From 65375d026a59a79ff2cabf6b4ee26752b8e3b5e3 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Pali=20Roh=C3=A1r?= Date: Wed, 16 Feb 2022 11:18:44 +0100 Subject: [PATCH] arm: mvebu: a37xx: Map CCI-400 and AP BootROM address space MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit In function build_mem_map() prepare also mapping for CCI-400 and BootROM windows. BootROM window is 1 MB long and by default starts at address 0xfff00000. A53 AP BootROM is 16 kB long and repeats in this BootROM window 64 times. RVBAR_EL3 register is set to value 0xffff0000, so by default A53 AP BootROM is accessed via range 0xffff0000-0xffff3fff. CCI-400 window when new TF-A version is used, starts at address 0xfe000000 and when old TF-A version is used, starts at address 0xd8000000. Physical addresses are read directly from mvebu registers, so if TF-A remaps it in future (again) then it would not cause any issue for U-Boot. Signed-off-by: Pali Rohár Reviewed-by: Stefan Roese --- arch/arm/mach-mvebu/armada3700/cpu.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-mvebu/armada3700/cpu.c b/arch/arm/mach-mvebu/armada3700/cpu.c index 57a811b..e9bdc18 100644 --- a/arch/arm/mach-mvebu/armada3700/cpu.c +++ b/arch/arm/mach-mvebu/armada3700/cpu.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -46,8 +47,10 @@ #define MVEBU_CPU_DEC_WIN_REMAP(w) (MVEBU_CPU_DEC_WIN_CTRL(w) + 0xc) #define MVEBU_CPU_DEC_WIN_GRANULARITY 16 #define MVEBU_CPU_DEC_WINS 5 +#define MVEBU_CPU_DEC_CCI_BASE (MVEBU_CPU_DEC_WIN_REG_BASE + 0xe0) +#define MVEBU_CPU_DEC_ROM_BASE (MVEBU_CPU_DEC_WIN_REG_BASE + 0xf4) -#define MAX_MEM_MAP_REGIONS (MVEBU_CPU_DEC_WINS + 2) +#define MAX_MEM_MAP_REGIONS (MVEBU_CPU_DEC_WINS + 4) #define A3700_PTE_BLOCK_NORMAL \ (PTE_BLOCK_MEMTYPE(MT_NORMAL) | PTE_BLOCK_INNER_SHARE) @@ -110,8 +113,26 @@ static int get_cpu_dec_win(int win, u32 *tgt, u32 *base, u32 *size) static void build_mem_map(void) { int win, region; + u32 reg; region = 1; + + /* CCI-400 */ + reg = readl(MVEBU_CPU_DEC_CCI_BASE); + mvebu_mem_map[region].phys = reg << 20; + mvebu_mem_map[region].virt = reg << 20; + mvebu_mem_map[region].size = SZ_64K; + mvebu_mem_map[region].attrs = A3700_PTE_BLOCK_DEVICE; + ++region; + + /* AP BootROM */ + reg = readl(MVEBU_CPU_DEC_ROM_BASE); + mvebu_mem_map[region].phys = reg << 20; + mvebu_mem_map[region].virt = reg << 20; + mvebu_mem_map[region].size = SZ_1M; + mvebu_mem_map[region].attrs = A3700_PTE_BLOCK_NORMAL; + ++region; + for (win = 0; win < MVEBU_CPU_DEC_WINS; ++win) { u32 base, tgt, size; u64 attrs; -- 2.7.4