[U-Boot] [PATCH ] board: ls2080a: Add "mcinitcmd" env for MC & DPL deployment

[Pratiyush Mohan Srivastava]

From: Pratiyush Mohan Srivastava <pratiyush.srivastava at nxp.com>

Environment variable mcinitcmd is defined to initiate MC and DPL deployment
from the location where it is stored(NOR, NAND, SD, SATA, USB)during u-boot
booting.If this variable is not defined then macro MC_BOOT_ENV_VAR will be null and
MC will not be booted and DPL will not be applied during U-boot booting.

Signed-off-by: Pratiyush Mohan Srivastava <pratiyush.srivastava at nxp.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha at nxp.com>
---
 arch/arm/cpu/armv8/fsl-layerscape/README.lsch3 | 29 ++++++++++++++++++++++++++
 board/freescale/ls2080aqds/eth.c               |  5 +++++
 board/freescale/ls2080ardb/eth_ls2080rdb.c     |  5 +++++
 3 files changed, 39 insertions(+)

diff --git a/arch/arm/cpu/armv8/fsl-layerscape/README.lsch3 b/arch/arm/cpu/armv8/fsl-layerscape/README.lsch3
index f9323c1..da5e052 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/README.lsch3
+++ b/arch/arm/cpu/armv8/fsl-layerscape/README.lsch3
@@ -121,6 +121,35 @@ mcboottimeout:	MC boot timeout in milliseconds. If this variable is not defined
 mcmemsize:	MC DRAM block size. If this variable is not defined, the value
 		CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE will be assumed.
 
+mcinitcmd:	This environment variable is defined to initiate MC and DPL deployment
+		from the location where it is stored(NOR, NAND, SD, SATA, USB)during
+		u-boot booting.If this variable is not defined then MC_BOOT_ENV_VAR
+		will be null and MC will not be booted and DPL will not be applied
+		during U-boot booting.However the MC, DPC and DPL can be applied from
+		console independently.
+		The variable needs to be set from the console once and then on
+		rebooting the parameters set in the varible will automatically be
+		executed. The commmand is demostrated taking an example of mc boot
+		using NOR Flash i.e. MC, DPL, and DPC is stored in the NOR flash:
+
+		cp.b 0xa0000000 0x580300000 $filesize
+		cp.b 0x80000000 0x580800000 $filesize
+		cp.b 0x90000000 0x580700000 $filesize
+
+		setenv mcinitcmd 'fsl_mc start mc 0x580300000 0x580800000'
+
+		If only linux is to be booted then the mcinitcmd environment should be set as
+
+		setenv mcinitcmd 'fsl_mc start mc 0x580300000 0x580800000;fsl_mc apply DPL 0x580700000'
+
+		Here the addresses 0xa0000000, 0x80000000, 0x80000000 are of DDR to where
+		MC binary, DPC binary and DPL binary are stored and 0x580300000, 0x580800000
+		and 0x580700000 are addresses in NOR where these are copied. It is to be
+		noted that these addresses in 'fsl_mc start mc 0x580300000 0x580800000;fsl_mc apply DPL 0x580700000'
+		can be replaced with the addresses of DDR to
+		which these will be copied in case of these binaries being stored in other
+		devices like SATA, USB, NAND, SD etc.
+
 Booting from NAND
 -------------------
 Booting from NAND requires two images, RCW and u-boot-with-spl.bin.
diff --git a/board/freescale/ls2080aqds/eth.c b/board/freescale/ls2080aqds/eth.c
index 5b9c2d1..db9de77 100644
--- a/board/freescale/ls2080aqds/eth.c
+++ b/board/freescale/ls2080aqds/eth.c
@@ -20,6 +20,7 @@
 
 #include "ls2080aqds_qixis.h"
 
+#define MC_BOOT_ENV_VAR "mcinitcmd"
 
 #ifdef CONFIG_FSL_MC_ENET
  /* - In LS2080A there are only 16 SERDES lanes, spread across 2 SERDES banks.
@@ -714,6 +715,7 @@ void ls2080a_handle_phy_interface_xsgmii(int i)
 int board_eth_init(bd_t *bis)
 {
 	int error;
+	char *mc_boot_env_var;
 #ifdef CONFIG_FSL_MC_ENET
 	struct ccsr_gur __iomem *gur = (void *)CONFIG_SYS_FSL_GUTS_ADDR;
 	int serdes1_prtcl = (in_le32(&gur->rcwsr[28]) &
@@ -781,6 +783,9 @@ int board_eth_init(bd_t *bis)
 		}
 	}
 
+	mc_boot_env_var = getenv(MC_BOOT_ENV_VAR);
+	if (mc_boot_env_var)
+		run_command_list(mc_boot_env_var, -1, 0);
 	error = cpu_eth_init(bis);
 
 	if (hwconfig_f("xqsgmii", env_hwconfig)) {
diff --git a/board/freescale/ls2080ardb/eth_ls2080rdb.c b/board/freescale/ls2080ardb/eth_ls2080rdb.c
index 58ea746..758bb3d 100644
--- a/board/freescale/ls2080ardb/eth_ls2080rdb.c
+++ b/board/freescale/ls2080ardb/eth_ls2080rdb.c
@@ -20,9 +20,11 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#define MC_BOOT_ENV_VAR "mcinitcmd"
 int board_eth_init(bd_t *bis)
 {
 #if defined(CONFIG_FSL_MC_ENET)
+	char *mc_boot_env_var;
 	int i, interface;
 	struct memac_mdio_info mdio_info;
 	struct mii_dev *dev;
@@ -89,6 +91,9 @@ int board_eth_init(bd_t *bis)
 		}
 	}
 
+	mc_boot_env_var = getenv(MC_BOOT_ENV_VAR);
+	if (mc_boot_env_var)
+		run_command_list(mc_boot_env_var, -1, 0);
 	cpu_eth_init(bis);
 #endif /* CONFIG_FMAN_ENET */
 
-- 
1.9.1