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msm: Support DEBUG_LL on MSM8660 and MSM8960

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Add support for DEBUG_LL on the 8660 and 8960 development boards.
While we're here cleanup the uncompress.h code a bit. Avoid
the use of readl/writel as those are Linux specific APIs that
aren't guaranteed to work in the decompressor.

Cc: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
This commit is contained in:
Stephen Boyd
2011-11-08 10:33:04 -08:00
committed by David Brown
parent 650e3f0d66
commit a3d3ef9d4f
7 changed files with 95 additions and 11 deletions
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32
arch/arm/mach-msm/include/mach/debug-macro.S
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@@ -1,6 +1,7 @@
/*
*
* Copyright (C) 2007 Google, Inc.
* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
* Author: Brian Swetland <swetland@google.com>
*
* This software is licensed under the terms of the GNU General Public
@@ -24,17 +25,42 @@
#endif
.endm
.macro senduart,rd,rx
.macro senduart, rd, rx
#ifdef CONFIG_MSM_HAS_DEBUG_UART_HS
@ Write the 1 character to UARTDM_TF
str \rd, [\rx, #0x70]
#else
teq \rx, #0
strne \rd, [\rx, #0x0C]
#endif
.endm
.macro waituart,rd,rx
.macro waituart, rd, rx
#ifdef CONFIG_MSM_HAS_DEBUG_UART_HS
@ check for TX_EMT in UARTDM_SR
ldr \rd, [\rx, #0x08]
tst \rd, #0x08
bne 1002f
@ wait for TXREADY in UARTDM_ISR
1001: ldr \rd, [\rx, #0x14]
tst \rd, #0x80
beq 1001b
1002:
@ Clear TX_READY by writing to the UARTDM_CR register
mov \rd, #0x300
str \rd, [\rx, #0x10]
@ Write 0x1 to NCF register
mov \rd, #0x1
str \rd, [\rx, #0x40]
@ UARTDM reg. Read to induce delay
ldr \rd, [\rx, #0x08]
#else
@ wait for TX_READY
1001: ldr \rd, [\rx, #0x08]
tst \rd, #0x04
beq 1001b
#endif
.endm
.macro busyuart,rd,rx
.macro busyuart, rd, rx
.endm