aboutsummaryrefslogtreecommitdiff
path: root/board/davedenx
diff options
context:
space:
mode:
authorHelmut Raiger <helmut.raiger@hale.at>2011-09-29 05:45:03 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2011-10-27 21:56:30 +0200
commit47c5455a489c8e558ecb002a3a97a030ce490f9e (patch)
treea0ecca9a95071e6a963ed4d4abedfa5bf8e7745b /board/davedenx
parent43883dc3e50e224ea68031bf34b766544311bf60 (diff)
downloadu-boot-linaro-stable-47c5455a489c8e558ecb002a3a97a030ce490f9e.tar.gz
mx31: provide readable WEIM CS accessor
setup_weimcs() and some macros are added to support the setup for i.MX31 WEIM chip selects. As a compromise between verbosity and readability an ASCII-art'ish bit comment is used instead of bitfields. All i.MX31 boards have been patched to use this approach using a helper program to verify the changes. Signed-off-by: Helmut Raiger <helmut.raiger@hale.at> Acked-by: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'board/davedenx')
-rw-r--r--board/davedenx/qong/qong.c86
1 files changed, 33 insertions, 53 deletions
diff --git a/board/davedenx/qong/qong.c b/board/davedenx/qong/qong.c
index 99432edab..9fca1f8dd 100644
--- a/board/davedenx/qong/qong.c
+++ b/board/davedenx/qong/qong.c
@@ -25,6 +25,7 @@
#include <netdev.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
+#include <asm/arch/sys_proto.h>
#include <asm/io.h>
#include <nand.h>
#include <fsl_pmic.h>
@@ -61,11 +62,17 @@ static void qong_fpga_reset(void)
int board_early_init_f (void)
{
#ifdef CONFIG_QONG_FPGA
- /* CS1: FPGA/Network Controller/GPIO */
- /* 16-bit, no DTACK */
- __REG(CSCR_U(1)) = 0x00000A01;
- __REG(CSCR_L(1)) = 0x20040501;
- __REG(CSCR_A(1)) = 0x04020C00;
+ /* CS1: FPGA/Network Controller/GPIO, 16-bit, no DTACK */
+ static const struct mxc_weimcs cs1 = {
+ /* sp wp bcd bcs psz pme sync dol cnc wsc ew wws edc */
+ CSCR_U(0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 1),
+ /* oea oen ebwa ebwn csa ebc dsz csn psr cre wrap csen */
+ CSCR_L(2, 0, 0, 4, 0, 0, 5, 0, 0, 0, 0, 1),
+ /* ebra ebrn rwa rwn mum lah lbn lba dww dct wwu age cnc2 fce*/
+ CSCR_A(0, 4, 0, 2, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0)
+ };
+
+ mxc_setup_weimcs(1, &cs1);
/* setup pins for FPGA */
mx31_gpio_mux(IOMUX_MODE(0x76, MUX_CTL_GPIO));
@@ -146,50 +153,16 @@ int board_init (void)
/* Chip selects */
/* CS0: Nor Flash #0 - it must be init'ed when executing from DDR */
/* Assumptions: HCLK = 133 MHz, tACC = 130ns */
- __REG(CSCR_U(0)) = ((0 << 31) | /* SP */
- (0 << 30) | /* WP */
- (0 << 28) | /* BCD */
- (0 << 24) | /* BCS */
- (0 << 22) | /* PSZ */
- (0 << 21) | /* PME */
- (0 << 20) | /* SYNC */
- (0 << 16) | /* DOL */
- (3 << 14) | /* CNC */
- (21 << 8) | /* WSC */
- (0 << 7) | /* EW */
- (0 << 4) | /* WWS */
- (6 << 0) /* EDC */
- );
-
- __REG(CSCR_L(0)) = ((2 << 28) | /* OEA */
- (1 << 24) | /* OEN */
- (3 << 20) | /* EBWA */
- (3 << 16) | /* EBWN */
- (1 << 12) | /* CSA */
- (1 << 11) | /* EBC */
- (5 << 8) | /* DSZ */
- (1 << 4) | /* CSN */
- (0 << 3) | /* PSR */
- (0 << 2) | /* CRE */
- (0 << 1) | /* WRAP */
- (1 << 0) /* CSEN */
- );
-
- __REG(CSCR_A(0)) = ((2 << 28) | /* EBRA */
- (1 << 24) | /* EBRN */
- (2 << 20) | /* RWA */
- (2 << 16) | /* RWN */
- (0 << 15) | /* MUM */
- (0 << 13) | /* LAH */
- (2 << 10) | /* LBN */
- (0 << 8) | /* LBA */
- (0 << 6) | /* DWW */
- (0 << 4) | /* DCT */
- (0 << 3) | /* WWU */
- (0 << 2) | /* AGE */
- (0 << 1) | /* CNC2 */
- (0 << 0) /* FCE */
- );
+ static const struct mxc_weimcs cs0 = {
+ /* sp wp bcd bcs psz pme sync dol cnc wsc ew wws edc */
+ CSCR_U(0, 0, 0, 0, 0, 0, 0, 0, 3, 21, 0, 0, 6),
+ /* oea oen ebwa ebwn csa ebc dsz csn psr cre wrap csen */
+ CSCR_L(0, 1, 3, 3, 1, 1, 5, 1, 0, 0, 0, 1),
+ /* ebra ebrn rwa rwn mum lah lbn lba dww dct wwu age cnc2 fce*/
+ CSCR_A(0, 1, 2, 2, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0)
+ };
+
+ mxc_setup_weimcs(0, &cs0);
/* board id for linux */
gd->bd->bi_arch_number = MACH_TYPE_QONG;
@@ -247,11 +220,18 @@ int board_eth_init(bd_t *bis)
#if defined(CONFIG_QONG_FPGA) && defined(CONFIG_NAND_PLAT)
static void board_nand_setup(void)
{
-
/* CS3: NAND 8-bit */
- __REG(CSCR_U(3)) = 0x00004f00;
- __REG(CSCR_L(3)) = 0x20013b31;
- __REG(CSCR_A(3)) = 0x00020800;
+ static const struct mxc_weimcs cs3 = {
+ /* sp wp bcd bcs psz pme sync dol cnc wsc ew wws edc */
+ CSCR_U(0, 0, 0, 0, 0, 0, 0, 0, 1, 15, 0, 0, 0),
+ /* oea oen ebwa ebwn csa ebc dsz csn psr cre wrap csen */
+ CSCR_L(2, 0, 0, 1, 3, 1, 3, 3, 0, 0, 0, 1),
+ /* ebra ebrn rwa rwn mum lah lbn lba dww dct wwu age cnc2 fce*/
+ CSCR_A(0, 0, 0, 2, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0)
+ };
+
+ mxc_setup_weimcs(3, &cs3);
+
__REG(IOMUXC_GPR) |= 1 << 13;
mx31_gpio_mux(IOMUX_MODE(MUX_CTL_NFC_WP, MUX_CTL_IN_GPIO));