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rockchip: rk3576: Allow pmu sram access for non-secure masters

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The firewall block access to pmu sram for non-secure masters by default
after reset (0xffffbfff).

Change the pmu lookup configuration to match the default lookup config
for ddr and system sram (0xffff3fff) to allow loading TF-A using DMA.

Mainline TF-A will re-configure the firewall to use an even less
restrictive lookup (0xbffe3ff0), so this change is not expected to have
any real security implication.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Tested-by: Alexey Charkov <alchark@gmail.com> # UFS
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
This commit is contained in:
Jonas Karlman 2026-01-08 13:32:29 +00:00 committed by Tom Rini
parent 492e00e27c
commit c501d83742
1 changed files with 6 additions and 0 deletions
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6
arch/arm/mach-rockchip/rk3576/rk3576.c
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@ -26,6 +26,9 @@
#define SYS_SGRF_SOC_CON15 0x005C
#define SYS_SGRF_SOC_CON20 0x0070
#define FW_PMU1SGRF_BASE 0x26003000
#define PMU1SGRF_SLV_LOOKUP0 0x80
#define FW_SYS_SGRF_BASE 0x26005000
#define SGRF_DOMAIN_CON1 0x4
#define SGRF_DOMAIN_CON2 0x8
@ -140,6 +143,9 @@ int arch_cpu_init(void)
if (!IS_ENABLED(CONFIG_SPL_BUILD))
return 0;
/* Allow pmu sram access for non-secure masters */
writel(0xffff3fff, FW_PMU1SGRF_BASE + PMU1SGRF_SLV_LOOKUP0);
/* Set the emmc to access ddr memory */
val = readl(FW_SYS_SGRF_BASE + SGRF_DOMAIN_CON2);
writel(val | 0x7, FW_SYS_SGRF_BASE + SGRF_DOMAIN_CON2);