Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/ppc/syslib/gen550_dbg.c b/arch/ppc/syslib/gen550_dbg.c
new file mode 100644
index 0000000..9ef0113
--- /dev/null
+++ b/arch/ppc/syslib/gen550_dbg.c
@@ -0,0 +1,182 @@
+/*
+ * arch/ppc/syslib/gen550_dbg.c
+ *
+ * A library of polled 16550 serial routines. These are intended to
+ * be used to support progress messages, xmon, kgdb, etc. on a
+ * variety of platforms.
+ *
+ * Adapted from lots of code ripped from the arch/ppc/boot/ polled
+ * 16550 support.
+ *
+ * Author: Matt Porter <mporter@mvista.com>
+ *
+ * 2002-2003 (c) MontaVista Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/serial.h>
+#include <linux/tty.h> /* For linux/serial_core.h */
+#include <linux/serial_core.h>
+#include <linux/serialP.h>
+#include <linux/serial_reg.h>
+#include <asm/machdep.h>
+#include <asm/serial.h>
+#include <asm/io.h>
+
+#define SERIAL_BAUD 9600
+
+/* SERIAL_PORT_DFNS is defined in <asm/serial.h> */
+#ifndef SERIAL_PORT_DFNS
+#define SERIAL_PORT_DFNS
+#endif
+
+static struct serial_state rs_table[RS_TABLE_SIZE] = {
+ SERIAL_PORT_DFNS /* defined in <asm/serial.h> */
+};
+
+static void (*serial_outb)(unsigned long, unsigned char);
+static unsigned long (*serial_inb)(unsigned long);
+
+static int shift;
+
+unsigned long direct_inb(unsigned long addr)
+{
+ return readb((void __iomem *)addr);
+}
+
+void direct_outb(unsigned long addr, unsigned char val)
+{
+ writeb(val, (void __iomem *)addr);
+}
+
+unsigned long io_inb(unsigned long port)
+{
+ return inb(port);
+}
+
+void io_outb(unsigned long port, unsigned char val)
+{
+ outb(val, port);
+}
+
+unsigned long serial_init(int chan, void *ignored)
+{
+ unsigned long com_port;
+ unsigned char lcr, dlm;
+
+ /* We need to find out which type io we're expecting. If it's
+ * 'SERIAL_IO_PORT', we get an offset from the isa_io_base.
+ * If it's 'SERIAL_IO_MEM', we can the exact location. -- Tom */
+ switch (rs_table[chan].io_type) {
+ case SERIAL_IO_PORT:
+ com_port = rs_table[chan].port;
+ serial_outb = io_outb;
+ serial_inb = io_inb;
+ break;
+ case SERIAL_IO_MEM:
+ com_port = (unsigned long)rs_table[chan].iomem_base;
+ serial_outb = direct_outb;
+ serial_inb = direct_inb;
+ break;
+ default:
+ /* We can't deal with it. */
+ return -1;
+ }
+
+ /* How far apart the registers are. */
+ shift = rs_table[chan].iomem_reg_shift;
+
+ /* save the LCR */
+ lcr = serial_inb(com_port + (UART_LCR << shift));
+
+ /* Access baud rate */
+ serial_outb(com_port + (UART_LCR << shift), UART_LCR_DLAB);
+ dlm = serial_inb(com_port + (UART_DLM << shift));
+
+ /*
+ * Test if serial port is unconfigured
+ * We assume that no-one uses less than 110 baud or
+ * less than 7 bits per character these days.
+ * -- paulus.
+ */
+ if ((dlm <= 4) && (lcr & 2)) {
+ /* port is configured, put the old LCR back */
+ serial_outb(com_port + (UART_LCR << shift), lcr);
+ }
+ else {
+ /* Input clock. */
+ serial_outb(com_port + (UART_DLL << shift),
+ (rs_table[chan].baud_base / SERIAL_BAUD) & 0xFF);
+ serial_outb(com_port + (UART_DLM << shift),
+ (rs_table[chan].baud_base / SERIAL_BAUD) >> 8);
+ /* 8 data, 1 stop, no parity */
+ serial_outb(com_port + (UART_LCR << shift), 0x03);
+ /* RTS/DTR */
+ serial_outb(com_port + (UART_MCR << shift), 0x03);
+
+ /* Clear & enable FIFOs */
+ serial_outb(com_port + (UART_FCR << shift), 0x07);
+ }
+
+ return (com_port);
+}
+
+void
+serial_putc(unsigned long com_port, unsigned char c)
+{
+ while ((serial_inb(com_port + (UART_LSR << shift)) & UART_LSR_THRE) == 0)
+ ;
+ serial_outb(com_port, c);
+}
+
+unsigned char
+serial_getc(unsigned long com_port)
+{
+ while ((serial_inb(com_port + (UART_LSR << shift)) & UART_LSR_DR) == 0)
+ ;
+ return serial_inb(com_port);
+}
+
+int
+serial_tstc(unsigned long com_port)
+{
+ return ((serial_inb(com_port + (UART_LSR << shift)) & UART_LSR_DR) != 0);
+}
+
+void
+serial_close(unsigned long com_port)
+{
+}
+
+void
+gen550_init(int i, struct uart_port *serial_req)
+{
+ rs_table[i].io_type = serial_req->iotype;
+ rs_table[i].port = serial_req->iobase;
+ rs_table[i].iomem_base = serial_req->membase;
+ rs_table[i].iomem_reg_shift = serial_req->regshift;
+ rs_table[i].baud_base = serial_req->uartclk ? serial_req->uartclk / 16 : BASE_BAUD;
+}
+
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
+void
+gen550_progress(char *s, unsigned short hex)
+{
+ volatile unsigned int progress_debugport;
+ volatile char c;
+
+ progress_debugport = serial_init(0, NULL);
+
+ serial_putc(progress_debugport, '\r');
+
+ while ((c = *s++) != 0)
+ serial_putc(progress_debugport, c);
+
+ serial_putc(progress_debugport, '\n');
+ serial_putc(progress_debugport, '\r');
+}
+#endif /* CONFIG_SERIAL_TEXT_DEBUG */