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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2017-01-24 08:42:35 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2017-02-06 16:13:10 +0100 |
| commit | 1dfe9f050f54c7e9d6cfe971aff354ff531e5d91 (patch) | |
| tree | e7f44f7e6726ac0ba4e627f92d9c1b817a4a676f /arch/arm | |
| parent | 55eed47d8515e5fdaf869c2a26f495d74d30f224 (diff) | |
| download | barebox-1dfe9f050f54c7e9d6cfe971aff354ff531e5d91.tar.gz barebox-1dfe9f050f54c7e9d6cfe971aff354ff531e5d91.tar.xz | |
ARM: i.MX7: Initialize CSU
The CSU needs to be initialized, otherwise we cannot access memory
in non secure mode.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-imx/imx7.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/imx7.c b/arch/arm/mach-imx/imx7.c index 65e02d6268..96a9dd244d 100644 --- a/arch/arm/mach-imx/imx7.c +++ b/arch/arm/mach-imx/imx7.c @@ -79,6 +79,18 @@ static int imx7_timer_init(void) return 0; } +#define CSU_NUM_REGS 64 +#define CSU_INIT_SEC_LEVEL0 0x00FF00FF + +static void imx7_init_csu(void) +{ + void __iomem *csu = IOMEM(MX7_CSU_BASE_ADDR); + int i = 0; + + for (i = 0; i < CSU_NUM_REGS; i++) + writel(CSU_INIT_SEC_LEVEL0, csu + i * 4); +} + int imx7_init(void) { const char *cputypestr; @@ -86,6 +98,8 @@ int imx7_init(void) imx7_init_lowlevel(); + imx7_init_csu(); + imx7_timer_init(); imx7_boot_save_loc(); |