omap: Make uncompress code and DEBUG_LL code generic
Define arch_decomp_setup() the same way as some other architectures do. Use arch_id to configure the debug uart based on the machine_is by storing it into the uart scratchpad register for DEBUG_LL code to use. Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tony Lindgren
parent
4f2c49fedf
commit
0c8219f030
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@ -15,18 +15,76 @@
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#include <plat/serial.h>
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.pushsection .data
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omap_uart_phys: .word 0x0
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omap_uart_virt: .word 0x0
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.popsection
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/*
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* Note that this code won't work if the bootloader passes
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* a wrong machine ID number in r1. To debug, just hardcode
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* the desired UART phys and virt addresses temporarily into
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* the omap_uart_phys and omap_uart_virt above.
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*/
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.macro addruart, rx, tmp
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/* Use omap_uart_phys/virt if already configured */
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9: mrc p15, 0, \rx, c1, c0
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tst \rx, #1 @ MMU enabled?
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ldreq \rx, =omap_uart_phys @ physical base address
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ldrne \rx, =omap_uart_virt @ virtual base
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ldr \rx, [\rx, #0]
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cmp \rx, #0 @ is port configured?
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bne 99f @ already configured
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/* Check 7XX UART1 scratchpad register for uart to use */
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mrc p15, 0, \rx, c1, c0
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tst \rx, #1 @ MMU enabled?
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moveq \rx, #0xff000000 @ physical base address
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movne \rx, #0xfe000000 @ virtual base
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orr \rx, \rx, #0x00fb0000
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#ifdef CONFIG_OMAP_LL_DEBUG_UART3
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orr \rx, \rx, #0x00009000 @ UART 3
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#endif
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#if defined(CONFIG_OMAP_LL_DEBUG_UART2) || defined(CONFIG_OMAP_LL_DEBUG_UART3)
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orr \rx, \rx, #0x00000800 @ UART 2 & 3
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#endif
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orr \rx, \rx, #0x00fb0000 @ OMAP1UART1
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ldrb \rx, [\rx, #(UART_SCR << OMAP7XX_PORT_SHIFT)]
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cmp \rx, #0 @ anything in 7XX scratchpad?
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bne 10f @ found 7XX uart
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/* Check 15xx/16xx UART1 scratchpad register for uart to use */
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mrc p15, 0, \rx, c1, c0
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tst \rx, #1 @ MMU enabled?
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moveq \rx, #0xff000000 @ physical base address
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movne \rx, #0xfe000000 @ virtual base
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orr \rx, \rx, #0x00fb0000 @ OMAP1UART1
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ldrb \rx, [\rx, #(UART_SCR << OMAP_PORT_SHIFT)]
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/* Select the UART to use based on the UART1 scratchpad value */
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10: cmp \rx, #0 @ no port configured?
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beq 11f @ if none, try to use UART1
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cmp \rx, #OMAP1UART1
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beq 11f @ configure OMAP1UART1
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cmp \rx, #OMAP1UART2
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beq 12f @ configure OMAP1UART2
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cmp \rx, #OMAP1UART3
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beq 13f @ configure OMAP2UART3
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/* Configure the UART offset from the phys/virt base */
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11: mov \rx, #0x00fb0000 @ OMAP1UART1
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b 98f
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12: mov \rx, #0x00fb0000 @ OMAP1UART1
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orr \rx, \rx, #0x00000800 @ OMAP1UART2
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b 98f
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13: mov \rx, #0x00fb0000 @ OMAP1UART1
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orr \rx, \rx, #0x00000800 @ OMAP1UART2
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orr \rx, \rx, #0x00009000 @ OMAP1UART3
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/* Store both phys and virt address for the uart */
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98: add \rx, \rx, #0xff000000 @ phys base
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ldr \tmp, =omap_uart_phys
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str \rx, [\tmp, #0]
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sub \rx, \rx, #0xff000000 @ phys base
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add \rx, \rx, #0xfe000000 @ virt base
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ldr \tmp, =omap_uart_virt
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str \rx, [\tmp, #0]
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b 9b
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99:
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.endm
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.macro senduart,rd,rx
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@ -15,32 +15,103 @@
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#include <plat/serial.h>
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#define UART_OFFSET(addr) ((addr) & 0x00ffffff)
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.pushsection .data
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omap_uart_phys: .word 0
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omap_uart_virt: .word 0
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omap_uart_lsr: .word 0
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.popsection
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/*
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* Note that this code won't work if the bootloader passes
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* a wrong machine ID number in r1. To debug, just hardcode
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* the desired UART phys and virt addresses temporarily into
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* the omap_uart_phys and omap_uart_virt above.
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*/
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.macro addruart, rx, tmp
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/* Use omap_uart_phys/virt if already configured */
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10: mrc p15, 0, \rx, c1, c0
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tst \rx, #1 @ MMU enabled?
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ldreq \rx, =omap_uart_phys @ physical base address
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ldrne \rx, =omap_uart_virt @ virtual base address
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ldr \rx, [\rx, #0]
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cmp \rx, #0 @ is port configured?
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bne 99f @ already configured
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/* Check UART1 scratchpad register for uart to use */
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mrc p15, 0, \rx, c1, c0
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tst \rx, #1 @ MMU enabled?
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#ifdef CONFIG_ARCH_OMAP2
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moveq \rx, #0x48000000 @ physical base address
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movne \rx, #0xfa000000 @ virtual base
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orr \rx, \rx, #0x0006a000
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#ifdef CONFIG_OMAP_LL_DEBUG_UART2
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add \rx, \rx, #0x00002000 @ UART 2
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#endif
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#ifdef CONFIG_OMAP_LL_DEBUG_UART3
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add \rx, \rx, #0x00004000 @ UART 3
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#endif
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orr \rx, \rx, #0x0006a000 @ uart1 on omap2/3/4
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ldrb \rx, [\rx, #(UART_SCR << OMAP_PORT_SHIFT)] @ scratchpad
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#elif defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
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moveq \rx, #0x48000000 @ physical base address
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movne \rx, #0xfa000000 @ virtual base
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orr \rx, \rx, #0x0006a000
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#ifdef CONFIG_OMAP_LL_DEBUG_UART2
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add \rx, \rx, #0x00002000 @ UART 2
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#endif
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#ifdef CONFIG_OMAP_LL_DEBUG_UART3
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add \rx, \rx, #0x00fb0000 @ UART 3
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add \rx, \rx, #0x00006000
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#endif
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#endif
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/* Select the UART to use based on the UART1 scratchpad value */
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cmp \rx, #0 @ no port configured?
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beq 21f @ if none, try to use UART1
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cmp \rx, #OMAP2UART1 @ OMAP2/3/4UART1
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beq 21f @ configure OMAP2/3/4UART1
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cmp \rx, #OMAP2UART2 @ OMAP2/3/4UART2
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beq 22f @ configure OMAP2/3/4UART2
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cmp \rx, #OMAP2UART3 @ only on 24xx
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beq 23f @ configure OMAP2UART3
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cmp \rx, #OMAP3UART3 @ only on 34xx
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beq 33f @ configure OMAP3UART3
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cmp \rx, #OMAP4UART3 @ only on 44xx
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beq 43f @ configure OMAP4UART3
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cmp \rx, #OMAP3UART4 @ only on 36xx
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beq 34f @ configure OMAP3UART4
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cmp \rx, #OMAP4UART4 @ only on 44xx
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beq 44f @ configure OMAP4UART4
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cmp \rx, #ZOOM_UART @ only on zoom2/3
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beq 95f @ configure ZOOM_UART
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/* Configure the UART offset from the phys/virt base */
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21: mov \rx, #UART_OFFSET(OMAP2_UART1_BASE) @ omap2/3/4
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b 98f
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22: mov \rx, #UART_OFFSET(OMAP2_UART2_BASE) @ omap2/3/4
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b 98f
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23: mov \rx, #UART_OFFSET(OMAP2_UART3_BASE)
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b 98f
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33: mov \rx, #UART_OFFSET(OMAP3_UART1_BASE)
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add \rx, \rx, #0x00fb0000
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add \rx, \rx, #0x00006000 @ OMAP3_UART3_BASE
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b 98f
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34: mov \rx, #UART_OFFSET(OMAP3_UART1_BASE)
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add \rx, \rx, #0x00fb0000
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add \rx, \rx, #0x00028000 @ OMAP3_UART4_BASE
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b 98f
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43: mov \rx, #UART_OFFSET(OMAP4_UART3_BASE)
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b 98f
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44: mov \rx, #UART_OFFSET(OMAP4_UART4_BASE)
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b 98f
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95: mov \rx, #ZOOM_UART_BASE
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ldr \tmp, =omap_uart_phys
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str \rx, [\tmp, #0]
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mov \rx, #ZOOM_UART_VIRT
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ldr \tmp, =omap_uart_virt
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str \rx, [\tmp, #0]
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mov \rx, #(UART_LSR << ZOOM_PORT_SHIFT)
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ldr \tmp, =omap_uart_lsr
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str \rx, [\tmp, #0]
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b 10b
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/* Store both phys and virt address for the uart */
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98: add \rx, \rx, #0x48000000 @ phys base
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ldr \tmp, =omap_uart_phys
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str \rx, [\tmp, #0]
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sub \rx, \rx, #0x48000000 @ phys base
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add \rx, \rx, #0xfa000000 @ virt base
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ldr \tmp, =omap_uart_virt
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str \rx, [\tmp, #0]
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mov \rx, #(UART_LSR << OMAP_PORT_SHIFT)
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ldr \tmp, =omap_uart_lsr
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str \rx, [\tmp, #0]
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b 10b
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99:
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.endm
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.macro senduart,rd,rx
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.endm
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.macro busyuart,rd,rx
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1001: ldrb \rd, [\rx, #(UART_LSR << OMAP_PORT_SHIFT)]
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1001: ldr \rd, =omap_uart_lsr
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ldr \rd, [\rd, #0]
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ldrb \rd, [\rx, \rd]
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and \rd, \rd, #(UART_LSR_TEMT | UART_LSR_THRE)
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teq \rd, #(UART_LSR_TEMT | UART_LSR_THRE)
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bne 1001b
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#define OMAP2_UART3_BASE 0x4806e000
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/* OMAP3 serial ports */
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#define OMAP3_UART1_BASE 0x4806a000
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#define OMAP3_UART2_BASE 0x4806c000
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#define OMAP3_UART1_BASE OMAP2_UART1_BASE
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#define OMAP3_UART2_BASE OMAP2_UART2_BASE
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#define OMAP3_UART3_BASE 0x49020000
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#define OMAP3_UART4_BASE 0x49042000 /* Only on 36xx */
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/* OMAP4 serial ports */
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#define OMAP4_UART1_BASE 0x4806a000
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#define OMAP4_UART2_BASE 0x4806c000
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#define OMAP4_UART1_BASE OMAP2_UART1_BASE
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#define OMAP4_UART2_BASE OMAP2_UART2_BASE
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#define OMAP4_UART3_BASE 0x48020000
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#define OMAP4_UART4_BASE 0x4806e000
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/* External port on Zoom2/3 */
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#define ZOOM_UART_BASE 0x10000000
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#define ZOOM_UART_VIRT 0xfb000000
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#define OMAP_PORT_SHIFT 2
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#define OMAP7XX_PORT_SHIFT 0
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#define ZOOM_PORT_SHIFT 1
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#define OMAP1510_BASE_BAUD (12000000/16)
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#define OMAP16XX_BASE_BAUD (48000000/16)
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#define OMAP24XX_BASE_BAUD (48000000/16)
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/*
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* DEBUG_LL port encoding stored into the UART1 scratchpad register by
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* decomp_setup in uncompress.h
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*/
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#define OMAP1UART1 11
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#define OMAP1UART2 12
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#define OMAP1UART3 13
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#define OMAP2UART1 21
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#define OMAP2UART2 22
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#define OMAP2UART3 23
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#define OMAP3UART1 OMAP2UART1
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#define OMAP3UART2 OMAP2UART2
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#define OMAP3UART3 33
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#define OMAP3UART4 34 /* Only on 36xx */
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#define OMAP4UART1 OMAP2UART1
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#define OMAP4UART2 OMAP2UART2
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#define OMAP4UART3 43
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#define OMAP4UART4 44
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#define ZOOM_UART 95 /* Only on zoom2/3 */
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/* This is only used by 8250.c for omap1510 */
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#define is_omap_port(pt) ({int __ret = 0; \
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if ((pt)->port.mapbase == OMAP1_UART1_BASE || \
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@ -19,71 +19,155 @@
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#include <linux/types.h>
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#include <linux/serial_reg.h>
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#include <asm/mach-types.h>
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#include <plat/serial.h>
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unsigned int system_rev;
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static volatile u8 *uart1_base;
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static int uart1_shift;
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#define UART_OMAP_MDR1 0x08 /* mode definition register */
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#define OMAP_ID_730 0x355F
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#define OMAP_ID_850 0x362C
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#define ID_MASK 0x7fff
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#define check_port(base, shift) ((base[UART_OMAP_MDR1 << shift] & 7) == 0)
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#define omap_get_id() ((*(volatile unsigned int *)(0xfffed404)) >> 12) & ID_MASK
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static volatile u8 *uart_base;
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static int uart_shift;
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/*
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* Store the DEBUG_LL uart number into UART1 scratchpad register.
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* See also debug-macro.S, and serial.c for related code.
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*
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* Please note that we currently assume that:
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* - UART1 clocks are enabled for register access
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* - UART1 scratchpad register can be used
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*/
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static void set_uart1_scratchpad(unsigned char port)
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{
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uart1_base[UART_SCR << uart1_shift] = port;
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}
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static void putc(int c)
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{
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volatile u8 * uart = 0;
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int shift = 2;
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#ifdef CONFIG_MACH_OMAP_PALMTE
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return;
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#endif
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#ifdef CONFIG_ARCH_OMAP
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/* Will get removed in the next patch, set to OMAP3 to compile */
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#ifdef CONFIG_OMAP_LL_DEBUG_UART3
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uart = (volatile u8 *)(OMAP3_UART3_BASE);
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#elif defined(CONFIG_OMAP_LL_DEBUG_UART2)
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uart = (volatile u8 *)(OMAP3_UART2_BASE);
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#elif defined(CONFIG_OMAP_LL_DEBUG_UART1)
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uart = (volatile u8 *)(OMAP3_UART1_BASE);
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#elif defined(CONFIG_OMAP_LL_DEBUG_NONE)
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return;
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#else
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return;
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#endif
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#ifdef CONFIG_ARCH_OMAP1
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/* Determine which serial port to use */
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do {
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/* MMU is not on, so cpu_is_omapXXXX() won't work here */
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unsigned int omap_id = omap_get_id();
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if (omap_id == OMAP_ID_730 || omap_id == OMAP_ID_850)
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shift = 0;
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if (check_port(uart, shift))
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break;
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/* Silent boot if no serial ports are enabled. */
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if (!uart_base)
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return;
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} while (0);
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#endif /* CONFIG_ARCH_OMAP1 */
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#endif
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/*
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* Now, xmit each character
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*/
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while (!(uart[UART_LSR << shift] & UART_LSR_THRE))
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while (!(uart_base[UART_LSR << uart_shift] & UART_LSR_THRE))
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barrier();
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uart[UART_TX << shift] = c;
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uart_base[UART_TX << uart_shift] = c;
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}
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static inline void flush(void)
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{
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}
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/*
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* Macros to configure UART1 and debug UART
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*/
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#define _DEBUG_LL_ENTRY(mach, uart1_phys, uart1_shft, \
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dbg_uart, dbg_shft, dbg_id) \
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if (machine_is_##mach()) { \
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uart1_base = (volatile u8 *)(uart1_phys); \
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uart1_shift = (uart1_shft); \
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uart_base = (volatile u8 *)(dbg_uart); \
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uart_shift = (dbg_shft); \
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port = (dbg_id); \
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set_uart1_scratchpad(port); \
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break; \
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}
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#define DEBUG_LL_OMAP7XX(p, mach) \
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_DEBUG_LL_ENTRY(mach, OMAP1_UART1_BASE, OMAP7XX_PORT_SHIFT, \
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OMAP1_UART##p##_BASE, OMAP7XX_PORT_SHIFT, OMAP1UART##p)
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#define DEBUG_LL_OMAP1(p, mach) \
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_DEBUG_LL_ENTRY(mach, OMAP1_UART1_BASE, OMAP_PORT_SHIFT, \
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OMAP1_UART##p##_BASE, OMAP_PORT_SHIFT, OMAP1UART##p)
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#define DEBUG_LL_OMAP2(p, mach) \
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_DEBUG_LL_ENTRY(mach, OMAP2_UART1_BASE, OMAP_PORT_SHIFT, \
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OMAP2_UART##p##_BASE, OMAP_PORT_SHIFT, OMAP2UART##p)
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#define DEBUG_LL_OMAP3(p, mach) \
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_DEBUG_LL_ENTRY(mach, OMAP3_UART1_BASE, OMAP_PORT_SHIFT, \
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OMAP3_UART##p##_BASE, OMAP_PORT_SHIFT, OMAP3UART##p)
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#define DEBUG_LL_OMAP4(p, mach) \
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_DEBUG_LL_ENTRY(mach, OMAP4_UART1_BASE, OMAP_PORT_SHIFT, \
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OMAP4_UART##p##_BASE, OMAP_PORT_SHIFT, OMAP4UART##p)
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/* Zoom2/3 shift is different for UART1 and external port */
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#define DEBUG_LL_ZOOM(mach) \
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_DEBUG_LL_ENTRY(mach, OMAP2_UART1_BASE, OMAP_PORT_SHIFT, \
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ZOOM_UART_BASE, ZOOM_PORT_SHIFT, ZOOM_UART)
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static inline void __arch_decomp_setup(unsigned long arch_id)
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{
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int port = 0;
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/*
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* Initialize the port based on the machine ID from the bootloader.
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* Note that we're using macros here instead of switch statement
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* as machine_is functions are optimized out for the boards that
|
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* are not selected.
|
||||
*/
|
||||
do {
|
||||
/* omap7xx/8xx based boards using UART1 with shift 0 */
|
||||
DEBUG_LL_OMAP7XX(1, herald);
|
||||
DEBUG_LL_OMAP7XX(1, omap_perseus2);
|
||||
|
||||
/* omap15xx/16xx based boards using UART1 */
|
||||
DEBUG_LL_OMAP1(1, ams_delta);
|
||||
DEBUG_LL_OMAP1(1, nokia770);
|
||||
DEBUG_LL_OMAP1(1, omap_h2);
|
||||
DEBUG_LL_OMAP1(1, omap_h3);
|
||||
DEBUG_LL_OMAP1(1, omap_innovator);
|
||||
DEBUG_LL_OMAP1(1, omap_osk);
|
||||
DEBUG_LL_OMAP1(1, omap_palmte);
|
||||
DEBUG_LL_OMAP1(1, omap_palmz71);
|
||||
|
||||
/* omap15xx/16xx based boards using UART2 */
|
||||
DEBUG_LL_OMAP1(2, omap_palmtt);
|
||||
|
||||
/* omap15xx/16xx based boards using UART3 */
|
||||
DEBUG_LL_OMAP1(3, sx1);
|
||||
|
||||
/* omap2 based boards using UART1 */
|
||||
DEBUG_LL_OMAP2(1, omap2evm);
|
||||
DEBUG_LL_OMAP2(1, omap_2430sdp);
|
||||
DEBUG_LL_OMAP2(1, omap_apollon);
|
||||
DEBUG_LL_OMAP2(1, omap_h4);
|
||||
|
||||
/* omap2 based boards using UART3 */
|
||||
DEBUG_LL_OMAP2(3, nokia_n800);
|
||||
DEBUG_LL_OMAP2(3, nokia_n810);
|
||||
DEBUG_LL_OMAP2(3, nokia_n810_wimax);
|
||||
|
||||
/* omap3 based boards using UART1 */
|
||||
DEBUG_LL_OMAP2(1, omap3evm);
|
||||
DEBUG_LL_OMAP3(1, omap_3430sdp);
|
||||
DEBUG_LL_OMAP3(1, omap_3630sdp);
|
||||
|
||||
/* omap3 based boards using UART3 */
|
||||
DEBUG_LL_OMAP3(3, cm_t35);
|
||||
DEBUG_LL_OMAP3(3, igep0020);
|
||||
DEBUG_LL_OMAP3(3, nokia_rx51);
|
||||
DEBUG_LL_OMAP3(3, omap3517evm);
|
||||
DEBUG_LL_OMAP3(3, omap3_beagle);
|
||||
DEBUG_LL_OMAP3(3, omap3_pandora);
|
||||
DEBUG_LL_OMAP3(3, omap_ldp);
|
||||
DEBUG_LL_OMAP3(3, overo);
|
||||
DEBUG_LL_OMAP3(3, touchbook);
|
||||
|
||||
/* omap4 based boards using UART3 */
|
||||
DEBUG_LL_OMAP4(3, omap_4430sdp);
|
||||
|
||||
/* zoom2/3 external uart */
|
||||
DEBUG_LL_ZOOM(omap_zoom2);
|
||||
DEBUG_LL_ZOOM(omap_zoom3);
|
||||
|
||||
} while (0);
|
||||
}
|
||||
|
||||
#define arch_decomp_setup() __arch_decomp_setup(arch_id)
|
||||
|
||||
/*
|
||||
* nothing to do
|
||||
*/
|
||||
#define arch_decomp_setup()
|
||||
#define arch_decomp_wdog()
|
||||
|
|
|
|||
Reference in New Issue