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-rw-r--r--board/freescale/common/Makefile1
-rw-r--r--board/freescale/common/ngpixis.c136
-rw-r--r--board/freescale/common/ngpixis.h57
-rw-r--r--board/freescale/p2020ds/p2020ds.c55
4 files changed, 214 insertions, 35 deletions
diff --git a/board/freescale/common/Makefile b/board/freescale/common/Makefile
index 02a824d..620eb16 100644
--- a/board/freescale/common/Makefile
+++ b/board/freescale/common/Makefile
@@ -33,6 +33,7 @@ COBJS-${CONFIG_FSL_CADMUS} += cadmus.o
COBJS-${CONFIG_FSL_VIA} += cds_via.o
COBJS-${CONFIG_FSL_DIU_FB} += fsl_diu_fb.o fsl_logo_bmp.o
COBJS-${CONFIG_FSL_PIXIS} += pixis.o
+COBJS-${CONFIG_FSL_NGPIXIS} += ngpixis.o
COBJS-${CONFIG_PQ_MDS_PIB} += pq-mds-pib.o
COBJS-${CONFIG_ID_EEPROM} += sys_eeprom.o
COBJS-${CONFIG_FSL_SGMII_RISER} += sgmii_riser.o
diff --git a/board/freescale/common/ngpixis.c b/board/freescale/common/ngpixis.c
new file mode 100644
index 0000000..bb6794e
--- /dev/null
+++ b/board/freescale/common/ngpixis.c
@@ -0,0 +1,136 @@
+/**
+ * Copyright 2010 Freescale Semiconductor
+ * Author: Timur Tabi <timur@freescale.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This file provides support for the ngPIXIS, a board-specific FPGA used on
+ * some Freescale reference boards.
+ *
+ * A "switch" is black rectangular block on the motherboard. It contains
+ * eight "bits". The ngPIXIS has a set of memory-mapped registers (SWx) that
+ * shadow the actual physical switches. There is also another set of
+ * registers (ENx) that tell the ngPIXIS which bits of SWx should actually be
+ * used to override the values of the bits in the physical switches.
+ *
+ * The following macros need to be defined:
+ *
+ * PIXIS_BASE - The virtual address of the base of the PIXIS register map
+ *
+ * PIXIS_LBMAP_SWITCH - The switch number (i.e. the "x" in "SWx"). This value
+ * is used in the PIXIS_SW() macro to determine which offset in
+ * the PIXIS register map corresponds to the physical switch that controls
+ * the boot bank.
+ *
+ * PIXIS_LBMAP_MASK - A bit mask the defines which bits in SWx to use.
+ *
+ * PIXIS_LBMAP_SHIFT - The shift value that corresponds to PIXIS_LBMAP_MASK.
+ *
+ * PIXIS_LBMAP_ALTBANK - The value to program into SWx to tell the ngPIXIS to
+ * boot from the alternate bank.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <watchdog.h>
+#include <asm/cache.h>
+#include <asm/io.h>
+
+#include "ngpixis.h"
+
+/*
+ * Reset the board. This ignores the ENx registers.
+ */
+void pixis_reset(void)
+{
+ out_8(&pixis->rst, 0);
+
+ while (1);
+}
+
+/*
+ * Reset the board. Like pixis_reset(), but it honors the ENx registers.
+ */
+void pixis_bank_reset(void)
+{
+ out_8(&pixis->vctl, 0);
+ out_8(&pixis->vctl, 1);
+
+ while (1);
+}
+
+/**
+ * Set the boot bank to the power-on default bank
+ */
+void clear_altbank(void)
+{
+ /* 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);
+}
+
+/**
+ * Set the boot bank to the alternate bank
+ */
+void set_altbank(void)
+{
+ /* Program the alternate bank number into the SWx register.
+ */
+ clrsetbits_8(&PIXIS_SW(PIXIS_LBMAP_SWITCH), PIXIS_LBMAP_MASK,
+ PIXIS_LBMAP_ALTBANK);
+
+ /* 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);
+}
+
+
+int pixis_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ unsigned int i;
+ char *p_altbank = NULL;
+ char *unknown_param = NULL;
+
+ /* No args is a simple reset request.
+ */
+ if (argc <= 1)
+ pixis_reset();
+
+ for (i = 1; i < argc; i++) {
+ if (strcmp(argv[i], "altbank") == 0) {
+ p_altbank = argv[i];
+ continue;
+ }
+
+ unknown_param = argv[i];
+ }
+
+ if (unknown_param) {
+ printf("Invalid option: %s\n", unknown_param);
+ return 1;
+ }
+
+ if (p_altbank)
+ set_altbank();
+ else
+ clear_altbank();
+
+ pixis_bank_reset();
+
+ /* Shouldn't be reached. */
+ return 0;
+}
+
+U_BOOT_CMD(
+ pixis_reset, CONFIG_SYS_MAXARGS, 1, pixis_reset_cmd,
+ "Reset the board using the FPGA sequencer",
+ "- hard reset to default bank\n"
+ "pixis_reset altbank - reset to alternate bank\n"
+ );
diff --git a/board/freescale/common/ngpixis.h b/board/freescale/common/ngpixis.h
new file mode 100644
index 0000000..284d044
--- /dev/null
+++ b/board/freescale/common/ngpixis.h
@@ -0,0 +1,57 @@
+/**
+ * Copyright 2010 Freescale Semiconductor
+ * Author: Timur Tabi <timur@freescale.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This file provides support for the ngPIXIS, a board-specific FPGA used on
+ * some Freescale reference boards.
+ */
+
+/* ngPIXIS register set. Hopefully, this won't change too much over time.
+ * Feel free to add board-specific #ifdefs where necessary.
+ */
+typedef struct ngpixis {
+ u8 id;
+ u8 arch;
+ u8 scver;
+ u8 csr;
+ u8 rst;
+ u8 res1;
+ u8 aux;
+ u8 spd;
+ u8 brdcfg0;
+ u8 dma;
+ u8 addr;
+ u8 res2[2];
+ u8 data;
+ u8 led;
+ u8 res3;
+ u8 vctl;
+ u8 vstat;
+ u8 vcfgen0;
+ u8 res4;
+ u8 ocmcsr;
+ u8 ocmmsg;
+ u8 gmdbg;
+ u8 res5[2];
+ u8 sclk[3];
+ u8 dclk[3];
+ u8 watch;
+ struct {
+ u8 sw;
+ u8 en;
+ } s[8];
+} ngpixis_t __attribute__ ((aligned(1)));
+
+/* Pointer to the PIXIS register set */
+#define pixis ((ngpixis_t *)PIXIS_BASE)
+
+/* The PIXIS SW register that corresponds to board switch X, where x >= 1 */
+#define PIXIS_SW(x) (pixis->s[(x) - 1].sw)
+
+/* The PIXIS EN register that corresponds to board switch X, where x >= 1 */
+#define PIXIS_EN(x) (pixis->s[(x) - 1].en)
diff --git a/board/freescale/p2020ds/p2020ds.c b/board/freescale/p2020ds/p2020ds.c
index 664135c..f0ff209 100644
--- a/board/freescale/p2020ds/p2020ds.c
+++ b/board/freescale/p2020ds/p2020ds.c
@@ -38,6 +38,7 @@
#include <asm/mp.h>
#include <netdev.h>
+#include "../common/ngpixis.h"
#include "../common/sgmii_riser.h"
DECLARE_GLOBAL_DATA_PTR;
@@ -46,30 +47,24 @@ phys_size_t fixed_sdram(void);
int checkboard(void)
{
- u8 sw7;
- u8 *pixis_base = (u8 *)PIXIS_BASE;
+ u8 sw;
puts("Board: P2020DS ");
#ifdef CONFIG_PHYS_64BIT
puts("(36-bit addrmap) ");
#endif
- printf("Sys ID: 0x%02x, "
- "Sys Ver: 0x%02x, FPGA Ver: 0x%02x, ",
- in_8(pixis_base + PIXIS_ID), in_8(pixis_base + PIXIS_VER),
- in_8(pixis_base + PIXIS_PVER));
+ printf("Sys ID: 0x%02x, Sys Ver: 0x%02x, FPGA Ver: 0x%02x, ",
+ in_8(&pixis->id), in_8(&pixis->arch), in_8(&pixis->scver));
- sw7 = in_8(pixis_base + PIXIS_SW(7));
- switch ((sw7 & PIXIS_SW7_LBMAP) >> 6) {
- case 0:
- case 1:
- printf ("vBank: %d\n", ((sw7 & PIXIS_SW7_VBANK) >> 4));
- break;
- case 2:
- case 3:
- puts ("Promjet\n");
- break;
- }
+ sw = in_8(&PIXIS_SW(PIXIS_LBMAP_SWITCH));
+ sw = (sw & PIXIS_LBMAP_MASK) >> PIXIS_LBMAP_SHIFT;
+
+ if (sw < 0x8)
+ /* The lower two bits are the actual vbank number */
+ printf("vBank: %d\n", sw & 3);
+ else
+ puts("Promjet\n");
return 0;
}
@@ -370,30 +365,22 @@ unsigned long get_board_ddr_clk(ulong dummy)
return gd->mem_clk;
}
-unsigned long
-calculate_board_sys_clk(ulong dummy)
+unsigned long calculate_board_sys_clk(ulong dummy)
{
ulong val;
- u8 *pixis_base = (u8 *)PIXIS_BASE;
- val = ics307_clk_freq(
- in_8(pixis_base + PIXIS_VSYSCLK0),
- in_8(pixis_base + PIXIS_VSYSCLK1),
- in_8(pixis_base + PIXIS_VSYSCLK2));
+ val = ics307_clk_freq(in_8(&pixis->sclk[0]), in_8(&pixis->sclk[1]),
+ in_8(&pixis->sclk[2]));
debug("sysclk val = %lu\n", val);
return val;
}
-unsigned long
-calculate_board_ddr_clk(ulong dummy)
+unsigned long calculate_board_ddr_clk(ulong dummy)
{
ulong val;
- u8 *pixis_base = (u8 *)PIXIS_BASE;
- val = ics307_clk_freq(
- in_8(pixis_base + PIXIS_VDDRCLK0),
- in_8(pixis_base + PIXIS_VDDRCLK1),
- in_8(pixis_base + PIXIS_VDDRCLK2));
+ val = ics307_clk_freq(in_8(&pixis->dclk[0]), in_8(&pixis->dclk[1]),
+ in_8(&pixis->dclk[2]));
debug("ddrclk val = %lu\n", val);
return val;
}
@@ -402,9 +389,8 @@ unsigned long get_board_sys_clk(ulong dummy)
{
u8 i;
ulong val = 0;
- u8 *pixis_base = (u8 *)PIXIS_BASE;
- i = in_8(pixis_base + PIXIS_SPD);
+ i = in_8(&pixis->spd);
i &= 0x07;
switch (i) {
@@ -441,9 +427,8 @@ unsigned long get_board_ddr_clk(ulong dummy)
{
u8 i;
ulong val = 0;
- u8 *pixis_base = (u8 *)PIXIS_BASE;
- i = in_8(pixis_base + PIXIS_SPD);
+ i = in_8(&pixis->spd);
i &= 0x38;
i >>= 3;
generated by cgit v1.1 at 2024-12-15 21:31:33 +0000