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    SubjectRe: PPC KGDB changes and some help?
    On Wed, Jan 21, 2004 at 12:21:28PM -0700, Tom Rini wrote:
    > On Wed, Jan 21, 2004 at 11:42:17AM -0700, Tom Rini wrote:
    > > On Wed, Jan 21, 2004 at 10:23:12PM +0530, Amit S. Kale wrote:
    > >
    > > > Hi,
    > > >
    > > > Here it is: ppc kgdb from timesys kernel is available at
    > > > http://kgdb.sourceforge.net/kgdb-2/linux-2.6.1-kgdb-2.1.0.tar.bz2
    > > >
    > > > This is my attempt at extracting kgdb from TimeSys kernel. It works well in
    > > > TimeSys kernel, so blame me if above patch doesn't work.
    > >
    > > Okay, here's my first patch against this.
    >
    > And dependant upon this is a patch to fixup the rest of the common PPC
    > code, as follows:

    And on top of all of that is the following, which allows KGDB to work on
    the Motorola LoPEC.

    --- 1.48/arch/ppc/Kconfig Wed Jan 21 10:13:13 2004
    +++ edited/arch/ppc/Kconfig Wed Jan 21 10:33:55 2004
    @@ -583,11 +583,6 @@
    depends on PPC_MULTIPLATFORM
    default y

    -config PPC_GEN550
    - bool
    - depends on SANDPOINT
    - default y
    -
    config PPC_PMAC
    bool
    depends on PPC_MULTIPLATFORM
    @@ -603,6 +598,11 @@
    depends on PPC_PMAC || PPC_CHRP
    default y

    +config PPC_GEN550
    + bool
    + depends on SANDPOINT || MCPN765 || LOPEC
    + default y
    +
    config FORCE
    bool
    depends on 6xx && (PCORE || POWERPMC250)
    --- 1.20/arch/ppc/platforms/lopec_setup.c Fri Sep 12 09:26:53 2003
    +++ edited/arch/ppc/platforms/lopec_setup.c Wed Jan 21 10:32:15 2004
    @@ -32,6 +32,7 @@
    #include <asm/mpc10x.h>
    #include <asm/hw_irq.h>
    #include <asm/prep_nvram.h>
    +#include <asm/kgdb.h>

    extern char saved_command_line[];
    extern void lopec_find_bridges(void);
    @@ -261,44 +262,6 @@
    : "=r" (batu), "=r" (batl));
    }

    -#ifdef CONFIG_SERIAL_TEXT_DEBUG
    -#include <linux/serial.h>
    -#include <linux/serialP.h>
    -#include <linux/serial_reg.h>
    -#include <asm/serial.h>
    -
    -static struct serial_state rs_table[RS_TABLE_SIZE] = {
    - SERIAL_PORT_DFNS /* Defined in <asm/serial.h> */
    -};
    -
    -volatile unsigned char *com_port;
    -volatile unsigned char *com_port_lsr;
    -
    -static void
    -serial_writechar(char c)
    -{
    - while ((*com_port_lsr & UART_LSR_THRE) == 0)
    - ;
    - *com_port = c;
    -}
    -
    -void
    -lopec_progress(char *s, unsigned short hex)
    -{
    - volatile char c;
    -
    - com_port = (volatile unsigned char *) rs_table[0].port;
    - com_port_lsr = com_port + UART_LSR;
    -
    - while ((c = *s++) != 0)
    - serial_writechar(c);
    -
    - /* Most messages don't have a newline in them */
    - serial_writechar('\n');
    - serial_writechar('\r');
    -}
    -#endif /* CONFIG_SERIAL_TEXT_DEBUG */
    -
    TODC_ALLOC();

    static void __init
    @@ -383,7 +346,10 @@
    ppc_ide_md.default_io_base = lopec_ide_default_io_base;
    ppc_ide_md.ide_init_hwif = lopec_ide_init_hwif_ports;
    #endif
    +#ifdef CONFIG_KGDB
    + ppc_md.kgdb_map_scc = gen550_kgdb_map_scc;
    +#endif
    #ifdef CONFIG_SERIAL_TEXT_DEBUG
    - ppc_md.progress = lopec_progress;
    + ppc_md.progress = gen550_progress;
    #endif
    }
    --
    Tom Rini
    http://gate.crashing.org/~trini/
    -
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