Import xPack OpenOCD 0.12.0-7 and GNU Make 4.4.1 from x86_64-w64-mingw32.

2026-09-14 16:20:05 +08:00
parent 2b73c30a9d
commit 534c017e0f
1133 changed files with 74341 additions and 0 deletions
@@ -0,0 +1,75 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# Config for Raspberry Pi used as a bitbang adapter.
+# https://www.raspberrypi.com/documentation/computers/raspberry-pi.html
+
+# Supports all models with 40-pin or 26-pin GPIO connector up to Raspberry Pi 4 B
+# also supports Raspberry Pi Zero, Zero W and Zero 2 W.
+
+# Adapter speed calibration is computed from cpufreq/scaling_max_freq.
+# Adjusts automatically if CPU is overclocked.
+
+adapter driver bcm2835gpio
+
+proc read_file { name } {
+	if {[catch {open $name r} fd]} {
+		return ""
+	}
+	set result [read $fd]
+	close $fd
+	return $result
+}
+
+proc measure_clock {} {
+	set result [exec vcgencmd measure_clock arm]
+	set clock_hz [lindex [split $result "="] 1]
+	expr { $clock_hz / 1000 }
+}
+
+proc get_max_cpu_clock { default } {
+	set clock [read_file /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq]
+	if { $clock > 100000 } {
+		return $clock
+	}
+
+	# cpufreq not available. As the last resort try Broadcom's proprietary utility
+	if {![catch measure_clock clock] && $clock > 100000} {
+		return $clock
+	}
+
+	echo "Warn : Host CPU clock unknown."
+	echo "Warn : Using the highest possible value $default kHz as a safe default."
+	echo "Warn : Expect JTAG/SWD clock significantly slower than requested."
+
+	return $default
+}
+
+set compat [read_file /proc/device-tree/compatible]
+set clocks_per_timing_loop 4
+
+if {[string match *bcm2711* $compat]} {
+	set speed_offset 52
+} elseif {[string match *bcm2837* $compat] || [string match *bcm2710* $compat]} {
+	set speed_offset 34
+} elseif {[string match *bcm2836* $compat] || [string match *bcm2709* $compat]} {
+	set speed_offset 36
+} elseif {[string match *bcm2835* $compat] || [string match *bcm2708* $compat]} {
+	set clocks_per_timing_loop 6
+	set speed_offset 32
+} elseif {[string match *bcm2712* $compat]} {
+	echo "Error: Raspberrypi Pi 5 has moved GPIOs to PCIe connected RP1 chip."
+	echo "Error: Native GPIO handling is not supported, use 'raspberrypi5-gpiod.cfg'"
+	shutdown
+} else {
+	set speed_offset 32
+	echo "Warn : Unknown type of the host SoC. Expect JTAG/SWD clock slower than requested."
+}
+
+set clock [get_max_cpu_clock 2000000]
+set speed_coeff [expr { $clock / $clocks_per_timing_loop }]
+
+# Transition delay calculation: SPEED_COEFF/khz - SPEED_OFFSET
+# The coefficients depend on system clock and CPU frequency scaling.
+bcm2835gpio speed_coeffs $speed_coeff $speed_offset
+
+source [find interface/raspberrypi-gpio-connector.cfg]