From: Siva Durga Prasad Paladugu <siva.durga.palad...@xilinx.com>
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 <siva...@xilinx.com>
Signed-off-by: Michal Simek <michal.si...@xilinx.com>
---
arch/arm/cpu/armv8/zynqmp/Kconfig | 7 +++++++
arch/arm/cpu/armv8/zynqmp/cpu.c | 12 ++++++++++++
arch/arm/include/asm/arch-zynqmp/hardware.h | 3 +++
3 files changed, 22 insertions(+)
diff --git a/arch/arm/cpu/armv8/zynqmp/Kconfig
b/arch/arm/cpu/armv8/zynqmp/Kconfig
index 5ffc9f6c867b..4dc8b1caf79e 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 9b83e51885fa..f026cb4511f0 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;
diff --git a/arch/arm/include/asm/arch-zynqmp/hardware.h
b/arch/arm/include/asm/arch-zynqmp/hardware.h
index cab29ba03691..5f2c98d633e3 100644
--- a/arch/arm/include/asm/arch-zynqmp/hardware.h
+++ b/arch/arm/include/asm/arch-zynqmp/hardware.h
@@ -21,6 +21,9 @@
#define ZYNQMP_USB0_XHCI_BASEADDR 0xFE200000
#define ZYNQMP_USB1_XHCI_BASEADDR 0xFE300000
+#define ZYNQMP_TCM_BASE_ADDR 0xFFE00000
+#define ZYNQMP_TCM_SIZE 0x40000
+
#define ZYNQMP_CRL_APB_BASEADDR 0xFF5E0000
#define ZYNQMP_CRL_APB_TIMESTAMP_REF_CTRL_CLKACT 0x1000000
#define ZYNQMP_CRL_APB_BOOT_PIN_CTRL_OUT_EN_SHIFT 0
--
1.9.1
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