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| author | Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com> | 2018-10-05 12:39:05 +0300 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2018-10-16 17:53:24 +0300 |
| commit | 5860bc16b918bb5456a4a77930eafd7c858f70db (patch) | |
| tree | e76cec5af6ccc6548bf7b7059c6217bc328ac460 /board/xilinx | |
| parent | 12ad2994a5f01f949c3865851898bdae5ded1ddc (diff) | |
| download | u-boot-5860bc16b918bb5456a4a77930eafd7c858f70db.tar.xz | |
arm64: zynqmp: Add new command for TCM initialization
This patch adds new zynqmp command "zynqmp tcminit mode" to
initialize TCM. TCM needs to be initialized before accessing
to avoid ECC errors. This new command helps to perform
the same. It also makes tcm_init() as global and uses it for
doing the TCM initialization.
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'board/xilinx')
| -rw-r--r-- | board/xilinx/zynqmp/cmds.c | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/board/xilinx/zynqmp/cmds.c b/board/xilinx/zynqmp/cmds.c index f8c8674f87..3e039ccb13 100644 --- a/board/xilinx/zynqmp/cmds.c +++ b/board/xilinx/zynqmp/cmds.c @@ -6,6 +6,7 @@ #include <common.h> #include <malloc.h> +#include <asm/arch/hardware.h> #include <asm/arch/sys_proto.h> #include <asm/io.h> @@ -102,10 +103,36 @@ static int do_zynqmp_mmio_write(cmd_tbl_t *cmdtp, int flag, int argc, return ret; } +#ifdef CONFIG_DEFINE_TCM_OCM_MMAP +static int do_zynqmp_tcm_init(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[]) +{ + u8 mode; + + if (argc != cmdtp->maxargs) + return CMD_RET_USAGE; + + mode = simple_strtoul(argv[2], NULL, 16); + if (mode != TCM_LOCK && mode != TCM_SPLIT) { + printf("Mode should be either 0(lock)/1(split)\n"); + return CMD_RET_FAILURE; + } + + dcache_disable(); + tcm_init(mode); + dcache_enable(); + + return CMD_RET_SUCCESS; +} +#endif + static cmd_tbl_t cmd_zynqmp_sub[] = { U_BOOT_CMD_MKENT(secure, 5, 0, do_zynqmp_verify_secure, "", ""), U_BOOT_CMD_MKENT(mmio_read, 3, 0, do_zynqmp_mmio_read, "", ""), U_BOOT_CMD_MKENT(mmio_write, 5, 0, do_zynqmp_mmio_write, "", ""), +#ifdef CONFIG_DEFINE_TCM_OCM_MMAP + U_BOOT_CMD_MKENT(tcminit, 3, 0, do_zynqmp_tcm_init, "", ""), +#endif }; /** @@ -145,7 +172,15 @@ static char zynqmp_help_text[] = " be used for decryption\n" "zynqmp mmio_read address - read from address\n" "zynqmp mmio_write address mask value - write value after masking to\n" - " address\n"; + " address\n" +#ifdef CONFIG_DEFINE_TCM_OCM_MMAP + "zynqmp tcminit mode - Initialize the TCM with zeros. TCM needs to be\n" + " initialized before accessing to avoid ECC\n" + " errors. mode specifies in which mode TCM has\n" + " to be initialized. Supported modes will be\n" + " lock(0)/split(1)\n" +#endif + ; #endif U_BOOT_CMD( |