diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/arch/arm/mach-versatile | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/arch/arm/mach-versatile')
| -rw-r--r-- | roms/u-boot/arch/arm/mach-versatile/Makefile | 7 | ||||
| -rw-r--r-- | roms/u-boot/arch/arm/mach-versatile/reset.S | 28 | ||||
| -rw-r--r-- | roms/u-boot/arch/arm/mach-versatile/timer.c | 63 |
3 files changed, 98 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/mach-versatile/Makefile b/roms/u-boot/arch/arm/mach-versatile/Makefile new file mode 100644 index 000000000..858ca9414 --- /dev/null +++ b/roms/u-boot/arch/arm/mach-versatile/Makefile @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# (C) Copyright 2000-2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. + +obj-y = timer.o +obj-y += reset.o diff --git a/roms/u-boot/arch/arm/mach-versatile/reset.S b/roms/u-boot/arch/arm/mach-versatile/reset.S new file mode 100644 index 000000000..c7f1225fb --- /dev/null +++ b/roms/u-boot/arch/arm/mach-versatile/reset.S @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * armboot - Startup Code for ARM926EJS CPU-core + * + * Copyright (c) 2003 Texas Instruments + * + * ----- Adapted for OMAP1610 OMAP730 from ARM925t code ------ + * + * Copyright (c) 2001 Marius Gröger <mag@sysgo.de> + * Copyright (c) 2002 Alex Züpke <azu@sysgo.de> + * Copyright (c) 2002 Gary Jennejohn <garyj@denx.de> + * Copyright (c) 2003 Richard Woodruff <r-woodruff2@ti.com> + * Copyright (c) 2003 Kshitij <kshitij@ti.com> + */ + + .align 5 +.globl reset_cpu +reset_cpu: + ldr r1, rstctl1 /* get clkm1 reset ctl */ + mov r3, #0x0 + strh r3, [r1] /* clear it */ + mov r3, #0x8 + strh r3, [r1] /* force dsp+arm reset */ +_loop_forever: + b _loop_forever + +rstctl1: + .word 0xfffece10 diff --git a/roms/u-boot/arch/arm/mach-versatile/timer.c b/roms/u-boot/arch/arm/mach-versatile/timer.c new file mode 100644 index 000000000..a0babce7b --- /dev/null +++ b/roms/u-boot/arch/arm/mach-versatile/timer.c @@ -0,0 +1,63 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2003 + * Texas Instruments <www.ti.com> + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Marius Groeger <mgroeger@sysgo.de> + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Alex Zuepke <azu@sysgo.de> + * + * (C) Copyright 2002-2004 + * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de> + * + * (C) Copyright 2004 + * Philippe Robin, ARM Ltd. <philippe.robin@arm.com> + */ + +#include <common.h> + +#define TIMER_ENABLE (1 << 7) +#define TIMER_MODE_MSK (1 << 6) +#define TIMER_MODE_FR (0 << 6) +#define TIMER_MODE_PD (1 << 6) + +#define TIMER_INT_EN (1 << 5) +#define TIMER_PRS_MSK (3 << 2) +#define TIMER_PRS_8S (1 << 3) +#define TIMER_SIZE_MSK (1 << 2) +#define TIMER_ONE_SHT (1 << 0) + +int timer_init (void) +{ + ulong tmr_ctrl_val; + + /* 1st disable the Timer */ + tmr_ctrl_val = *(volatile ulong *)(CONFIG_SYS_TIMERBASE + 8); + tmr_ctrl_val &= ~TIMER_ENABLE; + *(volatile ulong *)(CONFIG_SYS_TIMERBASE + 8) = tmr_ctrl_val; + + /* + * The Timer Control Register has one Undefined/Shouldn't Use Bit + * So we should do read/modify/write Operation + */ + + /* + * Timer Mode : Free Running + * Interrupt : Disabled + * Prescale : 8 Stage, Clk/256 + * Tmr Siz : 16 Bit Counter + * Tmr in Wrapping Mode + */ + tmr_ctrl_val = *(volatile ulong *)(CONFIG_SYS_TIMERBASE + 8); + tmr_ctrl_val &= ~(TIMER_MODE_MSK | TIMER_INT_EN | TIMER_PRS_MSK | TIMER_SIZE_MSK | TIMER_ONE_SHT ); + tmr_ctrl_val |= (TIMER_ENABLE | TIMER_PRS_8S); + + *(volatile ulong *)(CONFIG_SYS_TIMERBASE + 8) = tmr_ctrl_val; + + return 0; +} + |