From: Marek Vasut Date: Thu, 18 Oct 2018 16:38:05 +0000 (+0200) Subject: ARM: renesas: Save boot parameters passed in by ATF X-Git-Tag: v2019.07-rc1~33^2~19 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=4fa8375ffec5bd1c7edabde42b8ee0339072df38;p=oweals%2Fu-boot.git ARM: renesas: Save boot parameters passed in by ATF The ATF can pass additional information via the first four registers, x0...x3. The R-Car Gen3 with mainline ATF, register x1 contains pointer to a device tree with platform information. Save these registers for future use. Signed-off-by: Marek Vasut Cc: Nobuhiro Iwamatsu --- diff --git a/arch/arm/mach-rmobile/lowlevel_init_gen3.S b/arch/arm/mach-rmobile/lowlevel_init_gen3.S index f42b53fd88..213ec143e2 100644 --- a/arch/arm/mach-rmobile/lowlevel_init_gen3.S +++ b/arch/arm/mach-rmobile/lowlevel_init_gen3.S @@ -16,6 +16,21 @@ #include #include +.align 8 +.globl rcar_atf_boot_args +rcar_atf_boot_args: + .dword 0 + .dword 0 + .dword 0 + .dword 0 + +ENTRY(save_boot_params) + adr x8, rcar_atf_boot_args + stp x0, x1, [x8], #16 + stp x2, x3, [x8], #16 + b save_boot_params_ret +ENDPROC(save_boot_params) + ENTRY(lowlevel_init) mov x29, lr /* Save LR */