diff options
| author | Eugeniy Paltsev | 2020-03-23 21:50:03 +0300 |
|---|---|---|
| committer | Alexey Brodkin | 2020-04-27 11:20:27 +0300 |
| commit | 6917a9dbaf7776f52930052dfcf9e582f80dac66 (patch) | |
| tree | e7306c5d674872eafcfb3640e886ba3cbe311454 /board/synopsys | |
| parent | 1d897d1a2231340ba676157edac039f52f06000f (diff) | |
ARC: HSDK-4xD: add CSM configuration support
Add support for CSM enable/disable and CSM relocation via
hsdk_init command. We allow to relocate CSM to the beginning of
any aperture even if HW support finer granularity.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Diffstat (limited to 'board/synopsys')
| -rw-r--r-- | board/synopsys/hsdk/hsdk.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/board/synopsys/hsdk/hsdk.c b/board/synopsys/hsdk/hsdk.c index b25b1331874..2cbb59d8092 100644 --- a/board/synopsys/hsdk/hsdk.c +++ b/board/synopsys/hsdk/hsdk.c @@ -80,6 +80,7 @@ struct hsdk_env_common_ctl { u32_env nvlim; u32_env icache; u32_env dcache; + u32_env csm_location; u32_env l2_cache; }; @@ -132,6 +133,7 @@ static const struct env_map_common env_map_common[] = { { "dcache_ena", ENV_HEX, true, 0, 1, &env_common.dcache }, #if defined(CONFIG_BOARD_HSDK_4XD) { "l2_cache_ena", ENV_HEX, true, 0, 1, &env_common.l2_cache }, + { "csm_location", ENV_HEX, true, 0, NO_CCM, &env_common.csm_location }, #endif /* CONFIG_BOARD_HSDK_4XD */ {} }; @@ -299,6 +301,30 @@ static void init_cluster_slc(void) slc_disable(); } +#define CREG_CSM_BASE (CREG_BASE + 0x210) + +static void init_cluster_csm(void) +{ + /* ARC HS38 in HSDK SoC doesn't include CSM */ + if (!is_board_match_config(T_BOARD_HSDK_4XD)) + return; + + if (env_common.csm_location.val == NO_CCM) { + write_aux_reg(ARC_AUX_CSM_ENABLE, 0); + } else { + /* + * CSM base address is 256kByte aligned but we allow to map + * CSM only to aperture start (256MByte aligned) + * The field in CREG_CSM_BASE is in 17:2 bits itself so we need + * to shift it. + */ + u32 csm_base = (env_common.csm_location.val * SZ_1K) << 2; + + write_aux_reg(ARC_AUX_CSM_ENABLE, 1); + writel(csm_base, (void __iomem *)CREG_CSM_BASE); + } +} + static void init_master_icache(void) { if (icache_status()) { @@ -678,6 +704,7 @@ static void do_init_cluster(void) * cores. */ init_cluster_nvlim(); + init_cluster_csm(); init_cluster_slc(); } |