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ARM: debug: Use generic 8250 debug_ll for omap2 and omap3/4/5 common uarts

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We want to use generic 8250 debug_ll code to get DEBUG_UNCOMPRESS
working and to simplify the code. The old debug_ll code is no longer
needed and the machine ID based detection is no longer used.

Note that for most part there's no need to keep DEBUG_LL enabled.
We now have CONFIG_SERIAL_EARLYCON working very early as long as
the kernel cmdline has "earlycon" in it and the board specific dts
file has chosen configured with with the port using stdout-path.

Cc: Hoeun Ryu <hoeun.ryu@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tony Lindgren
2017-07-16 22:10:13 -07:00
parent 5771a8c088
commit d2b310b023
2 changed files with 13 additions and 26 deletions
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23
arch/arm/include/debug/omap2plus.S
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@@ -12,21 +12,12 @@
#include <linux/serial_reg.h>
/* OMAP2 serial ports */
#define OMAP2_UART1_BASE 0x4806a000
#define OMAP2_UART2_BASE 0x4806c000
#define OMAP2_UART3_BASE 0x4806e000
/* OMAP3 serial ports */
#define OMAP3_UART1_BASE OMAP2_UART1_BASE
#define OMAP3_UART2_BASE OMAP2_UART2_BASE
#define OMAP3_UART3_BASE 0x49020000
#define OMAP3_UART4_BASE 0x49042000 /* Only on 36xx */
#define OMAP3_UART4_AM35XX_BASE 0x4809E000 /* Only on AM35xx */
/* OMAP4 serial ports */
#define OMAP4_UART1_BASE OMAP2_UART1_BASE
#define OMAP4_UART2_BASE OMAP2_UART2_BASE
#define OMAP4_UART3_BASE 0x48020000
#define OMAP4_UART4_BASE 0x4806e000
@@ -42,8 +33,6 @@
#define AM33XX_UART1_BASE 0x44E09000
/* OMAP5 serial ports */
#define OMAP5_UART1_BASE OMAP2_UART1_BASE
#define OMAP5_UART2_BASE OMAP2_UART2_BASE
#define OMAP5_UART3_BASE OMAP4_UART3_BASE
#define OMAP5_UART4_BASE OMAP4_UART4_BASE
#define OMAP5_UART5_BASE 0x48066000
@@ -79,18 +68,6 @@ omap_uart_lsr: .word 0
bne 100f @ already configured
/* Configure the UART offset from the phys/virt base */
#ifdef CONFIG_DEBUG_OMAP2UART1
mov \rp, #UART_OFFSET(OMAP2_UART1_BASE) @ omap2/3/4
b 98f
#endif
#ifdef CONFIG_DEBUG_OMAP2UART2
mov \rp, #UART_OFFSET(OMAP2_UART2_BASE) @ omap2/3/4
b 98f
#endif
#ifdef CONFIG_DEBUG_OMAP2UART3
mov \rp, #UART_OFFSET(OMAP2_UART3_BASE)
b 98f
#endif
#ifdef CONFIG_DEBUG_OMAP3UART3
mov \rp, #UART_OFFSET(OMAP3_UART1_BASE)
add \rp, \rp, #0x00fb0000