From e042d36e17358fadefe48a8ed9868f2a3e84452b Mon Sep 17 00:00:00 2001 From: Siva Durga Prasad Paladugu Date: Thu, 13 Jul 2017 19:01:11 +0530 Subject: 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 Signed-off-by: Michal Simek --- arch/arm/cpu/armv8/zynqmp/Kconfig | 7 +++++++ arch/arm/cpu/armv8/zynqmp/cpu.c | 12 ++++++++++++ 2 files changed, 19 insertions(+) (limited to 'arch/arm/cpu') 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/.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; -- cgit