From 5e4c97d035a92302f8bce9cec29676306af560a6 Mon Sep 17 00:00:00 2001 From: Stefan Chulski Date: Tue, 25 Jun 2019 15:41:47 +0300 Subject: plat: marvell: ap807: implement workaround for errata-id 3033912 ERRATA ID: RES-3033912 - Internal Address Space Init state causes a hang upon accesses to [0xf070_0000, 0xf07f_ffff] Workaround: Boot Firmware (ATF) should configure CCU_RGF_WIN(4) to split [0x6e_0000, 0xff_ffff] to values [0x6e_0000, 0x6f_ffff] and [0x80_0000, 0xff_ffff] that cause accesses to the segment of [0xf070_0000, 0xf07f_ffff] to act as RAZWI. Reuse common work-around code for both AP806 and AP807. Change-Id: Ia91a4802d02917d1682faa0c81571093d1687d97 Signed-off-by: Stefan Chulski --- drivers/marvell/ccu.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'drivers/marvell/ccu.c') diff --git a/drivers/marvell/ccu.c b/drivers/marvell/ccu.c index c73516eae..ecf5091b4 100644 --- a/drivers/marvell/ccu.c +++ b/drivers/marvell/ccu.c @@ -30,6 +30,9 @@ ((tgt) == DRAM_1_TID) || \ ((tgt) == RAR_TID)) ? 1 : 0) +#define CCU_RGF(win) (MVEBU_CCU_BASE(MVEBU_AP0) + \ + 0x90 + 4 * (win)) + /* For storage of CR, SCR, ALR, AHR abd GCR */ static uint32_t ccu_regs_save[MVEBU_CCU_MAX_WINS * 4 + 1]; @@ -366,3 +369,17 @@ int init_ccu(int ap_index) return 0; } + +void errata_wa_init(void) +{ + /* + * EERATA ID: RES-3033912 - Internal Address Space Init state causes + * a hang upon accesses to [0xf070_0000, 0xf07f_ffff] + * Workaround: Boot Firmware (ATF) should configure CCU_RGF_WIN(4) to + * split [0x6e_0000, 0xff_ffff] to values [0x6e_0000, 0x6f_ffff] and + * [0x80_0000, 0xff_ffff] that cause accesses to the + * segment of [0xf070_0000, 0xf07f_ffff] to act as RAZWI. + */ + mmio_write_32(CCU_RGF(4), 0x37f9b809); + mmio_write_32(CCU_RGF(5), 0x7ffa0009); +} -- cgit v1.2.3