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-rw-r--r--board/freescale/common/ngpixis.c56
-rw-r--r--board/freescale/common/ngpixis.h8
-rw-r--r--board/freescale/p1022ds/diu.c66
3 files changed, 112 insertions, 18 deletions
diff --git a/board/freescale/common/ngpixis.c b/board/freescale/common/ngpixis.c
index a135fbe..4e01e5a 100644
--- a/board/freescale/common/ngpixis.c
+++ b/board/freescale/common/ngpixis.c
@@ -1,5 +1,5 @@
/**
- * Copyright 2010 Freescale Semiconductor
+ * Copyright 2010-2011 Freescale Semiconductor
* Author: Timur Tabi <timur@freescale.com>
*
* This program is free software; you can redistribute it and/or modify it
@@ -35,61 +35,89 @@
#include <common.h>
#include <command.h>
-#include <watchdog.h>
-#include <asm/cache.h>
#include <asm/io.h>
#include "ngpixis.h"
+static u8 __pixis_read(unsigned int reg)
+{
+ void *p = (void *)PIXIS_BASE;
+
+ return in_8(p + reg);
+}
+u8 pixis_read(unsigned int reg) __attribute__((weak, alias("__pixis_read")));
+
+static void __pixis_write(unsigned int reg, u8 value)
+{
+ void *p = (void *)PIXIS_BASE;
+
+ out_8(p + reg, value);
+}
+void pixis_write(unsigned int reg, u8 value)
+ __attribute__((weak, alias("__pixis_write")));
+
/*
* Reset the board. This ignores the ENx registers.
*/
-void pixis_reset(void)
+void __pixis_reset(void)
{
- out_8(&pixis->rst, 0);
+ PIXIS_WRITE(rst, 0);
while (1);
}
+void pixis_reset(void) __attribute__((weak, alias("__pixis_reset")));
/*
* Reset the board. Like pixis_reset(), but it honors the ENx registers.
*/
-void pixis_bank_reset(void)
+void __pixis_bank_reset(void)
{
- out_8(&pixis->vctl, 0);
- out_8(&pixis->vctl, 1);
+ PIXIS_WRITE(vctl, 0);
+ PIXIS_WRITE(vctl, 1);
while (1);
}
+void pixis_bank_reset(void) __attribute__((weak, alias("__pixis_bank_reset")));
/**
* Set the boot bank to the power-on default bank
*/
-void clear_altbank(void)
+void __clear_altbank(void)
{
+ u8 reg;
+
/* Tell the ngPIXIS to use this the bits in the physical switch for the
* boot bank value, instead of the SWx register. We need to be careful
* only to set the bits in SWx that correspond to the boot bank.
*/
- clrbits_8(&PIXIS_EN(PIXIS_LBMAP_SWITCH), PIXIS_LBMAP_MASK);
+ reg = PIXIS_READ(s[PIXIS_LBMAP_SWITCH - 1].en);
+ reg &= ~PIXIS_LBMAP_MASK;
+ PIXIS_WRITE(s[PIXIS_LBMAP_SWITCH - 1].en, reg);
}
+void clear_altbank(void) __attribute__((weak, alias("__clear_altbank")));
/**
* Set the boot bank to the alternate bank
*/
-void set_altbank(void)
+void __set_altbank(void)
{
+ u8 reg;
+
/* Program the alternate bank number into the SWx register.
*/
- clrsetbits_8(&PIXIS_SW(PIXIS_LBMAP_SWITCH), PIXIS_LBMAP_MASK,
- PIXIS_LBMAP_ALTBANK);
+ reg = PIXIS_READ(s[PIXIS_LBMAP_SWITCH - 1].sw);
+ reg = (reg & ~PIXIS_LBMAP_MASK) | PIXIS_LBMAP_ALTBANK;
+ PIXIS_WRITE(s[PIXIS_LBMAP_SWITCH - 1].sw, reg);
/* Tell the ngPIXIS to use this the bits in the SWx register for the
* boot bank value, instead of the physical switch. We need to be
* careful only to set the bits in SWx that correspond to the boot bank.
*/
- setbits_8(&PIXIS_EN(PIXIS_LBMAP_SWITCH), PIXIS_LBMAP_MASK);
+ reg = PIXIS_READ(s[PIXIS_LBMAP_SWITCH - 1].en);
+ reg |= PIXIS_LBMAP_MASK;
+ PIXIS_WRITE(s[PIXIS_LBMAP_SWITCH - 1].en, reg);
}
+void set_altbank(void) __attribute__((weak, alias("__set_altbank")));
int pixis_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
diff --git a/board/freescale/common/ngpixis.h b/board/freescale/common/ngpixis.h
index 089408b..681b0d0 100644
--- a/board/freescale/common/ngpixis.h
+++ b/board/freescale/common/ngpixis.h
@@ -1,5 +1,5 @@
/**
- * Copyright 2010 Freescale Semiconductor
+ * Copyright 2010-2011 Freescale Semiconductor
* Author: Timur Tabi <timur@freescale.com>
*
* This program is free software; you can redistribute it and/or modify it
@@ -55,3 +55,9 @@ typedef struct ngpixis {
/* The PIXIS EN register that corresponds to board switch X, where x >= 1 */
#define PIXIS_EN(x) (pixis->s[(x) - 1].en)
+
+u8 pixis_read(unsigned int reg);
+void pixis_write(unsigned int reg, u8 value);
+
+#define PIXIS_READ(reg) pixis_read(offsetof(ngpixis_t, reg))
+#define PIXIS_WRITE(reg, value) pixis_write(offsetof(ngpixis_t, reg), value)
diff --git a/board/freescale/p1022ds/diu.c b/board/freescale/p1022ds/diu.c
index 8f5305c..b37e0e2 100644
--- a/board/freescale/p1022ds/diu.c
+++ b/board/freescale/p1022ds/diu.c
@@ -1,5 +1,5 @@
/*
- * Copyright 2010 Freescale Semiconductor, Inc.
+ * Copyright 2010-2011 Freescale Semiconductor, Inc.
* Authors: Timur Tabi <timur@freescale.com>
*
* FSL DIU Framebuffer driver
@@ -139,8 +139,6 @@ int platform_diu_init(unsigned int *xres, unsigned int *yres)
return fsl_diu_init(*xres, pixel_format, 0);
}
-#ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
-
/*
* set_mux_to_lbc - disable the DIU so that we can read/write to elbc
*
@@ -211,6 +209,68 @@ static void set_mux_to_diu(void)
in_be32(&gur->pmuxcr);
}
+/*
+ * pixis_read - board-specific function to read from the PIXIS
+ *
+ * This function overrides the generic pixis_read() function, so that it can
+ * use PIXIS indirect mode if necessary.
+ */
+u8 pixis_read(unsigned int reg)
+{
+ ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
+
+ /* Use indirect mode if the mux is currently set to DIU mode */
+ if ((in_be32(&gur->pmuxcr) & PMUXCR_ELBCDIU_MASK) !=
+ PMUXCR_ELBCDIU_NOR16) {
+ out_8(lbc_lcs0_ba, reg);
+ return in_8(lbc_lcs1_ba);
+ } else {
+ void *p = (void *)PIXIS_BASE;
+
+ return in_8(p + reg);
+ }
+}
+
+/*
+ * pixis_write - board-specific function to write to the PIXIS
+ *
+ * This function overrides the generic pixis_write() function, so that it can
+ * use PIXIS indirect mode if necessary.
+ */
+void pixis_write(unsigned int reg, u8 value)
+{
+ ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
+
+ /* Use indirect mode if the mux is currently set to DIU mode */
+ if ((in_be32(&gur->pmuxcr) & PMUXCR_ELBCDIU_MASK) !=
+ PMUXCR_ELBCDIU_NOR16) {
+ out_8(lbc_lcs0_ba, reg);
+ out_8(lbc_lcs1_ba, value);
+ /* Do a read-back to ensure the write completed */
+ in_8(lbc_lcs1_ba);
+ } else {
+ void *p = (void *)PIXIS_BASE;
+
+ out_8(p + reg, value);
+ }
+}
+
+void pixis_bank_reset(void)
+{
+ /*
+ * For some reason, a PIXIS bank reset does not work if the PIXIS is
+ * in indirect mode, so switch to direct mode first.
+ */
+ set_mux_to_lbc();
+
+ out_8(&pixis->vctl, 0);
+ out_8(&pixis->vctl, 1);
+
+ while (1);
+}
+
+#ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
+
void flash_write8(u8 value, void *addr)
{
int sw = set_mux_to_lbc();
generated by cgit v1.1 at 2024-11-26 10:34:08 +0000