx, #UARTDR] + .endm + + .macro busyuart,rd,rx +1001: ldr \rd, [\rx, #SYSFLG] + tst \rd, #SYSFLG_UBUSY + bne 1001b + .endm diff --git a/arch/arm/include/debug/dc21285.S b/arch/arm/include/debug/dc21285.S new file mode 100644 index 000000000..4ec0e5e31 --- /dev/null +++ b/arch/arm/include/debug/dc21285.S @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* arch/arm/mach-footbridge/include/mach/debug-macro.S + * + * Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks +*/ + +#include <asm/hardware/dec21285.h> + +#include <mach/hardware.h> + /* For EBSA285 debugging */ + .equ dc21285_high, ARMCSR_BASE & 0xff000000 + .equ dc21285_low, ARMCSR_BASE & 0x00ffffff + + .macro addruart, rp, rv, tmp + .if dc21285_low + mov \rp, #dc21285_low + .else + mov \rp, #0 + .endif + orr \rv, \rp, #dc21285_high + orr \rp, \rp, #0x42000000 + .endm + + .macro senduart,rd,rx + str \rd, [\rx, #0x160] @ UARTDR + .endm + + .macro busyuart,rd,rx +1001: ldr \rd, [\rx, #0x178] @ UARTFLG + tst \rd, #1 << 3 + bne 1001b + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy,rd,rx + .endm diff --git a/arch/arm/include/debug/digicolor.S b/arch/arm/include/debug/digicolor.S new file mode 100644 index 000000000..443674cad --- /dev/null +++ b/arch/arm/include/debug/digicolor.S @@ -0,0 +1,34 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Debugging macro include header for Conexant Digicolor USART + * + * Copyright (C) 2014 Paradox Innovation Ltd. +*/ + +#define UA0_STATUS 0x0742 +#define UA0_EMI_REC 0x0744 + +#define UA0_STATUS_TX_READY 0x40 + +#ifdef CONFIG_DEBUG_UART_PHYS + .macro addruart, rp, rv, tmp + ldr \rp, =CONFIG_DEBUG_UART_PHYS + ldr \rv, =CONFIG_DEBUG_UART_VIRT + .endm +#endif + + .macro senduart,rd,rx + strb \rd, [\rx, #UA0_EMI_REC] + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy,rd,rx + .endm + + .macro busyuart,rd,rx +1001: ldrb \rd, [\rx, #UA0_STATUS] + tst \rd, #UA0_STATUS_TX_READY + beq 1001b + .endm diff --git a/arch/arm/include/debug/efm32.S b/arch/arm/include/debug/efm32.S new file mode 100644 index 000000000..b0083d6e3 --- /dev/null +++ b/arch/arm/include/debug/efm32.S @@ -0,0 +1,45 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2013 Pengutronix + * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de> + */ + +#define UARTn_CMD 0x000c +#define UARTn_CMD_TXEN 0x0004 + +#define UARTn_STATUS 0x0010 +#define UARTn_STATUS_TXC 0x0020 +#define UARTn_STATUS_TXBL 0x0040 + +#define UARTn_TXDATA 0x0034 + + .macro addruart, rx, tmp, tmp2 + ldr \rx, =(CONFIG_DEBUG_UART_PHYS) + + /* + * enable TX. The driver might disable it to save energy. We + * don't care about disabling at the end as during debug power + * consumption isn't that important. + */ + ldr \tmp, =(UARTn_CMD_TXEN) + str \tmp, [\rx, #UARTn_CMD] + .endm + + .macro senduart,rd,rx + strb \rd, [\rx, #UARTn_TXDATA] + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy,rd,rx +1001: ldr \rd, [\rx, #UARTn_STATUS] + tst \rd, #UARTn_STATUS_TXBL + beq 1001b + .endm + + .macro busyuart,rd,rx +1001: ldr \rd, [\rx, UARTn_STATUS] + tst \rd, #UARTn_STATUS_TXC + bne 1001b + .endm diff --git a/arch/arm/include/debug/exynos.S b/arch/arm/include/debug/exynos.S new file mode 100644 index 000000000..74b56769f --- /dev/null +++ b/arch/arm/include/debug/exynos.S @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com + */ + +/* pull in the relevant register and map files. */ + +#define S3C_ADDR_BASE 0xF6000000 +#define S3C_VA_UART S3C_ADDR_BASE + 0x01000000 +#define EXYNOS4_PA_UART 0x13800000 +#define EXYNOS5_PA_UART 0x12C00000 + + /* note, for the boot process to work we have to keep the UART + * virtual address aligned to an 1MiB boundary for the L1 + * mapping the head code makes. We keep the UART virtual address + * aligned and add in the offset when we load the value here. + */ + + .macro addruart, rp, rv, tmp + mrc p15, 0, \tmp, c0, c0, 0 + and \tmp, \tmp, #0xf0 + teq \tmp, #0xf0 @@ A15 + beq 100f + mrc p15, 0, \tmp, c0, c0, 5 + and \tmp, \tmp, #0xf00 + teq \tmp, #0x100 @@ A15 + A7 but boot to A7 +100: ldreq \rp, =EXYNOS5_PA_UART + movne \rp, #EXYNOS4_PA_UART @@ EXYNOS4 + ldr \rv, =S3C_VA_UART +#if CONFIG_DEBUG_S3C_UART != 0 + add \rp, \rp, #(0x10000 * CONFIG_DEBUG_S3C_UART) + add \rv, \rv, #(0x10000 * CONFIG_DEBUG_S3C_UART) +#endif + .endm + +#define fifo_full fifo_full_s5pv210 +#define fifo_level fifo_level_s5pv210 + +#include <debug/samsung.S> diff --git a/arch/arm/include/debug/icedcc.S b/arch/arm/include/debug/icedcc.S new file mode 100644 index 000000000..d5e65da8a --- /dev/null +++ b/arch/arm/include/debug/icedcc.S @@ -0,0 +1,95 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * arch/arm/include/debug/icedcc.S + * + * Copyright (C) 1994-1999 Russell King + */ + + @@ debug using ARM EmbeddedICE DCC channel + + .macro addruart, rp, rv, tmp + .endm + +#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K) || defined(CONFIG_CPU_V7) + + .macro senduart, rd, rx + mcr p14, 0, \rd, c0, c5, 0 + .endm + + .macro busyuart, rd, rx +1001: + mrc p14, 0, \rx, c0, c1, 0 + tst \rx, #0x20000000 + beq 1001b + .endm + + .macro waituartcts, rd, rx + .endm + + .macro waituarttxrdy, rd, rx + mov \rd, #0x2000000 +1001: + subs \rd, \rd, #1 + bmi 1002f + mrc p14, 0, \rx, c0, c1, 0 + tst \rx, #0x20000000 + bne 1001b +1002: + .endm + +#elif defined(CONFIG_CPU_XSCALE) + + .macro senduart, rd, rx + mcr p14, 0, \rd, c8, c0, 0 + .endm + + .macro busyuart, rd, rx +1001: + mrc p14, 0, \rx, c14, c0, 0 + tst \rx, #0x10000000 + beq 1001b + .endm + + .macro waituartcts, rd, rx + .endm + + .macro waituarttxrdy, rd, rx + mov \rd, #0x10000000 +1001: + subs \rd, \rd, #1 + bmi 1002f + mrc p14, 0, \rx, c14, c0, 0 + tst \rx, #0x10000000 + bne 1001b +1002: + .endm + +#else + + .macro senduart, rd, rx + mcr p14, 0, \rd, c1, c0, 0 + .endm + + .macro busyuart, rd, rx +1001: + mrc p14, 0, \rx, c0, c0, 0 + tst \rx, #2 + beq 1001b + + .endm + + .macro waituartcts, rd, rx + .endm + + .macro waituarttxrdy, rd, rx + mov \rd, #0x2000000 +1001: + subs \rd, \rd, #1 + bmi 1002f + mrc p14, 0, \rx, c0, c0, 0 + tst \rx, #2 + bne 1001b +1002: + .endm + +#endif /* CONFIG_CPU_V6 */ diff --git a/arch/arm/include/debug/imx-uart.h b/arch/arm/include/debug/imx-uart.h new file mode 100644 index 000000000..3edbb3c5b --- /dev/null +++ b/arch/arm/include/debug/imx-uart.h @@ -0,0 +1,142 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2012-2015 Freescale Semiconductor, Inc. + */ + +#ifndef __DEBUG_IMX_UART_H +#define __DEBUG_IMX_UART_H + +#define IMX1_UART1_BASE_ADDR 0x00206000 +#define IMX1_UART2_BASE_ADDR 0x00207000 +#define IMX1_UART_BASE_ADDR(n) IMX1_UART##n##_BASE_ADDR +#define IMX1_UART_BASE(n) IMX1_UART_BASE_ADDR(n) + +#define IMX25_UART1_BASE_ADDR 0x43f90000 +#define IMX25_UART2_BASE_ADDR 0x43f94000 +#define IMX25_UART3_BASE_ADDR 0x5000c000 +#define IMX25_UART4_BASE_ADDR 0x50008000 +#define IMX25_UART5_BASE_ADDR 0x5002c000 +#define IMX25_UART_BASE_ADDR(n) IMX25_UART##n##_BASE_ADDR +#define IMX25_UART_BASE(n) IMX25_UART_BASE_ADDR(n) + +#define IMX27_UART1_BASE_ADDR 0x1000a000 +#define IMX27_UART2_BASE_ADDR 0x1000b000 +#define IMX27_UART3_BASE_ADDR 0x1000c000 +#define IMX27_UART4_BASE_ADDR 0x1000d000 +#define IMX27_UART_BASE_ADDR(n) IMX27_UART##n##_BASE_ADDR +#define IMX27_UART_BASE(n) IMX27_UART_BASE_ADDR(n) + +#define IMX31_UART1_BASE_ADDR 0x43f90000 +#define IMX31_UART2_BASE_ADDR 0x43f94000 +#define IMX31_UART3_BASE_ADDR 0x5000c000 +#define IMX31_UART4_BASE_ADDR 0x43fb0000 +#define IMX31_UART5_BASE_ADDR 0x43fb4000 +#define IMX31_UART_BASE_ADDR(n) IMX31_UART##n##_BASE_ADDR +#define IMX31_UART_BASE(n) IMX31_UART_BASE_ADDR(n) + +#define IMX35_UART1_BASE_ADDR 0x43f90000 +#define IMX35_UART2_BASE_ADDR 0x43f94000 +#define IMX35_UART3_BASE_ADDR 0x5000c000 +#define IMX35_UART_BASE_ADDR(n) IMX35_UART##n##_BASE_ADDR +#define IMX35_UART_BASE(n) IMX35_UART_BASE_ADDR(n) + +#define IMX50_UART1_BASE_ADDR 0x53fbc000 +#define IMX50_UART2_BASE_ADDR 0x53fc0000 +#define IMX50_UART3_BASE_ADDR 0x5000c000 +#define IMX50_UART4_BASE_ADDR 0x53ff0000 +#define IMX50_UART5_BASE_ADDR 0x63f90000 +#define IMX50_UART_BASE_ADDR(n) IMX50_UART##n##_BASE_ADDR +#define IMX50_UART_BASE(n) IMX50_UART_BASE_ADDR(n) + +#define IMX51_UART1_BASE_ADDR 0x73fbc000 +#define IMX51_UART2_BASE_ADDR 0x73fc0000 +#define IMX51_UART3_BASE_ADDR 0x7000c000 +#define IMX51_UART_BASE_ADDR(n) IMX51_UART##n##_BASE_ADDR +#define IMX51_UART_BASE(n) IMX51_UART_BASE_ADDR(n) + +#define IMX53_UART1_BASE_ADDR 0x53fbc000 +#define IMX53_UART2_BASE_ADDR 0x53fc0000 +#define IMX53_UART3_BASE_ADDR 0x5000c000 +#define IMX53_UART4_BASE_ADDR 0x53ff0000 +#define IMX53_UART5_BASE_ADDR 0x63f90000 +#define IMX53_UART_BASE_ADDR(n) IMX53_UART##n##_BASE_ADDR +#define IMX53_UART_BASE(n) IMX53_UART_BASE_ADDR(n) + +#define IMX6Q_UART1_BASE_ADDR 0x02020000 +#define IMX6Q_UART2_BASE_ADDR 0x021e8000 +#define IMX6Q_UART3_BASE_ADDR 0x021ec000 +#define IMX6Q_UART4_BASE_ADDR 0x021f0000 +#define IMX6Q_UART5_BASE_ADDR 0x021f4000 +#define IMX6Q_UART_BASE_ADDR(n) IMX6Q_UART##n##_BASE_ADDR +#define IMX6Q_UART_BASE(n) IMX6Q_UART_BASE_ADDR(n) + +#define IMX6SL_UART1_BASE_ADDR 0x02020000 +#define IMX6SL_UART2_BASE_ADDR 0x02024000 +#define IMX6SL_UART3_BASE_ADDR 0x02034000 +#define IMX6SL_UART4_BASE_ADDR 0x02038000 +#define IMX6SL_UART5_BASE_ADDR 0x02018000 +#define IMX6SL_UART_BASE_ADDR(n) IMX6SL_UART##n##_BASE_ADDR +#define IMX6SL_UART_BASE(n) IMX6SL_UART_BASE_ADDR(n) + +#define IMX6SX_UART1_BASE_ADDR 0x02020000 +#define IMX6SX_UART2_BASE_ADDR 0x021e8000 +#define IMX6SX_UART3_BASE_ADDR 0x021ec000 +#define IMX6SX_UART4_BASE_ADDR 0x021f0000 +#define IMX6SX_UART5_BASE_ADDR 0x021f4000 +#define IMX6SX_UART6_BASE_ADDR 0x022a0000 +#define IMX6SX_UART_BASE_ADDR(n) IMX6SX_UART##n##_BASE_ADDR +#define IMX6SX_UART_BASE(n) IMX6SX_UART_BASE_ADDR(n) + +#define IMX6UL_UART1_BASE_ADDR 0x02020000 +#define IMX6UL_UART2_BASE_ADDR 0x021e8000 +#define IMX6UL_UART3_BASE_ADDR 0x021ec000 +#define IMX6UL_UART4_BASE_ADDR 0x021f0000 +#define IMX6UL_UART5_BASE_ADDR 0x021f4000 +#define IMX6UL_UART6_BASE_ADDR 0x021fc000 +#define IMX6UL_UART7_BASE_ADDR 0x02018000 +#define IMX6UL_UART8_BASE_ADDR 0x02024000 +#define IMX6UL_UART_BASE_ADDR(n) IMX6UL_UART##n##_BASE_ADDR +#define IMX6UL_UART_BASE(n) IMX6UL_UART_BASE_ADDR(n) + +#define IMX7D_UART1_BASE_ADDR 0x30860000 +#define IMX7D_UART2_BASE_ADDR 0x30890000 +#define IMX7D_UART3_BASE_ADDR 0x30880000 +#define IMX7D_UART4_BASE_ADDR 0x30a60000 +#define IMX7D_UART5_BASE_ADDR 0x30a70000 +#define IMX7D_UART6_BASE_ADDR 0x30a80000 +#define IMX7D_UART7_BASE_ADDR 0x30a90000 +#define IMX7D_UART_BASE_ADDR(n) IMX7D_UART##n##_BASE_ADDR +#define IMX7D_UART_BASE(n) IMX7D_UART_BASE_ADDR(n) + +#define IMX_DEBUG_UART_BASE(soc) soc##_UART_BASE(CONFIG_DEBUG_IMX_UART_PORT) + +#ifdef CONFIG_DEBUG_IMX1_UART +#define UART_PADDR IMX_DEBUG_UART_BASE(IMX1) +#elif defined(CONFIG_DEBUG_IMX25_UART) +#define UART_PADDR IMX_DEBUG_UART_BASE(IMX25) +#elif defined(CONFIG_DEBUG_IMX27_UART) +#define UART_PADDR IMX_DEBUG_UART_BASE(IMX27) +#elif defined(CONFIG_DEBUG_IMX31_UART) +#define UART_PADDR IMX_DEBUG_UART_BASE(IMX31) +#elif defined(CONFIG_DEBUG_IMX35_UART) +#define UART_PADDR IMX_DEBUG_UART_BASE(IMX35) +#elif defined(CONFIG_DEBUG_IMX50_UART) +#define UART_PADDR IMX_DEBUG_UART_BASE(IMX50) +#elif defined(CONFIG_DEBUG_IMX51_UART) +#define UART_PADDR IMX_DEBUG_UART_BASE(IMX51) +#elif defined(CONFIG_DEBUG_IMX53_UART) +#define UART_PADDR IMX_DEBUG_UART_BASE(IMX53) +#elif defined(CONFIG_DEBUG_IMX6Q_UART) +#define UART_PADDR IMX_DEBUG_UART_BASE(IMX6Q) +#elif defined(CONFIG_DEBUG_IMX6SL_UART) +#define UART_PADDR IMX_DEBUG_UART_BASE(IMX6SL) +#elif defined(CONFIG_DEBUG_IMX6SX_UART) +#define UART_PADDR IMX_DEBUG_UART_BASE(IMX6SX) +#elif defined(CONFIG_DEBUG_IMX6UL_UART) +#define UART_PADDR IMX_DEBUG_UART_BASE(IMX6UL) +#elif defined(CONFIG_DEBUG_IMX7D_UART) +#define UART_PADDR IMX_DEBUG_UART_BASE(IMX7D) + +#endif + +#endif /* __DEBUG_IMX_UART_H */ diff --git a/arch/arm/include/debug/imx.S b/arch/arm/include/debug/imx.S new file mode 100644 index 000000000..bb7b95505 --- /dev/null +++ b/arch/arm/include/debug/imx.S @@ -0,0 +1,49 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* arch/arm/mach-imx/include/mach/debug-macro.S + * + * Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks + */ + +#include <asm/assembler.h> +#include "imx-uart.h" + +/* + * FIXME: This is a copy of IMX_IO_P2V in hardware.h, and needs to + * stay sync with that. It's hard to maintain, and should be fixed + * globally for multi-platform build to use a fixed virtual address + * for low-level debug uart port across platforms. + */ +#define IMX_IO_P2V(x) ( \ + (((x) & 0x80000000) >> 7) | \ + (0xf4000000 + \ + (((x) & 0x50000000) >> 6) + \ + (((x) & 0x0b000000) >> 4) + \ + (((x) & 0x000fffff)))) + +#define UART_VADDR IMX_IO_P2V(UART_PADDR) + + .macro addruart, rp, rv, tmp + ldr \rp, =UART_PADDR @ physical + ldr \rv, =UART_VADDR @ virtual + .endm + + .macro senduart,rd,rx + ARM_BE8(rev \rd, \rd) + str \rd, [\rx, #0x40] @ TXDATA + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy,rd,rx + .endm + + .macro busyuart,rd,rx +1002: ldr \rd, [\rx, #0x98] @ SR2 + ARM_BE8(rev \rd, \rd) + tst \rd, #1 << 3 @ TXDC + beq 1002b @ wait until transmit done + .endm diff --git a/arch/arm/include/debug/meson.S b/arch/arm/include/debug/meson.S new file mode 100644 index 000000000..7b60e4401 --- /dev/null +++ b/arch/arm/include/debug/meson.S @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2014 Carlo Caione + * Carlo Caione <carlo@caione.org> + */ + +#define MESON_AO_UART_WFIFO 0x0 +#define MESON_AO_UART_STATUS 0xc + +#define MESON_AO_UART_TX_FIFO_EMPTY (1 << 22) +#define MESON_AO_UART_TX_FIFO_FULL (1 << 21) + + .macro addruart, rp, rv, tmp + ldr \rp, =(CONFIG_DEBUG_UART_PHYS) @ physical + ldr \rv, =(CONFIG_DEBUG_UART_VIRT) @ virtual + .endm + + .macro senduart,rd,rx + str \rd, [\rx, #MESON_AO_UART_WFIFO] + .endm + + .macro busyuart,rd,rx +1002: ldr \rd, [\rx, #MESON_AO_UART_STATUS] + tst \rd, #MESON_AO_UART_TX_FIFO_EMPTY + beq 1002b + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy,rd,rx +1001: ldr \rd, [\rx, #MESON_AO_UART_STATUS] + tst \rd, #MESON_AO_UART_TX_FIFO_FULL + bne 1001b + .endm diff --git a/arch/arm/include/debug/msm.S b/arch/arm/include/debug/msm.S new file mode 100644 index 000000000..530edc74f --- /dev/null +++ b/arch/arm/include/debug/msm.S @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * + * Copyright (C) 2007 Google, Inc. + * Copyright (c) 2011, Code Aurora Forum. All rights reserved. + * Author: Brian Swetland <swetland@google.com> + */ + + .macro addruart, rp, rv, tmp + ldr \rp, =CONFIG_DEBUG_UART_PHYS + ldr \rv, =CONFIG_DEBUG_UART_VIRT + .endm + + .macro senduart, rd, rx +ARM_BE8(rev \rd, \rd ) + @ Write the 1 character to UARTDM_TF + str \rd, [\rx, #0x70] + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy, rd, rx + @ check for TX_EMT in UARTDM_SR + ldr \rd, [\rx, #0x08] +ARM_BE8(rev \rd, \rd ) + tst \rd, #0x08 + bne 1002f + @ wait for TXREADY in UARTDM_ISR +1001: ldr \rd, [\rx, #0x14] +ARM_BE8(rev \rd, \rd ) + tst \rd, #0x80 + beq 1001b +1002: + @ Clear TX_READY by writing to the UARTDM_CR register + mov \rd, #0x300 +ARM_BE8(rev \rd, \rd ) + str \rd, [\rx, #0x10] + @ Write 0x1 to NCF register + mov \rd, #0x1 +ARM_BE8(rev \rd, \rd ) + str \rd, [\rx, #0x40] + @ UARTDM reg. Read to induce delay + ldr \rd, [\rx, #0x08] + .endm + + .macro busyuart, rd, rx + .endm diff --git a/arch/arm/include/debug/omap2plus.S b/arch/arm/include/debug/omap2plus.S new file mode 100644 index 000000000..0680be6c7 --- /dev/null +++ b/arch/arm/include/debug/omap2plus.S @@ -0,0 +1,82 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks +*/ + +#include <linux/serial_reg.h> + +/* External port on Zoom2/3 */ +#define ZOOM_UART_BASE 0x10000000 +#define ZOOM_UART_VIRT 0xfa400000 + +#define OMAP_PORT_SHIFT 2 +#define ZOOM_PORT_SHIFT 1 + +#define UART_OFFSET(addr) ((addr) & 0x00ffffff) + + .pushsection .data + .align 2 +omap_uart_phys: .word 0 +omap_uart_virt: .word 0 +omap_uart_lsr: .word 0 + .popsection + + .macro addruart, rp, rv, tmp + + /* Use omap_uart_phys/virt if already configured */ +10: adr \rp, 99f @ get effective addr of 99f + ldr \rv, [\rp] @ get absolute addr of 99f + sub \rv, \rv, \rp @ offset between the two + ldr \rp, [\rp, #4] @ abs addr of omap_uart_phys + sub \tmp, \rp, \rv @ make it effective + ldr \rp, [\tmp, #0] @ omap_uart_phys + ldr \rv, [\tmp, #4] @ omap_uart_virt + cmp \rp, #0 @ is port configured? + cmpne \rv, #0 + bne 100f @ already configured + + /* Configure the UART offset from the phys/virt base */ +#ifdef CONFIG_DEBUG_ZOOM_UART + ldr \rp, =ZOOM_UART_BASE + str \rp, [\tmp, #0] @ omap_uart_phys + ldr \rp, =ZOOM_UART_VIRT + str \rp, [\tmp, #4] @ omap_uart_virt + mov \rp, #(UART_LSR << ZOOM_PORT_SHIFT) + str \rp, [\tmp, #8] @ omap_uart_lsr +#endif + b 10b + + .align +99: .word . + .word omap_uart_phys + .ltorg + +100: /* Pass the UART_LSR reg address */ + ldr \tmp, [\tmp, #8] @ omap_uart_lsr + add \rp, \rp, \tmp + add \rv, \rv, \tmp + .endm + + .macro senduart,rd,rx + orr \rd, \rd, \rx, lsl #24 @ preserve LSR reg offset + bic \rx, \rx, #0xff @ get base (THR) reg address + strb \rd, [\rx] @ send lower byte of rd + orr \rx, \rx, \rd, lsr #24 @ restore original rx (LSR) + bic \rd, \rd, #(0xff << 24) @ restore original rd + .endm + + .macro busyuart,rd,rx +1001: ldrb \rd, [\rx] @ rx contains UART_LSR address + and \rd, \rd, #(UART_LSR_TEMT | UART_LSR_THRE) + teq \rd, #(UART_LSR_TEMT | UART_LSR_THRE) + bne 1001b + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy,rd,rx + .endm diff --git a/arch/arm/include/debug/palmchip.S b/arch/arm/include/debug/palmchip.S new file mode 100644 index 000000000..aed59332e --- /dev/null +++ b/arch/arm/include/debug/palmchip.S @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#include <linux/serial_reg.h> + +#undef UART_TX +#undef UART_LSR +#undef UART_MSR + +#define UART_TX 1 +#define UART_LSR 7 +#define UART_MSR 8 + +#include <debug/8250.S> diff --git a/arch/arm/include/debug/pl01x.S b/arch/arm/include/debug/pl01x.S new file mode 100644 index 000000000..0c7bfa4c1 --- /dev/null +++ b/arch/arm/include/debug/pl01x.S @@ -0,0 +1,44 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* arch/arm/include/debug/pl01x.S + * + * Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks +*/ +#include <linux/amba/serial.h> + +#ifdef CONFIG_DEBUG_ZTE_ZX +#undef UART01x_DR +#undef UART01x_FR +#define UART01x_DR 0x04 +#define UART01x_FR 0x14 +#endif + +#ifdef CONFIG_DEBUG_UART_PHYS + .macro addruart, rp, rv, tmp + ldr \rp, =CONFIG_DEBUG_UART_PHYS + ldr \rv, =CONFIG_DEBUG_UART_VIRT + .endm +#endif + + .macro senduart,rd,rx + strb \rd, [\rx, #UART01x_DR] + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy,rd,rx +1001: ldr \rd, [\rx, #UART01x_FR] + ARM_BE8( rev \rd, \rd ) + tst \rd, #UART01x_FR_TXFF + bne 1001b + .endm + + .macro busyuart,rd,rx +1001: ldr \rd, [\rx, #UART01x_FR] + ARM_BE8( rev \rd, \rd ) + tst \rd, #UART01x_FR_BUSY + bne 1001b + .endm diff --git a/arch/arm/include/debug/renesas-scif.S b/arch/arm/include/debug/renesas-scif.S new file mode 100644 index 000000000..8e433e981 --- /dev/null +++ b/arch/arm/include/debug/renesas-scif.S @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Renesas SCIF(A) debugging macro include header + * + * Based on r8a7790.S + * + * Copyright (C) 2012-2013 Renesas Electronics Corporation + * Copyright (C) 1994-1999 Russell King + */ + +#define SCIF_PHYS CONFIG_DEBUG_UART_PHYS +#define SCIF_VIRT ((SCIF_PHYS & 0x00ffffff) | 0xfd000000) + +#if defined(CONFIG_DEBUG_R7S9210_SCIF2) || defined(CONFIG_DEBUG_R7S9210_SCIF4) +/* RZ/A2 SCIFA */ +#define FTDR 0x06 +#define FSR 0x08 +#elif CONFIG_DEBUG_UART_PHYS < 0xe6e00000 +/* SCIFA */ +#define FTDR 0x20 +#define FSR 0x14 +#else +/* SCIF */ +#define FTDR 0x0c +#define FSR 0x10 +#endif + +#define TDFE (1 << 5) +#define TEND (1 << 6) + + .macro addruart, rp, rv, tmp + ldr \rp, =SCIF_PHYS + ldr \rv, =SCIF_VIRT + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy, rd, rx +1001: ldrh \rd, [\rx, #FSR] + tst \rd, #TDFE + beq 1001b + .endm + + .macro senduart, rd, rx + strb \rd, [\rx, #FTDR] + ldrh \rd, [\rx, #FSR] + bic \rd, \rd, #TEND + strh \rd, [\rx, #FSR] + .endm + + .macro busyuart, rd, rx +1001: ldrh \rd, [\rx, #FSR] + tst \rd, #TEND + beq 1001b + .endm diff --git a/arch/arm/include/debug/s3c24xx.S b/arch/arm/include/debug/s3c24xx.S new file mode 100644 index 000000000..af873b526 --- /dev/null +++ b/arch/arm/include/debug/s3c24xx.S @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* arch/arm/mach-s3c2410/include/mach/debug-macro.S + * + * Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Copyright (C) 2005 Simtec Electronics + * + * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks +*/ + +#include <linux/serial_s3c.h> + +#define S3C2410_UART1_OFF (0x4000) + + .macro addruart, rp, rv, tmp + ldr \rp, = CONFIG_DEBUG_UART_PHYS + ldr \rv, = CONFIG_DEBUG_UART_VIRT + .endm + + .macro fifo_full_s3c2410 rd, rx + ldr \rd, [\rx, # S3C2410_UFSTAT] + tst \rd, #S3C2410_UFSTAT_TXFULL + .endm + + .macro fifo_level_s3c2410 rd, rx + ldr \rd, [\rx, # S3C2410_UFSTAT] + and \rd, \rd, #S3C2410_UFSTAT_TXMASK + .endm + +/* Select the correct implementation depending on the configuration. The + * S3C2440 will get selected by default, as these are the most widely + * used variants of these +*/ + +#if defined(CONFIG_DEBUG_S3C2410_UART) +#define fifo_full fifo_full_s3c2410 +#define fifo_level fifo_level_s3c2410 +#endif + +/* include the reset of the code which will do the work */ + +#include <debug/samsung.S> diff --git a/arch/arm/include/debug/s5pv210.S b/arch/arm/include/debug/s5pv210.S new file mode 100644 index 000000000..820a1cfb0 --- /dev/null +++ b/arch/arm/include/debug/s5pv210.S @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com +*/ + +/* pull in the relevant register and map files. */ + +#define S3C_ADDR_BASE 0xF6000000 +#define S3C_VA_UART S3C_ADDR_BASE + 0x01000000 +#define S5PV210_PA_UART 0xe2900000 + + /* note, for the boot process to work we have to keep the UART + * virtual address aligned to an 1MiB boundary for the L1 + * mapping the head code makes. We keep the UART virtual address + * aligned and add in the offset when we load the value here. + */ + + .macro addruart, rp, rv, tmp + ldr \rp, =S5PV210_PA_UART + ldr \rv, =S3C_VA_UART +#if CONFIG_DEBUG_S3C_UART != 0 + add \rp, \rp, #(0x400 * CONFIG_DEBUG_S3C_UART) + add \rv, \rv, #(0x400 * CONFIG_DEBUG_S3C_UART) +#endif + .endm + +#define fifo_full fifo_full_s5pv210 +#define fifo_level fifo_level_s5pv210 + +#include <debug/samsung.S> diff --git a/arch/arm/include/debug/sa1100.S b/arch/arm/include/debug/sa1100.S new file mode 100644 index 000000000..7968ea52d --- /dev/null +++ b/arch/arm/include/debug/sa1100.S @@ -0,0 +1,67 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* arch/arm/include/debug/sa1100.S + * + * Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks +*/ + +#define UTCR3 0x0c +#define UTDR 0x14 +#define UTSR1 0x20 +#define UTCR3_TXE 0x00000002 /* Transmit Enable */ +#define UTSR1_TBY 0x00000001 /* Transmitter BusY (read) */ +#define UTSR1_TNF 0x00000004 /* Transmit FIFO Not Full (read) */ + + .macro addruart, rp, rv, tmp + mrc p15, 0, \rp, c1, c0 + tst \rp, #1 @ MMU enabled? + moveq \rp, #0x80000000 @ physical base address + movne \rp, #0xf8000000 @ virtual address + + @ We probe for the active serial port here, coherently with + @ the comment in arch/arm/mach-sa1100/include/mach/uncompress.h. + @ We assume r1 can be clobbered. + + @ see if Ser3 is active + add \rp, \rp, #0x00050000 + ldr \rv, [\rp, #UTCR3] + tst \rv, #UTCR3_TXE + + @ if Ser3 is inactive, then try Ser1 + addeq \rp, \rp, #(0x00010000 - 0x00050000) + ldreq \rv, [\rp, #UTCR3] + tsteq \rv, #UTCR3_TXE + + @ if Ser1 is inactive, then try Ser2 + addeq \rp, \rp, #(0x00030000 - 0x00010000) + ldreq \rv, [\rp, #UTCR3] + tsteq \rv, #UTCR3_TXE + + @ clear top bits, and generate both phys and virt addresses + lsl \rp, \rp, #8 + lsr \rp, \rp, #8 + orr \rv, \rp, #0xf8000000 @ virtual + orr \rp, \rp, #0x80000000 @ physical + + .endm + + .macro senduart,rd,rx + str \rd, [\rx, #UTDR] + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy,rd,rx +1001: ldr \rd, [\rx, #UTSR1] + tst \rd, #UTSR1_TNF + beq 1001b + .endm + + .macro busyuart,rd,rx +1001: ldr \rd, [\rx, #UTSR1] + tst \rd, #UTSR1_TBY + bne 1001b + .endm diff --git a/arch/arm/include/debug/samsung.S b/arch/arm/include/debug/samsung.S new file mode 100644 index 000000000..ab474d564 --- /dev/null +++ b/arch/arm/include/debug/samsung.S @@ -0,0 +1,94 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2005, 2007 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + */ + +#include <linux/serial_s3c.h> + +/* The S5PV210/S5PC110 implementations are as belows. */ + + .macro fifo_level_s5pv210 rd, rx + ldr \rd, [\rx, # S3C2410_UFSTAT] +ARM_BE8(rev \rd, \rd) + and \rd, \rd, #S5PV210_UFSTAT_TXMASK + .endm + + .macro fifo_full_s5pv210 rd, rx + ldr \rd, [\rx, # S3C2410_UFSTAT] +ARM_BE8(rev \rd, \rd) + tst \rd, #S5PV210_UFSTAT_TXFULL + .endm + +/* The S3C2440 implementations are used by default as they are the + * most widely re-used */ + + .macro fifo_level_s3c2440 rd, rx + ldr \rd, [\rx, # S3C2410_UFSTAT] +ARM_BE8(rev \rd, \rd) + and \rd, \rd, #S3C2440_UFSTAT_TXMASK + .endm + +#ifndef fifo_level +#define fifo_level fifo_level_s3c2440 +#endif + + .macro fifo_full_s3c2440 rd, rx + ldr \rd, [\rx, # S3C2410_UFSTAT] +ARM_BE8(rev \rd, \rd) + tst \rd, #S3C2440_UFSTAT_TXFULL + .endm + +#ifndef fifo_full +#define fifo_full fifo_full_s3c2440 +#endif + + .macro senduart,rd,rx + strb \rd, [\rx, # S3C2410_UTXH] + .endm + + .macro busyuart, rd, rx + ldr \rd, [\rx, # S3C2410_UFCON] +ARM_BE8(rev \rd, \rd) + tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled? + beq 1001f @ + @ FIFO enabled... +1003: + fifo_full \rd, \rx + bne 1003b + b 1002f + +1001: + @ busy waiting for non fifo + ldr \rd, [\rx, # S3C2410_UTRSTAT] +ARM_BE8(rev \rd, \rd) + tst \rd, #S3C2410_UTRSTAT_TXFE + beq 1001b + +1002: @ exit busyuart + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy,rd,rx + ldr \rd, [\rx, # S3C2410_UFCON] +ARM_BE8(rev \rd, \rd) + tst \rd, #S3C2410_UFCON_FIFOMODE @ fifo enabled? + beq 1001f @ + @ FIFO enabled... +1003: + fifo_level \rd, \rx + teq \rd, #0 + bne 1003b + b 1002f +1001: + @ idle waiting for non fifo + ldr \rd, [\rx, # S3C2410_UTRSTAT] +ARM_BE8(rev \rd, \rd) + tst \rd, #S3C2410_UTRSTAT_TXFE + beq 1001b + +1002: @ exit busyuart + .endm diff --git a/arch/arm/include/debug/sirf.S b/arch/arm/include/debug/sirf.S new file mode 100644 index 000000000..3612c7b9c --- /dev/null +++ b/arch/arm/include/debug/sirf.S @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * arch/arm/mach-prima2/include/mach/debug-macro.S + * + * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company. + */ + +#define SIRF_LLUART_TXFIFO_STATUS 0x0114 +#define SIRF_LLUART_TXFIFO_DATA 0x0118 + +#define SIRF_LLUART_TXFIFO_FULL (1 << 5) + +#ifdef CONFIG_DEBUG_SIRFATLAS7_UART0 +#define SIRF_LLUART_TXFIFO_EMPTY (1 << 8) +#else +#define SIRF_LLUART_TXFIFO_EMPTY (1 << 6) +#endif + + + .macro addruart, rp, rv, tmp + ldr \rp, =CONFIG_DEBUG_UART_PHYS @ physical + ldr \rv, =CONFIG_DEBUG_UART_VIRT @ virtual + .endm + + .macro senduart,rd,rx + str \rd, [\rx, #SIRF_LLUART_TXFIFO_DATA] + .endm + + .macro busyuart,rd,rx + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy,rd,rx +1001: ldr \rd, [\rx, #SIRF_LLUART_TXFIFO_STATUS] + tst \rd, #SIRF_LLUART_TXFIFO_EMPTY + beq 1001b + .endm + diff --git a/arch/arm/include/debug/sti.S b/arch/arm/include/debug/sti.S new file mode 100644 index 000000000..72d052511 --- /dev/null +++ b/arch/arm/include/debug/sti.S @@ -0,0 +1,61 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * arch/arm/include/debug/sti.S + * + * Debugging macro include header + * Copyright (C) 2013 STMicroelectronics (R&D) Limited. + */ + +#define STIH41X_COMMS_BASE 0xfed00000 +#define STIH41X_ASC2_BASE (STIH41X_COMMS_BASE+0x32000) + +#define STIH41X_SBC_LPM_BASE 0xfe400000 +#define STIH41X_SBC_COMMS_BASE (STIH41X_SBC_LPM_BASE + 0x100000) +#define STIH41X_SBC_ASC1_BASE (STIH41X_SBC_COMMS_BASE + 0x31000) + + +#define VIRT_ADDRESS(x) (x - 0x1000000) + +#if IS_ENABLED(CONFIG_STIH41X_DEBUG_ASC2) +#define DEBUG_LL_UART_BASE STIH41X_ASC2_BASE +#endif + +#if IS_ENABLED(CONFIG_STIH41X_DEBUG_SBC_ASC1) +#define DEBUG_LL_UART_BASE STIH41X_SBC_ASC1_BASE +#endif + +#ifndef DEBUG_LL_UART_BASE +#error "DEBUG UART is not Configured" +#endif + +#define ASC_TX_BUF_OFF 0x04 +#define ASC_CTRL_OFF 0x0c +#define ASC_STA_OFF 0x14 + +#define ASC_STA_TX_FULL (1<<9) +#define ASC_STA_TX_EMPTY (1<<1) + + + .macro addruart, rp, rv, tmp + ldr \rp, =DEBUG_LL_UART_BASE @ physical base + ldr \rv, =VIRT_ADDRESS(DEBUG_LL_UART_BASE) @ virt base + .endm + + .macro senduart,rd,rx + strb \rd, [\rx, #ASC_TX_BUF_OFF] + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy,rd,rx +1001: ldr \rd, [\rx, #ASC_STA_OFF] + tst \rd, #ASC_STA_TX_FULL + bne 1001b + .endm + + .macro busyuart,rd,rx +1001: ldr \rd, [\rx, #ASC_STA_OFF] + tst \rd, #ASC_STA_TX_EMPTY + beq 1001b + .endm diff --git a/arch/arm/include/debug/stm32.S b/arch/arm/include/debug/stm32.S new file mode 100644 index 000000000..b6d9df30e --- /dev/null +++ b/arch/arm/include/debug/stm32.S @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) STMicroelectronics SA 2017 - All Rights Reserved + * Author: Gerald Baeza <gerald.baeza@st.com> for STMicroelectronics. + */ + +#ifdef CONFIG_STM32F4_DEBUG_UART +#define STM32_USART_SR_OFF 0x00 +#define STM32_USART_TDR_OFF 0x04 +#endif + +#if defined(CONFIG_STM32F7_DEBUG_UART) || defined(CONFIG_STM32H7_DEBUG_UART) || \ + defined(CONFIG_STM32MP1_DEBUG_UART) +#define STM32_USART_SR_OFF 0x1C +#define STM32_USART_TDR_OFF 0x28 +#endif + +#define STM32_USART_TC (1 << 6) /* Tx complete */ +#define STM32_USART_TXE (1 << 7) /* Tx data reg empty */ + +.macro addruart, rp, rv, tmp + ldr \rp, =CONFIG_DEBUG_UART_PHYS @ physical base + ldr \rv, =CONFIG_DEBUG_UART_VIRT @ virt base +.endm + +.macro senduart,rd,rx + strb \rd, [\rx, #STM32_USART_TDR_OFF] +.endm + +.macro waituartcts,rd,rx +.endm + +.macro waituarttxrdy,rd,rx +1001: ldr \rd, [\rx, #(STM32_USART_SR_OFF)] @ Read Status Register + tst \rd, #STM32_USART_TXE @ TXE = 1 = tx empty + beq 1001b +.endm + +.macro busyuart,rd,rx +1001: ldr \rd, [\rx, #(STM32_USART_SR_OFF)] @ Read Status Register + tst \rd, #STM32_USART_TC @ TC = 1 = tx complete + beq 1001b +.endm diff --git a/arch/arm/include/debug/tegra.S b/arch/arm/include/debug/tegra.S new file mode 100644 index 000000000..7454480d0 --- /dev/null +++ b/arch/arm/include/debug/tegra.S @@ -0,0 +1,218 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2010,2011 Google, Inc. + * Copyright (C) 2011-2012 NVIDIA CORPORATION. All Rights Reserved. + * + * Author: + * Colin Cross <ccross@google.com> + * Erik Gilling <konkers@google.com> + * Doug Anderson <dianders@chromium.org> + * Stephen Warren <swarren@nvidia.com> + * + * Portions based on mach-omap2's debug-macro.S + * Copyright (C) 1994-1999 Russell King + */ + +#include <linux/serial_reg.h> + +#define UART_SHIFT 2 + +/* Physical addresses */ +#define TEGRA_CLK_RESET_BASE 0x60006000 +#define TEGRA_APB_MISC_BASE 0x70000000 +#define TEGRA_UARTA_BASE 0x70006000 +#define TEGRA_UARTB_BASE 0x70006040 +#define TEGRA_UARTC_BASE 0x70006200 +#define TEGRA_UARTD_BASE 0x70006300 +#define TEGRA_UARTE_BASE 0x70006400 +#define TEGRA_PMC_BASE 0x7000e400 + +#define TEGRA_CLK_RST_DEVICES_L (TEGRA_CLK_RESET_BASE + 0x04) +#define TEGRA_CLK_RST_DEVICES_H (TEGRA_CLK_RESET_BASE + 0x08) +#define TEGRA_CLK_RST_DEVICES_U (TEGRA_CLK_RESET_BASE + 0x0c) +#define TEGRA_CLK_OUT_ENB_L (TEGRA_CLK_RESET_BASE + 0x10) +#define TEGRA_CLK_OUT_ENB_H (TEGRA_CLK_RESET_BASE + 0x14) +#define TEGRA_CLK_OUT_ENB_U (TEGRA_CLK_RESET_BASE + 0x18) +#define TEGRA_PMC_SCRATCH20 (TEGRA_PMC_BASE + 0xa0) +#define TEGRA_APB_MISC_GP_HIDREV (TEGRA_APB_MISC_BASE + 0x804) + +/* + * Must be section-aligned since a section mapping is used early on. + * Must not overlap with regions in mach-tegra/io.c:tegra_io_desc[]. + */ +#define UART_VIRTUAL_BASE 0xfe800000 + +#define checkuart(rp, rv, lhu, bit, uart) \ + /* Load address of CLK_RST register */ \ + ldr rp, =TEGRA_CLK_RST_DEVICES_##lhu ; \ + /* Load value from CLK_RST register */ \ + ldr rp, [rp, #0] ; \ + /* Test UART's reset bit */ \ + tst rp, #(1 << bit) ; \ + /* If set, can't use UART; jump to save no UART */ \ + bne 90f ; \ + /* Load address of CLK_OUT_ENB register */ \ + ldr rp, =TEGRA_CLK_OUT_ENB_##lhu ; \ + /* Load value from CLK_OUT_ENB register */ \ + ldr rp, [rp, #0] ; \ + /* Test UART's clock enable bit */ \ + tst rp, #(1 << bit) ; \ + /* If clear, can't use UART; jump to save no UART */ \ + beq 90f ; \ + /* Passed all tests, load address of UART registers */ \ + ldr rp, =TEGRA_UART##uart##_BASE ; \ + /* Jump to save UART address */ \ + b 91f + + .macro addruart, rp, rv, tmp + adr \rp, 99f @ actual addr of 99f + ldr \rv, [\rp] @ linked addr is stored there + sub \rv, \rv, \rp @ offset between the two + ldr \rp, [\rp, #4] @ linked tegra_uart_config + sub \tmp, \rp, \rv @ actual tegra_uart_config + ldr \rp, [\tmp] @ Load tegra_uart_config + cmp \rp, #1 @ needs initialization? + bne 100f @ no; go load the addresses + mov \rv, #0 @ yes; record init is done + str \rv, [\tmp] + +#ifdef CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA + /* Check ODMDATA */ +10: ldr \rp, =TEGRA_PMC_SCRATCH20 + ldr \rp, [\rp, #0] @ Load PMC_SCRATCH20 + lsr \rv, \rp, #18 @ 19:18 are console type + and \rv, \rv, #3 + cmp \rv, #2 @ 2 and 3 mean DCC, UART + beq 11f @ some boards swap the meaning + cmp \rv, #3 @ so accept either + bne 90f +11: lsr \rv, \rp, #15 @ 17:15 are UART ID + and \rv, #7 + cmp \rv, #0 @ UART 0? + beq 20f + cmp \rv, #1 @ UART 1? + beq 21f + cmp \rv, #2 @ UART 2? + beq 22f + cmp \rv, #3 @ UART 3? + beq 23f + cmp \rv, #4 @ UART 4? + beq 24f + b 90f @ invalid +#endif + +#if defined(CONFIG_TEGRA_DEBUG_UARTA) || \ + defined(CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA) + /* Check UART A validity */ +20: checkuart(\rp, \rv, L, 6, A) +#endif + +#if defined(CONFIG_TEGRA_DEBUG_UARTB) || \ + defined(CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA) + /* Check UART B validity */ +21: checkuart(\rp, \rv, L, 7, B) +#endif + +#if defined(CONFIG_TEGRA_DEBUG_UARTC) || \ + defined(CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA) + /* Check UART C validity */ +22: checkuart(\rp, \rv, H, 23, C) +#endif + +#if defined(CONFIG_TEGRA_DEBUG_UARTD) || \ + defined(CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA) + /* Check UART D validity */ +23: checkuart(\rp, \rv, U, 1, D) +#endif + +#if defined(CONFIG_TEGRA_DEBUG_UARTE) || \ + defined(CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA) + /* Check UART E validity */ +24: + checkuart(\rp, \rv, U, 2, E) +#endif + + /* No valid UART found */ +90: mov \rp, #0 + /* fall through */ + + /* Record whichever UART we chose */ +91: str \rp, [\tmp, #4] @ Store in tegra_uart_phys + cmp \rp, #0 @ Valid UART address? + bne 92f @ Yes, go process it + str \rp, [\tmp, #8] @ Store 0 in tegra_uart_virt + b 100f @ Done +92: and \rv, \rp, #0xffffff @ offset within 1MB section + add \rv, \rv, #UART_VIRTUAL_BASE + str \rv, [\tmp, #8] @ Store in tegra_uart_virt + b 100f + + .align +99: .word . +#if defined(ZIMAGE) + .word . + 4 +/* + * Storage for the state maintained by the macro. + * + * In the kernel proper, this data is located in arch/arm/mach-tegra/tegra.c. + * That's because this header is included from multiple files, and we only + * want a single copy of the data. In particular, the UART probing code above + * assumes it's running using physical addresses. This is true when this file + * is included from head.o, but not when included from debug.o. So we need + * to share the probe results between the two copies, rather than having + * to re-run the probing again later. + * + * In the decompressor, we put the storage right here, since common.c + * isn't included in the decompressor build. This storage data gets put in + * .text even though it's really data, since .data is discarded from the + * decompressor. Luckily, .text is writeable in the decompressor, unless + * CONFIG_ZBOOT_ROM. That dependency is handled in arch/arm/Kconfig.debug. + */ + /* Debug UART initialization required */ + .word 1 + /* Debug UART physical address */ + .word 0 + /* Debug UART virtual address */ + .word 0 +#else + .word tegra_uart_config +#endif + .ltorg + + /* Load previously selected UART address */ +100: ldr \rp, [\tmp, #4] @ Load tegra_uart_phys + ldr \rv, [\tmp, #8] @ Load tegra_uart_virt + .endm + +/* + * Code below is swiped from <asm/hardware/debug-8250.S>, but add an extra + * check to make sure that the UART address is actually valid. + */ + + .macro senduart, rd, rx + cmp \rx, #0 + strbne \rd, [\rx, #UART_TX << UART_SHIFT] +1001: + .endm + + .macro busyuart, rd, rx + cmp \rx, #0 + beq 1002f +1001: ldrb \rd, [\rx, #UART_LSR << UART_SHIFT] + and \rd, \rd, #UART_LSR_THRE + teq \rd, #UART_LSR_THRE + bne 1001b +1002: + .endm + + .macro waituartcts, rd, rx + cmp \rx, #0 + beq 1002f +1001: ldrb \rd, [\rx, #UART_MSR << UART_SHIFT] + tst \rd, #UART_MSR_CTS + beq 1001b +1002: + .endm + + .macro waituarttxrdy,rd,rx + .endm diff --git a/arch/arm/include/debug/uncompress.h b/arch/arm/include/debug/uncompress.h new file mode 100644 index 000000000..ff0b22729 --- /dev/null +++ b/arch/arm/include/debug/uncompress.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifdef CONFIG_DEBUG_UNCOMPRESS +extern void putc(int c); +#else +static inline void putc(int c) {} +#endif +static inline void flush(void) {} +static inline void arch_decomp_setup(void) {} diff --git a/arch/arm/include/debug/ux500.S b/arch/arm/include/debug/ux500.S new file mode 100644 index 000000000..c51690094 --- /dev/null +++ b/arch/arm/include/debug/ux500.S @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Debugging macro include header + * + * Copyright (C) 2009 ST-Ericsson + */ + + +#if CONFIG_UX500_DEBUG_UART > 2 +#error Invalid Ux500 debug UART +#endif + +/* + * DEBUG_LL only works if only one SOC is built in. We don't use #else below + * in order to get "__UX500_UART redefined" warnings if more than one SOC is + * built, so that there's some hint during the build that something is wrong. + */ + +#ifdef CONFIG_UX500_SOC_DB8500 +#define U8500_UART0_PHYS_BASE (0x80120000) +#define U8500_UART1_PHYS_BASE (0x80121000) +#define U8500_UART2_PHYS_BASE (0x80007000) +#define __UX500_PHYS_UART(n) U8500_UART##n##_PHYS_BASE +#endif + +#if !defined(__UX500_PHYS_UART) +#error Unknown SOC +#endif + +#define UX500_PHYS_UART(n) __UX500_PHYS_UART(n) +#define UART_PHYS_BASE UX500_PHYS_UART(CONFIG_UX500_DEBUG_UART) +#define UART_VIRT_BASE (0xfff07000) + + .macro addruart, rp, rv, tmp + ldr \rp, =UART_PHYS_BASE @ no, physical address + ldr \rv, =UART_VIRT_BASE @ yes, virtual address + .endm + +#include <debug/pl01x.S> diff --git a/arch/arm/include/debug/vexpress.S b/arch/arm/include/debug/vexpress.S new file mode 100644 index 000000000..ccb22e9a8 --- /dev/null +++ b/arch/arm/include/debug/vexpress.S @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* arch/arm/mach-realview/include/mach/debug-macro.S + * + * Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks + */ + +#define DEBUG_LL_PHYS_BASE 0x10000000 +#define DEBUG_LL_UART_OFFSET 0x00009000 + +#define DEBUG_LL_PHYS_BASE_RS1 0x1c000000 +#define DEBUG_LL_UART_OFFSET_RS1 0x00090000 + +#define DEBUG_LL_UART_PHYS_CRX 0xb0090000 + +#define DEBUG_LL_VIRT_BASE 0xf8000000 + +#if defined(CONFIG_DEBUG_VEXPRESS_UART0_DETECT) + + .macro addruart,rp,rv,tmp + .arch armv7-a + + @ Make an educated guess regarding the memory map: + @ - the original A9 core tile (based on ARM Cortex-A9 r0p1) + @ should use UART at 0x10009000 + @ - all other (RS1 complaint) tiles use UART mapped + @ at 0x1c090000 + mrc p15, 0, \rp, c0, c0, 0 + movw \rv, #0xc091 + movt \rv, #0x410f + cmp \rp, \rv + + @ Original memory map + moveq \rp, #DEBUG_LL_UART_OFFSET + orreq \rv, \rp, #DEBUG_LL_VIRT_BASE + orreq \rp, \rp, #DEBUG_LL_PHYS_BASE + + @ RS1 memory map + movne \rp, #DEBUG_LL_UART_OFFSET_RS1 + orrne \rv, \rp, #DEBUG_LL_VIRT_BASE + orrne \rp, \rp, #DEBUG_LL_PHYS_BASE_RS1 + + .endm + +#include <debug/pl01x.S> +#endif diff --git a/arch/arm/include/debug/vf.S b/arch/arm/include/debug/vf.S new file mode 100644 index 000000000..035bcbf11 --- /dev/null +++ b/arch/arm/include/debug/vf.S @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright 2013 Freescale Semiconductor, Inc. + */ + +#define VF_UART0_BASE_ADDR 0x40027000 +#define VF_UART1_BASE_ADDR 0x40028000 +#define VF_UART2_BASE_ADDR 0x40029000 +#define VF_UART3_BASE_ADDR 0x4002a000 +#define VF_UART_BASE_ADDR(n) VF_UART##n##_BASE_ADDR +#define VF_UART_BASE(n) VF_UART_BASE_ADDR(n) +#define VF_UART_PHYSICAL_BASE VF_UART_BASE(CONFIG_DEBUG_VF_UART_PORT) + +#define VF_UART_VIRTUAL_BASE 0xfe000000 + + .macro addruart, rp, rv, tmp + ldr \rp, =VF_UART_PHYSICAL_BASE @ physical + and \rv, \rp, #0xffffff @ offset within 16MB section + add \rv, \rv, #VF_UART_VIRTUAL_BASE + .endm + + .macro senduart, rd, rx + strb \rd, [\rx, #0x7] @ Data Register + .endm + + .macro busyuart, rd, rx +1001: ldrb \rd, [\rx, #0x4] @ Status Register 1 + tst \rd, #1 << 6 @ TC + beq 1001b @ wait until transmit done + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy,rd,rx + .endm diff --git a/arch/arm/include/debug/vt8500.S b/arch/arm/include/debug/vt8500.S new file mode 100644 index 000000000..d01094fdb --- /dev/null +++ b/arch/arm/include/debug/vt8500.S @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Debugging macro include header + * + * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com> + * Moved from arch/arm/mach-vt8500/include/mach/debug-macro.S + * Minor changes for readability. + */ + +#define DEBUG_LL_PHYS_BASE 0xD8000000 +#define DEBUG_LL_VIRT_BASE 0xF8000000 +#define DEBUG_LL_UART_OFFSET 0x00200000 + +#if defined(CONFIG_DEBUG_VT8500_UART0) + .macro addruart, rp, rv, tmp + mov \rp, #DEBUG_LL_UART_OFFSET + orr \rv, \rp, #DEBUG_LL_VIRT_BASE + orr \rp, \rp, #DEBUG_LL_PHYS_BASE + .endm + + .macro senduart,rd,rx + strb \rd, [\rx, #0] + .endm + + .macro busyuart,rd,rx +1001: ldr \rd, [\rx, #0x1c] + ands \rd, \rd, #0x2 + bne 1001b + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy,rd,rx + .endm + +#endif diff --git a/arch/arm/include/debug/zynq.S b/arch/arm/include/debug/zynq.S new file mode 100644 index 000000000..5d42cc35e --- /dev/null +++ b/arch/arm/include/debug/zynq.S @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Debugging macro include header + * + * Copyright (C) 2011 Xilinx + */ +#define UART_CR_OFFSET 0x00 /* Control Register [8:0] */ +#define UART_SR_OFFSET 0x2C /* Channel Status [11:0] */ +#define UART_FIFO_OFFSET 0x30 /* FIFO [15:0] or [7:0] */ + +#define UART_SR_TXFULL 0x00000010 /* TX FIFO full */ +#define UART_SR_TXEMPTY 0x00000008 /* TX FIFO empty */ + +#define UART0_PHYS 0xE0000000 +#define UART0_VIRT 0xF0800000 +#define UART1_PHYS 0xE0001000 +#define UART1_VIRT 0xF0801000 + +#if IS_ENABLED(CONFIG_DEBUG_ZYNQ_UART1) +# define LL_UART_PADDR UART1_PHYS +# define LL_UART_VADDR UART1_VIRT +#else +# define LL_UART_PADDR UART0_PHYS +# define LL_UART_VADDR UART0_VIRT +#endif + + .macro addruart, rp, rv, tmp + ldr \rp, =LL_UART_PADDR @ physical + ldr \rv, =LL_UART_VADDR @ virtual + .endm + + .macro senduart,rd,rx + strb \rd, [\rx, #UART_FIFO_OFFSET] @ TXDATA + .endm + + .macro waituartcts,rd,rx + .endm + + .macro waituarttxrdy,rd,rx +1001: ldr \rd, [\rx, #UART_SR_OFFSET] +ARM_BE8( rev \rd, \rd ) + tst \rd, #UART_SR_TXEMPTY + beq 1001b + .endm + + .macro busyuart,rd,rx +1002: ldr \rd, [\rx, #UART_SR_OFFSET] @ get status register +ARM_BE8( rev \rd, \rd ) + tst \rd, #UART_SR_TXFULL @ + bne 1002b @ wait if FIFO is full + .endm |