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board: stm32mp1: adapt MTD partition for BOOT from NOR or NAND

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Dynamically adapt the MTD partitions in NAND and SPI-NAND when boot from
NOR or NAND/SPI-NAND is detected.

This patch avoids to define the save MTD partition name for NOR and NAND
devices and issue with latest kernel: only the needed MTD partitions
are defined.

For boot from NOR
1/ bootloader (TF-A, U-Boot and OP-TE) in NOR
2/ one large UBI partition in NAND

For boot from NAND
1/ bootloader (TF-A, U-Boot and OP-TE) in MTD raw partition
2/ one large UBI partition

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
This commit is contained in:
Patrick Delaunay 2020-03-18 09:22:53 +01:00
parent b664a74537
commit 23229d0309
1 changed files with 60 additions and 21 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

81
board/st/common/stm32mp_mtdparts.c
View file

@ -10,6 +10,7 @@
#include <mtd.h> #include <mtd.h>
#include <mtd_node.h> #include <mtd_node.h>
#include <tee.h> #include <tee.h>
#include <asm/arch/sys_proto.h>
#define MTDPARTS_LEN 256 #define MTDPARTS_LEN 256
#define MTDIDS_LEN 128 #define MTDIDS_LEN 128
@ -22,7 +23,7 @@ DECLARE_GLOBAL_DATA_PTR;
/** /**
* update the variables "mtdids" and "mtdparts" with boot, tee and user strings * update the variables "mtdids" and "mtdparts" with boot, tee and user strings
*/ */
static void board_get_mtdparts(const char *dev, static void board_set_mtdparts(const char *dev,
char *mtdids, char *mtdids,
char *mtdparts, char *mtdparts,
const char *boot, const char *boot,
@ -65,7 +66,7 @@ void board_mtdparts_default(const char **mtdids, const char **mtdparts)
static char parts[3 * MTDPARTS_LEN + 1]; static char parts[3 * MTDPARTS_LEN + 1];
static char ids[MTDIDS_LEN + 1]; static char ids[MTDIDS_LEN + 1];
static bool mtd_initialized; static bool mtd_initialized;
bool tee = false; bool tee, nor, nand, spinand;
if (mtd_initialized) { if (mtd_initialized) {
*mtdids = ids; *mtdids = ids;
@ -73,6 +74,28 @@ void board_mtdparts_default(const char **mtdids, const char **mtdparts)
return; return;
} }
tee = false;
nor = false;
nand = false;
spinand = false;
switch (get_bootmode() & TAMP_BOOT_DEVICE_MASK) {
case BOOT_SERIAL_UART:
case BOOT_SERIAL_USB:
break;
case BOOT_FLASH_NAND:
nand = true;
break;
case BOOT_FLASH_SPINAND:
spinand = true;
break;
case BOOT_FLASH_NOR:
nor = true;
break;
default:
break;
}
if (CONFIG_IS_ENABLED(OPTEE) && if (CONFIG_IS_ENABLED(OPTEE) &&
tee_find_device(NULL, NULL, NULL, NULL)) tee_find_device(NULL, NULL, NULL, NULL))
tee = true; tee = true;
@ -87,29 +110,45 @@ void board_mtdparts_default(const char **mtdids, const char **mtdparts)
pr_debug("mtd device = %s\n", dev->name); pr_debug("mtd device = %s\n", dev->name);
} }
mtd = get_mtd_device_nm("nand0"); if (nor || nand) {
if (!IS_ERR_OR_NULL(mtd)) { mtd = get_mtd_device_nm("nand0");
board_get_mtdparts("nand0", ids, parts, if (!IS_ERR_OR_NULL(mtd)) {
CONFIG_MTDPARTS_NAND0_BOOT, const char *mtd_boot = CONFIG_MTDPARTS_NAND0_BOOT;
tee ? CONFIG_MTDPARTS_NAND0_TEE : NULL, const char *mtd_tee = CONFIG_MTDPARTS_NAND0_TEE;
"-(UBI)");
put_mtd_device(mtd); board_set_mtdparts("nand0", ids, parts,
!nor ? mtd_boot : NULL,
!nor && tee ? mtd_tee : NULL,
"-(UBI)");
put_mtd_device(mtd);
}
} }
mtd = get_mtd_device_nm("spi-nand0"); if (nor || spinand) {
if (!IS_ERR_OR_NULL(mtd)) { mtd = get_mtd_device_nm("spi-nand0");
board_get_mtdparts("spi-nand0", ids, parts, if (!IS_ERR_OR_NULL(mtd)) {
CONFIG_MTDPARTS_SPINAND0_BOOT, const char *mtd_boot = CONFIG_MTDPARTS_SPINAND0_BOOT;
tee ? CONFIG_MTDPARTS_SPINAND0_TEE : NULL, const char *mtd_tee = CONFIG_MTDPARTS_SPINAND0_TEE;
"-(UBI)");
put_mtd_device(mtd); board_set_mtdparts("spi-nand0", ids, parts,
!nor ? mtd_boot : NULL,
!nor && tee ? mtd_tee : NULL,
"-(UBI)");
put_mtd_device(mtd);
}
} }
if (!uclass_get_device(UCLASS_SPI_FLASH, 0, &dev)) if (nor) {
board_get_mtdparts("nor0", ids, parts, if (!uclass_get_device(UCLASS_SPI_FLASH, 0, &dev)) {
CONFIG_MTDPARTS_NOR0_BOOT, const char *mtd_boot = CONFIG_MTDPARTS_NOR0_BOOT;
tee ? CONFIG_MTDPARTS_NOR0_TEE : NULL, const char *mtd_tee = CONFIG_MTDPARTS_NOR0_TEE;
"-(nor_user)");
board_set_mtdparts("nor0", ids, parts,
mtd_boot,
tee ? mtd_tee : NULL,
"-(nor_user)");
}
}
mtd_initialized = true; mtd_initialized = true;
*mtdids = ids; *mtdids = ids;