[ARM] 5412/1: XSCALE: add ice dcc support (c633c3cf) · Commits · e / devices / android_kernel_fairphone_FP5

arch/arm/Kconfig.debug

+1 −1

Original line number	Diff line number	Diff line
		@@ -77,7 +77,7 @@ config DEBUG_ICEDCC
		Say Y here if you want the debug print routines to direct their
		output to the EmbeddedICE macrocell's DCC channel using
		co-processor 14. This is known to work on the ARM9 style ICE
		channel.
		channel and on the XScale with the PEEDI.

		It does include a timeout to ensure that the system does not
		totally freeze when there is nothing connected to read.

+6 −0

Original line number	Diff line number	Diff line
		@@ -27,6 +27,12 @@
		.macro writeb, ch, rb
		mcr p14, 0, \ch, c0, c5, 0
		.endm
		#elif defined(CONFIG_CPU_XSCALE)
		.macro loadsp, rb
		.endm
		.macro writeb, ch, rb
		mcr p14, 0, \ch, c8, c0, 0
		.endm
		#else
		.macro loadsp, rb
		.endm

+15 −0

Original line number	Diff line number	Diff line
		@@ -46,6 +46,21 @@ static void icedcc_putc(int ch)

		asm("mcr p14, 0, %0, c0, c5, 0" : : "r" (ch));
		}
		#elif defined(CONFIG_CPU_XSCALE)

		static void icedcc_putc(int ch)
		{
		int status, i = 0x4000000;

		do {
		if (--i < 0)
		return;

		asm volatile ("mrc p14, 0, %0, c14, c0, 0" : "=r" (status));
		} while (status & (1 << 28));

		asm("mcr p14, 0, %0, c8, c0, 0" : : "r" (ch));
		}

		#else

+27 −0

Original line number	Diff line number	Diff line
		@@ -49,6 +49,33 @@
		1002:
		.endm

		#elif defined(CONFIG_CPU_XSCALE)

		.macro addruart, rx
		.endm

		.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 waituart, 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 addruart, rx