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MLK-20026 caam: Fix CAAM RNG init hang on imx8mq RevA 

Found the imx8mq Rev A chip (B0 and B1 chips are ok) boot hang at CAAM RNG init.
The jobring 0 can't complete instantiation descriptor and spins on checking ORSFR_JR0.

In current implementation, the descriptor and jobring input and output base address locate
on TCM, because the driver uses raw_data array in jr_data_st structure as the buffer.
This seems cause the issue. If switched from TCM to OCRAM, the issue will go.

Since accessing TCM by CAAM is not very reliable. Add this patch to use OCRAM for SPL case.
The early malloc is ready on SPL before calling board_init_f. So we can use malloc to allocate
memory instead of the raw_data array.

Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Ye Li 2018-10-22 00:45:09 -07:00
parent 7b800eb12b
commit b12e170792
1 changed files with 11 additions and 4 deletions
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15
drivers/crypto/fsl_caam.c
View File

@ -602,15 +602,22 @@ static int do_cfg_jrqueue(void)
g_jrdata.status = RING_RELOC_INIT; g_jrdata.status = RING_RELOC_INIT;
} else { } else {
u32 align_idx = 0; u32 align_idx = 0;
u32 *addr;
#if defined(CONFIG_SPL_BUILD) && CONFIG_VAL(SYS_MALLOC_F_LEN)
ulong maddr = (ulong)malloc(DESC_MAX_SIZE * 2 + 8);
addr = (u32*)ALIGN(maddr, 8);
#else
addr = g_jrdata.raw_addr;
#endif
/* Ensure 64bits buffers addresses alignment */ /* Ensure 64bits buffers addresses alignment */
if ((uintptr_t)g_jrdata.raw_addr & 0x7) if ((uintptr_t)addr & 0x7)
align_idx = 1; align_idx = 1;
g_jrdata.inrings = (struct inring_entry *) g_jrdata.inrings = (struct inring_entry *)
(&g_jrdata.raw_addr[align_idx]); (&addr[align_idx]);
g_jrdata.outrings = (struct outring_entry *) g_jrdata.outrings = (struct outring_entry *)
(&g_jrdata.raw_addr[align_idx + 2]); (&addr[align_idx + 2]);
g_jrdata.desc = (u32 *)(&g_jrdata.raw_addr[align_idx + 4]); g_jrdata.desc = (u32 *)(&addr[align_idx + 4]);
g_jrdata.status = RING_EARLY_INIT; g_jrdata.status = RING_EARLY_INIT;
} }