diff options
| author | Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com> | 2017-07-13 19:01:11 +0530 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2017-11-28 16:08:56 +0100 |
| commit | e042d36e17358fadefe48a8ed9868f2a3e84452b (patch) | |
| tree | 8a0ae0d28bc3e98319af6158280b12fe07109993 /arch/arm/cpu | |
| parent | f322ad604e7e1418f8deb7646aa5d2b0a2bae83e (diff) | |
arm64: zynqmp: Provide a Kconfig option to use specified memory for MMU table
This patch provides a Kconfig option to use specified
memory for MMU table using reserve_mmu platform specific
routine. Here we used TCM space for MMU table.
Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'arch/arm/cpu')
| -rw-r--r-- | arch/arm/cpu/armv8/zynqmp/Kconfig | 7 | ||||
| -rw-r--r-- | arch/arm/cpu/armv8/zynqmp/cpu.c | 12 |
2 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/zynqmp/Kconfig b/arch/arm/cpu/armv8/zynqmp/Kconfig index 5ffc9f6c86..4dc8b1caf7 100644 --- a/arch/arm/cpu/armv8/zynqmp/Kconfig +++ b/arch/arm/cpu/armv8/zynqmp/Kconfig @@ -42,6 +42,13 @@ config SYS_CONFIG_NAME Based on this option include/configs/<CONFIG_SYS_CONFIG_NAME>.h header will be used for board configuration. +config SYS_MEM_RSVD_FOR_MMU + bool "Reserve memory for MMU Table" + help + If defined this option is used to setup different space for + MMU table than the one which will be allocated during + relocation. + config BOOT_INIT_FILE string "boot.bin init register filename" depends on SPL diff --git a/arch/arm/cpu/armv8/zynqmp/cpu.c b/arch/arm/cpu/armv8/zynqmp/cpu.c index 9b83e51885..f026cb4511 100644 --- a/arch/arm/cpu/armv8/zynqmp/cpu.c +++ b/arch/arm/cpu/armv8/zynqmp/cpu.c @@ -77,6 +77,18 @@ u64 get_page_table_size(void) return 0x14000; } +#ifdef CONFIG_SYS_MEM_RSVD_FOR_MMU +int reserve_mmu(void) +{ + initialize_tcm(TCM_LOCK); + memset((void *)ZYNQMP_TCM_BASE_ADDR, 0, ZYNQMP_TCM_SIZE); + gd->arch.tlb_size = PGTABLE_SIZE; + gd->arch.tlb_addr = ZYNQMP_TCM_BASE_ADDR; + + return 0; +} +#endif + static unsigned int zynqmp_get_silicon_version_secure(void) { u32 ver; |