[PATCH 35/47] Update CRISv32 boot/compressed/misc.c

Jesper Nilsson
2007-12-06T12:54:38Z

- Shorten include paths to machine specific headers.
- Remove fill_inbuf, not defined here.
- Return __dest as value from memcpy.
- Enable serial port hardware transmitter and receiver in serial_setup.
- Correct baudrate divisor calculation, changed from 4800 to 115200.
- Add support for Artpec-3 specific serial port setup.
- Initialize pinmux for the correct serial port.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
---
arch/cris/arch-v32/boot/compressed/misc.c | 72 +++++++++++++++++++++--------
1 files changed, 53 insertions(+), 19 deletions(-)

diff --git a/arch/cris/arch-v32/boot/compressed/misc.c b/arch/cris/arch-v32/boot/compressed/misc.c
index 0169ba1..55b2695 100644
--- a/arch/cris/arch-v32/boot/compressed/misc.c
+++ b/arch/cris/arch-v32/boot/compressed/misc.c
@@ -1,8 +1,6 @@
/*
* misc.c
*
- * $Id: misc.c,v 1.8 2005/04/24 18:34:29 starvik Exp $
- *
* This is a collection of several routines from gzip-1.0.3
* adapted for Linux.
*
@@ -22,9 +20,13 @@

#include <linux/types.h>
-#include <asm/arch/hwregs/reg_rdwr.h>
-#include <asm/arch/hwregs/reg_map.h>
-#include <asm/arch/hwregs/ser_defs.h>
+#include <hwregs/reg_rdwr.h>
+#include <hwregs/reg_map.h>
+#include <hwregs/ser_defs.h>
+#include <hwregs/pinmux_defs.h>
+#ifdef CONFIG_CRIS_MACH_ARTPEC3
+#include <hwregs/clkgen_defs.h>
+#endif

/*
* gzip declarations
@@ -85,7 +87,6 @@ static unsigned outcnt = 0; /* bytes in output buffer */
# define Tracecv(c,x)
#endif

-static int fill_inbuf(void);
static void flush_window(void);
static void error(char *m);
static void gzip_mark(void **);
@@ -186,6 +187,8 @@ memset(void* s, int c, size_t n)
char *ss = (char*)s;

for (i=0;i<n;i++) ss[i] = c;
+
+ return s;
}

void*
@@ -196,6 +199,8 @@ memcpy(void* __dest, __const void* __src,
char *d = (char *)__dest, *s = (char *)__src;

for (i=0;i<__n;i++) d[i] = s[i];
+
+ return __dest;
}

/* ===========================================================================
@@ -225,15 +230,15 @@ flush_window()
static void
error(char *x)
{
- puts("\n\n");
+ puts("\r\n\n");
puts(x);
- puts("\n\n -- System halted\n");
+ puts("\r\n\n -- System halted\n");

while(1); /* Halt */
}

void
-setup_normal_output_buffer()
+setup_normal_output_buffer(void)
{
output_data = (char *)KERNEL_LOAD_ADR;
}
@@ -262,15 +267,17 @@ serial_setup(reg_scope_instances regi_ser)
rec_baud = REG_RD(ser, regi_ser, rw_rec_baud_div);

tr_ctrl.stop_bits = 1; /* 2 stop bits. */
+ tr_ctrl.en = 1; /* enable transmitter */
+ rec_ctrl.en = 1; /* enabler receiver */

/*
- * The baudrate setup is a bit fishy, but in the end the transceiver is
- * set to 4800 and the receiver to 115200. The magic value is
- * 29.493 MHz.
+ * The baudrate setup used to be a bit fishy, but now transmitter and
+ * receiver are both set to the intended baud rate, 115200.
+ * The magic value is 29.493 MHz.
*/
tr_ctrl.base_freq = regk_ser_f29_493;
rec_ctrl.base_freq = regk_ser_f29_493;
- tr_baud.div = (29493000 / 8) / 4800;
+ tr_baud.div = (29493000 / 8) / 115200;
rec_baud.div = (29493000 / 8) / 115200;

REG_WR(ser, regi_ser, rw_tr_ctrl, tr_ctrl);
@@ -280,25 +287,52 @@ serial_setup(reg_scope_instances regi_ser)
}

void
-decompress_kernel()
+decompress_kernel(void)
{
char revision;

- /* input_data is set in head.S */
- inbuf = input_data;
+#if defined(CONFIG_ETRAX_DEBUG_PORT1) || \
+ defined(CONFIG_ETRAX_DEBUG_PORT2) || \
+ defined(CONFIG_ETRAX_DEBUG_PORT3)
+ reg_pinmux_rw_hwprot hwprot;
+
+#ifdef CONFIG_CRIS_MACH_ARTPEC3
+ reg_clkgen_rw_clk_ctrl clk_ctrl;
+
+ /* Enable corresponding clock region when serial 1..3 selected */
+
+ clk_ctrl = REG_RD(clkgen, regi_clkgen, rw_clk_ctrl);
+ clk_ctrl.sser_ser_dma6_7 = regk_clkgen_yes;
+ REG_WR(clkgen, regi_clkgen, rw_clk_ctrl, clk_ctrl);
+#endif
+
+ /* pinmux setup for ports 1..3 */
+ hwprot = REG_RD(pinmux, regi_pinmux, rw_hwprot);
+#endif

#ifdef CONFIG_ETRAX_DEBUG_PORT0
serial_setup(regi_ser0);
#endif
#ifdef CONFIG_ETRAX_DEBUG_PORT1
+ hwprot.ser1 = regk_pinmux_yes;
serial_setup(regi_ser1);
#endif
#ifdef CONFIG_ETRAX_DEBUG_PORT2
+ hwprot.ser2 = regk_pinmux_yes;
serial_setup(regi_ser2);
#endif
#ifdef CONFIG_ETRAX_DEBUG_PORT3
+ hwprot.ser3 = regk_pinmux_yes;
serial_setup(regi_ser3);
#endif
+#if defined(CONFIG_ETRAX_DEBUG_PORT1) || \
+ defined(CONFIG_ETRAX_DEBUG_PORT2) || \
+ defined(CONFIG_ETRAX_DEBUG_PORT3)
+ REG_WR(pinmux, regi_pinmux, rw_hwprot, hwprot);
+#endif
+
+ /* input_data is set in head.S */
+ inbuf = input_data;

setup_normal_output_buffer();

@@ -307,11 +341,11 @@ decompress_kernel()
__asm__ volatile ("move $vr,%0" : "=rm" (revision));
if (revision < 32)
{
- puts("You need an ETRAX FS to run Linux 2.6/crisv32.\n");
+ puts("You need an ETRAX FS to run Linux 2.6/crisv32.\r\n");
while(1);
}

- puts("Uncompressing Linux...\n");
+ puts("Uncompressing Linux...\r\n");
gunzip();
- puts("Done. Now booting the kernel.\n");
+ puts("Done. Now booting the kernel.\r\n");
}
--
1.5.3.6.970.gd25430