[U-Boot] [Patch v2 12/16] armv8/ls1043ardb: Add cpld command to boot from nand

[Gong Qianyu]

Signed-off-by: Gong Qianyu <qianyu.g...@freescale.com>
---
 board/freescale/ls1043ardb/cpld.c | 18 ++++++++++++++++++
 board/freescale/ls1043ardb/cpld.h |  1 +
 2 files changed, 19 insertions(+)

diff --git a/board/freescale/ls1043ardb/cpld.c 
b/board/freescale/ls1043ardb/cpld.c
index 3f1101e..5acb97d 100644
--- a/board/freescale/ls1043ardb/cpld.c
+++ b/board/freescale/ls1043ardb/cpld.c
@@ -45,6 +45,21 @@ void cpld_set_defbank(void)
        CPLD_WRITE(global_rst, 1);
 }
 
+void cpld_set_nand(void)
+{
+       u16 reg = CPLD_CFG_RCW_SRC_NAND;
+       u8 reg5 = (u8)(reg >> 1);
+       u8 reg6 = (u8)(reg & 1);
+       cpld_rev_bit(&reg5);
+
+       CPLD_WRITE(soft_mux_on, 1);
+
+       CPLD_WRITE(cfg_rcw_src1, reg5);
+       CPLD_WRITE(cfg_rcw_src2, reg6);
+
+       CPLD_WRITE(system_rst, 1);
+}
+
 #ifdef DEBUG
 static void cpld_dump_regs(void)
 {
@@ -91,6 +106,8 @@ int do_cpld(cmd_tbl_t *cmdtp, int flag, int argc, char * 
const argv[])
        if (strcmp(argv[1], "reset") == 0) {
                if (strcmp(argv[2], "altbank") == 0)
                        cpld_set_altbank();
+               else if (strcmp(argv[2], "nand") == 0)
+                       cpld_set_nand();
                else
                        cpld_set_defbank();
 #ifdef DEBUG
@@ -109,6 +126,7 @@ U_BOOT_CMD(
        "Reset the board or alternate bank",
        "reset: reset to default bank\n"
        "cpld reset altbank: reset to alternate bank\n"
+       "cpld reset nand: reset to boot from NAND flash\n"
 #ifdef DEBUG
        "cpld dump - display the CPLD registers\n"
 #endif
diff --git a/board/freescale/ls1043ardb/cpld.h 
b/board/freescale/ls1043ardb/cpld.h
index ea4efd8..5f43a8a 100644
--- a/board/freescale/ls1043ardb/cpld.h
+++ b/board/freescale/ls1043ardb/cpld.h
@@ -40,4 +40,5 @@ void cpld_rev_bit(unsigned char *value);
 #define CPLD_SW_MUX_BANK_SEL   0x40
 #define CPLD_BANK_SEL_MASK     0x07
 #define CPLD_BANK_SEL_ALTBANK  0x04
+#define CPLD_CFG_RCW_SRC_NAND  0x106
 #endif
-- 
2.1.0.27.g96db324

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