rockchip: optimize the link mechanism for SRAM code
Add the common extra.ld.S and customized rk3399.ld.S to extend
to more features for different platforms.
For example, we can add SRAM section and specific address to
load there if we need it, and the common bl31.ld.S not need to
be modified.
Therefore, we can remove the unused codes which copying explicitly
from the function pmusram_prepare(). It looks like more clear.
Change-Id: Ibffa2da5e8e3d1d2fca80085ebb296ceb967fce8
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
diff --git a/plat/rockchip/common/pmusram/pmu_sram.c b/plat/rockchip/common/pmusram/pmu_sram.c
index bea4875..5c6a6e6 100644
--- a/plat/rockchip/common/pmusram/pmu_sram.c
+++ b/plat/rockchip/common/pmusram/pmu_sram.c
@@ -24,7 +24,10 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
+#include <console.h>
+#include <debug.h>
#include <platform.h>
+#include <plat_private.h>
/*****************************************************************************
* sram only surpport 32-bits access
@@ -36,3 +39,33 @@
for (i = 0; i < bytes; i++)
dst[i] = src[i];
}
+
+void rockchip_plat_sram_mmu_el3(void)
+{
+#ifdef PLAT_EXTRA_LD_SCRIPT
+ size_t sram_size;
+
+ /* sram.text size */
+ sram_size = (char *)&__bl31_sram_text_end -
+ (char *)&__bl31_sram_text_start;
+ mmap_add_region((unsigned long)&__bl31_sram_text_start,
+ (unsigned long)&__bl31_sram_text_start,
+ sram_size, MT_MEMORY | MT_RO | MT_SECURE);
+
+ /* sram.data size */
+ sram_size = (char *)&__bl31_sram_data_end -
+ (char *)&__bl31_sram_data_start;
+ mmap_add_region((unsigned long)&__bl31_sram_data_start,
+ (unsigned long)&__bl31_sram_data_start,
+ sram_size, MT_MEMORY | MT_RW | MT_SECURE);
+#else
+ /* TODO: Support other SoCs, Just support RK3399 now */
+ return;
+#endif
+}
+
+void plat_rockchip_mem_prepare(void)
+{
+ /* The code for resuming cpu from suspend must be excuted in pmusram */
+ plat_rockchip_pmusram_prepare();
+}