From: Peng Fan peng.fan@nxp.com
Add TRDC release request, then we could configure resources to be accessible by A35 Domain.
Signed-off-by: Peng Fan peng.fan@nxp.com --- arch/arm/mach-imx/imx8ulp/soc.c | 26 +++++++++++++++++--------- 1 file changed, 17 insertions(+), 9 deletions(-)
diff --git a/arch/arm/mach-imx/imx8ulp/soc.c b/arch/arm/mach-imx/imx8ulp/soc.c index 62c02a6223..43fe62c2fd 100644 --- a/arch/arm/mach-imx/imx8ulp/soc.c +++ b/arch/arm/mach-imx/imx8ulp/soc.c @@ -344,17 +344,23 @@ static void set_core0_reset_vector(u32 entry) setbits_le32(SIM1_BASE_ADDR + 0x8, (0x1 << 26)); }
-static int release_xrdc(void) +enum rdc_type { + RDC_TRDC, + RDC_XRDC, +}; + +static int release_rdc(enum rdc_type type) { ulong s_mu_base = 0x27020000UL; struct imx8ulp_s400_msg msg; int ret; + u32 rdc_id = (type == RDC_XRDC) ? 0x78 : 0x74;
msg.version = AHAB_VERSION; msg.tag = AHAB_CMD_TAG; msg.size = 2; msg.command = AHAB_RELEASE_RDC_REQ_CID; - msg.data[0] = (0x78 << 8) | 0x2; /* A35 XRDC */ + msg.data[0] = (rdc_id << 8) | 0x2; /* A35 XRDC */
mu_hal_init(s_mu_base); mu_hal_sendmsg(s_mu_base, 0, *((u32 *)&msg)); @@ -363,13 +369,12 @@ static int release_xrdc(void) ret = mu_hal_receivemsg(s_mu_base, 0, (u32 *)&msg); if (!ret) { ret = mu_hal_receivemsg(s_mu_base, 1, &msg.data[0]); - if (!ret) - return ret; + if (!ret) { + if ((msg.data[0] & 0xff) == 0xd6) + return 0; + }
- if ((msg.data[0] & 0xff) == 0) - return 0; - else - return -EIO; + return -EIO; }
return ret; @@ -423,8 +428,11 @@ int arch_cpu_init(void) /* Disable wdog */ init_wdog();
+ if (get_boot_mode() == SINGLE_BOOT) + release_rdc(RDC_TRDC); + /* release xrdc, then allow A35 to write SRAM2 */ - release_xrdc(); + release_rdc(RDC_XRDC); xrdc_mrc_region_set_access(2, CONFIG_SPL_TEXT_BASE, 0xE00);
clock_init();